LASIK, LASEK, or SMILE LASIK, Which One Is the Best?BGN Eye Clinic Jamsil Lotte World TowerHello, this is BGN Eye Clinic Jamsil Lotte World Tower.One of the questions we hear most often in the consultation room is:"Which is better — LASIK, LASEK, or SMILE LASIK?""I heard LASIK is the best?""Someone told me SMILE LASIK is the only way to go!"We hear this from so many patients, especially those who have been reading post-surgery reviews on social media and blogs before coming in.As you may already know, a quick search online turns up countless phrases like 'SMILE LASIK has a faster recovery,' 'LASEK is painful,' and 'LASIK is the safe standard choice.' Many patients arrive having searched keywords like "SMILE LASIK review," which is why there's such a strong desire to compare the procedures and find out which one comes out on top.Today, for everyone curious about which surgery is the best, we'd like to walk through the characteristics of LASIK, LASEK, and SMILE LASIK alongside the questions we hear most often in our consultations!LASIK, LASEK, and SMILE LASIK… Here Are the DifferencesRather than saying one surgery is better or worse than another, we explain that each one is simply different. In reality, the three procedures differ slightly in method and characteristics — so it's not really a matter of ranking them! When explaining, rather than listing medical terms, we like to use analogies that patients can immediately relate to. Let us walk you through those analogies today!LASEK: "Like scraping the skin after a fall"LASEK involves removing the outer surface of the cornea, so it does require more time to recover. There may be some discomfort for a few days, but a key advantage is that it can also be performed on patients with thinner corneas.LASIK: "Like lifting a flap and reshaping underneath"Because surgery is performed by creating a corneal flap, many patients find that recovery is relatively quick and comfortable. However, patients with particularly thin corneas may not be suitable candidates.SMILE LASIK: "Defined by a micro-incision"Rather than creating a corneal flap, SMILE LASIK uses a small micro-incision. Because of this, many patients report that recovery is faster and returning to daily life is easier compared to other procedures. It is also the surgery that has been attracting the most patient interest recently.Patients often tell us that explanations like these make the concepts click much more easily. Some say they feel better equipped to decide which surgery suits them once they understand the differences this way. There is nothing more rewarding than seeing that "Ah, now I get it!" look on a patient's face during a consultation!Which Surgery Is Better? The One That Fits Your Eyes!Many patients walk into the consultation room and ask, "Is LASIK better, or SMILE LASIK?" But what we always emphasize is that the focus should not be on "which surgery is superior," but rather on "which surgery is right for my eyes."If your corneas are thin, we would recommend LASEK or SMILE LASIK over LASIK.If you already experience significant discomfort such as dry eye syndrome, we would recommend SMILE LASIK.If cost is a consideration, we would explain LASEK and LASIK first before discussing SMILE LASIK.Even people of the same age with similar lifestyles can have very different eye conditions and habits! That's why vision correction surgery is never about comparing procedures to find a winner — please never forget that the best choice is the one that fits you and your lifestyle.If You're Considering Vision Correction Surgery, Keep These in Mind Too!Before your hospital consultation, it can be helpful to create your own checklist and think through which procedure might suit you.Pre-Surgery ChecklistHow many hours a day do you wear contact lenses?What are your lifestyle habits like — late nights, drinking, smoking?Do you have enough time to rest properly during the recovery period?Do you have any important upcoming events such as exams, job interviews, or military enlistment?Going through questions like these will naturally help you think "Now isn't the right time" or "I can manage this well enough." Many patients who take the time to do this say they end up choosing a procedure that feels more right for them — and feel much more confident in their decision.Don't Forget These Small Everyday TipsPlease also keep in mind the rules to follow before and after surgery.Stop wearing contact lenses for at least 1 week before surgery to ensure accurate examination results. This is essential!Avoid heavy drinking the night before surgery — it can affect the recovery process.Wearing protective eyewear helps shield your sensitive eyes right after surgery and throughout your recovery.Use artificial tears regularly! They make a big difference for patients who experience dryness after surgery.Reduce screen time — in the early stages of recovery, please minimize smartphone and computer use as much as possible. Eye recovery comes first!These small habits, taken together, add up to a safer and more comfortable recovery. LASIK, LASEK, and SMILE LASIK are not procedures that can be ranked against one another. Each simply has its own distinct characteristics. What matters is how well each one fits your eyes and your lifestyle.We encourage you to consider not just online reviews, but your own eye condition and lifestyle habits as your primary guide.We also see the consultation itself not simply as a session to determine "whether surgery is possible or not," but as a process of reviewing every aspect of your situation together, so that you and your family can feel completely at ease."Doctor, so which surgery should I have? Which one is the best? Please just tell me what to do!"Many patients ask us exactly this. And every time, our answer is: "There isn't a universally better surgery — there is only the surgery that is right for you." Now you know why.BGN Eye Clinic Jamsil Lotte World Tower will always be by your side, thinking carefully alongside you to help you find the surgery you'll truly be satisfied with!Your precious eyes — BGN will protect them.

LASIK Surgery and Exercise: When Is It Safe to Start? A Complete GuideBGN Eye Clinic Jamsil Lotte World TowerHello, this is BGN Eye Clinic Jamsil Lotte World Tower.Do you exercise regularly? Many of you probably go to the gym, go for a jog after work, or do Pilates on weekends. In the clinic, I often hear patients say, "I think my day would feel empty without exercise."So there's one question that always comes up during consultations: "Doctor, when can I start exercising again after LASIK surgery?"Exercise is an important habit — both for your health and for managing stress — so it's natural to feel anxious about having to pause it due to surgery.Today, we're addressing exactly that! When is it safe to start exercising after LASIK surgery? Let's go through when each type of exercise is appropriate and what precautions to take.Light Walking — OK from the Day After SurgeryThe first form of exercise you can resume after LASIK surgery is walking. It requires no special equipment, places no significant strain on the body, and is the best activity to support the recovery process.Many patients who come in for their follow-up the day after surgery say things like: "Everything was blurry until yesterday, but walking here today felt completely different." The feeling of walking with newly sharp vision is unlike anything else — a truly special moment.That said, the key word here is 'light' walking. Sudden long-distance walks or routes with steep inclines like hiking can cause excessive sweating and physical exertion, which may strain your eyes. At first, it's best to stick to flat, safe paths like a nearby park or your apartment complex.About 20–30 minutes in the morning or evening, when sunlight is not too strong, is more than enough to enjoy fresh air and the scenery around you. Even this level of activity promotes circulation and positively supports recovery speed.One more tip: wear sunglasses when you go for a walk. Right after surgery, the eyes are sensitive to light, so walking outdoors for long periods in bright sunlight without protection can cause glare and eye fatigue. Simply wearing sunglasses can significantly reduce glare and also protect your eyes from UV rays.To summarize:The safest exercise from the day after LASIK surgery is 'walking'Choose flat, safe surfacesLimit to about 20–30 minutes per dayAvoid peak sunlight hours and protect your eyes with sunglassesRemember: that first small walk is not only the first step in your recovery — it's also your first chance to enjoy your newly clear vision.Yoga & Light Strength Training — After 2–3 WeeksWhen walking alone starts to feel a little too easy, the next step you can try is yoga and light strength training. However, this is typically recommended starting around 2–3 weeks after surgery.This is because in the early post-operative period, the cornea is still in the process of settling and healing — and when you exert physical effort, intraocular pressure can momentarily spike.Many yoga poses involve bending the head downward or inverting the upper body (such as Downward Dog), which can place unnecessary pressure on the eyes and should be avoided. Therefore, even when doing yoga, it's safer to start with breath-focused and stretching-oriented movements.The same applies to weightlifting at the gym. During this period, light, loosening movements are recommended over heavy dumbbells or high-intensity strength training. In particular, movements that involve holding your breath while exerting force (the Valsalva maneuver) can easily raise intraocular pressure and should be avoided.One important point: use a towel or headband to prevent sweat from dripping into your eyes during exercise. Bacteria in sweat can increase the risk of infection in eyes that are still healing.Swimming & Intense Exercise — At Least 4 Weeks After SurgeryOne of the things we emphasize most to patients after LASIK surgery is that you must wait at least one month before swimming.Pool water contains disinfectants (chlorine) that can irritate the surface of the eye, and because pools are shared by many people, the risk of bacterial infection is high. If this kind of water comes into contact with eyes that have not yet fully healed, it can delay recovery or lead to complications. The same applies to seawater — its high salt content can irritate the eyes, and the wind can worsen dryness.Sports involving significant contact or projectiles — such as martial arts, soccer, basketball, and tennis — carry a risk of impact and must be approached with great caution. If a direct blow lands on the eye while the cornea is still recovering, it can affect the stability of the surgical site.We therefore generally recommend waiting until at least 4 weeks after surgery, when a follow-up exam confirms that the eye is stable, before resuming these activities. And one thing to prepare before you return to sport: protective sports goggles — essential for anyone who has had eye surgery.Key Precautions During ExerciseSweatWhen you exercise, sweat naturally runs down your face. Sweat contains salt and waste products that can cause immediate stinging and redness if it enters your healing eyes.Use a headband or cap to block sweat from running down your foreheadWhen wiping with a towel, dab gently — don't rubHold off on applying oils or eye creams around the eyes before exerciseImpactA bouncing ball, a stray elbow, or a piece of equipment — these are all hard to predict. But even small impacts can slow down recovery and interfere with the cornea settling into a stable position.For about one month, it is best to avoid ball sports (soccer, basketball, badminton, etc.), martial arts, and high-intensity workouts like CrossFit. Light walking and stretching-based movements are the safer options.Dry AirAt the gym, air conditioning blows constantly, and after a workout, sweat evaporates quickly — leaving your eyes feeling even drier than usual. Many patients are surprised and say, "Why do my eyes feel even drier when I exercise?"Keep artificial tears in your gym bagChoose a spot away from air conditioning ventsAfter your workout, hydrate your eyes with artificial tears before showeringTo sum it up: Keep sweat out, avoid impact, and prepare for dryness in advance!Real Patient StoriesNot long ago, a patient in their early 30s came back in for a follow-up during their first week after LASIK surgery. They walked in and said right away: "Doctor, my eyes are so red and dry… Did something go wrong with the surgery?"When I asked what had happened, it turned out they had gotten on a treadmill just one week after surgery and run over 5 km. They had figured, "My vision is clear now, so it should be fine," and resumed exercising.But even when the eye looks perfectly fine on the outside, it is still sensitive internally and needs time to heal. Sweat had entered the eye, triggering a temporary inflammatory response, and the resulting dryness had progressed to redness and irritation. Fortunately, no serious damage had occurred, and the patient recovered with treatment — but it was a close call.On the other hand, another patient — a woman in her 40s — made a completely different choice. She had a daily habit of jogging 3 km every morning, but after LASIK surgery, she was extremely careful and spent an entire month doing nothing but walking. Only after her follow-up confirmed that her eyes were stable did she slowly return to running. She came back smiling and said:"Before, my vision was blurry when I ran, so I always felt anxious not being able to read signs clearly. Now everything is so sharp that even when I pick up speed, I don't feel scared at all."Two stories that make one thing clear.First, even when the eye looks fine on the outside, internal recovery takes time.Second, letting go of impatience even briefly actually speeds up recovery and leads to far greater satisfaction with exercise.For those who love to exercise, the urge to "get back to it quickly" is completely understandable — but your eyes are precious organs you rely on for life. Please keep in mind that a few short weeks of waiting can protect your eye health for a lifetime.Tips from Your Eye Care SpecialistLight Walking → Possible from the Day After Surgery. Walking is the safest activity even right after surgery. Keep it to 20–30 minutes on flat paths near your home. If the sun is strong, sunglasses are a must.Yoga & Light Weights → From 2–3 Weeks After Surgery. Poses that involve bending your head down or high-intensity movements that require breath-holding can raise intraocular pressure. Start with stretching and breathing-focused movements, and dab away sweat to keep the eye area clean.Swimming & Intense Exercise → At Least 4 Weeks After Surgery. Pool bacteria and chlorine are the biggest threats to healing eyes. Martial arts and ball sports can also deliver impact to the eyes, so it is safest to hold off for at least one month.Use Artificial Tears Before and After Exercise. Strong air conditioning at the gym and sweat evaporation can quickly dry out your eyes. Using artificial tears before and after your workout will help you manage dryness much more comfortably.Above all, the most important thing is confirming your progress at follow-up appointments. Recovery speed varies from person to person, and only a professional can assess the degree of corneal and nerve recovery. "My friend was exercising again after a week" is never a reliable benchmark. Your eyes recover at their own pace, and only yours.Choose Patience Over ImpatienceExercise is more than just moving your body — it's a daily source of energy that keeps our lives healthy and vibrant. So feeling disappointed or frustrated about having to pause it after surgery is completely natural.But unlike muscles, your eyes don't respond well to the idea of "push through the pain and keep going." They are sensitive to even the smallest stimuli, and recovery speed varies greatly between individuals, which means a moment of impatience can affect your eye health for the rest of your life.It's okay to start a little later. That time is not an empty gap — it's an investment period that allows your eyes to heal calmly and steadily so you can enjoy exercise safely again.It's something I always say to my patients in the clinic: "You can always exercise again, but you cannot replace your eyes."Your eye health is what makes the joy of exercise possible. We hope you choose patience over impatience, so you can stay active and vibrant for many years to come.Make the safest choice for your precious eyes — with BGN by your side.

Not Sure What Makes LASIK, LASEK, and SMILE Different?BGN Eye Clinic — Jamsil Lotte World TowerHello, this is BGN Eye Clinic Jamsil Lotte World Tower.In the middle of a busy day of consultations, I sometimes catch myself wondering, "What eye concern will I hear most about today?" The questions patients ask most frequently have a way of staying with you — they just keep circling back.Looking back over my time here, the single question I've been asked more than any other is: "LASIK, LASEK, SMILE… the names all sound alike — what's actually different about them?"Honestly, even when I first started working in ophthalmology, I remember pausing before each explanation and thinking, "How do I make this easy to understand today?" It was a question I took seriously every single time.These days, my go-to explanation is: "All three procedures share the same goal — correcting your vision — but they differ in method, recovery process, and the eye conditions they're best suited for."To bring that to life in a more relatable way, today I'd like to walk through the differences using a real consultation case: a patient in their 30s who came in not long ago.A Conversation from the Consultation RoomThe patient who came in for consultation was an office worker in their early thirties. They spent the majority of their workday in front of a computer, and as a result, they'd been dealing with persistent eye fatigue for some time.When we sat down together, they looked a little uncertain and said: "Some of my friends have had LASIK, others swear by SMILE… everyone seems to say something different. I honestly have no idea which one I should go with."I completely understood where they were coming from. It's actually a very common experience — many people considering vision correction surgery feel exactly this kind of confusion. So we took our time going through their eye health together, step by step. As we worked through each factor, I explained how it would inform the most appropriate choice for their specific eyes and lifestyle.Corneal thickness: One of the most critical measurements in determining which procedure — LASIK, LASEK, or SMILE — is a viable and safe optionTear secretion levels: If dryness is a significant concern, this needs to be factored in, as it can affect post-operative comfort during recoveryOccupational demands: For someone who spends all day at a screen, it's important to understand any restrictions on eye use during the initial recovery window"Because each procedure differs in technique, recovery timeline, and the eye conditions it suits best, choosing based solely on what friends recommend isn't enough — the most important step is finding out which option is right for your eyes."As we talked through it together, I could see the patient gradually relaxing, and the conversation took on a much more comfortable, open quality from that point on.LASIK, LASEK, and SMILE — What Makes Each One Different?LASIKLASIK works by creating a thin flap in the cornea, then using a laser to reshape the tissue underneath before the flap is repositioned. Because of this flap, recovery is remarkably fast — most patients can resume daily activities the very next day. Discomfort is minimal, making LASIK a strong choice for those who want to get back to their routine as quickly as possible.LASEKLASEK involves removing the corneal epithelium before applying the laser correction. Since there's no flap, the procedure is structurally more conservative — but recovery takes longer. Patients typically need around two to three weeks for the epithelium to regenerate, and some discomfort and light sensitivity are common during that period. LASEK tends to be recommended when the cornea is thinner or when LASIK isn't a suitable option.SMILESMILE minimizes surface disruption by making only a tiny 2–3mm incision, through which the laser correction is performed internally. Recovery is fast, discomfort is minimal, and it's particularly well-suited for patients who are sensitive to dryness or anxious about post-operative pain. Think of it as combining the best aspects of both LASIK and LASEK — rapid recovery with minimal surface trauma.In short: LASIK is the fast-recovery option, LASEK is the conservative option, and SMILE is the minimal-incision option — that's the simplest way to tell them apart!Post-Operative Care Also Varies by ProcedureGoing back to our office worker patient — their case makes this easier to understand. This was someone whose eyes fatigued quickly from screen work, and who was already quite sensitive to dryness on a day-to-day basis.As I walked them through the examination results, I also explained the post-operative considerations for each procedure in detail.If choosing LASIK, recovery is fast overall, but it's important to give your eyes adequate rest for the first two to three days — avoiding excessive screen use and wearing protective eyewear during the early post-operative period.If choosing LASEK, the epithelial regrowth phase can bring some discomfort and light sensitivity, so consistent use of artificial tears and sunglasses is strongly advised. UV protection outdoors and good hydration also support healing during this time.If choosing SMILE, initial discomfort is generally minimal due to the small incision — but managing dryness and being mindful of eye use habits in the early stages is still important. Given how quickly recovery progresses, I always emphasize that those early habits play a significant role in achieving stable, lasting vision.The patient had a lot to consider: the eye fatigue that came with their screen-heavy work, their sensitivity to dryness, and the need to keep disruption to their work and daily life to a minimum during recovery.After weighing all the factors, and with a clear plan for early aftercare and lifestyle habits, the patient chose SMILE — drawn particularly by how quickly it would allow them to return to work.Of course, every person's corneal structure and recovery pace is different, so even with the same procedure, the level of discomfort and the speed of healing can vary. By following the aftercare guidance carefully, this patient was able to return to everyday life with minimal disruption — and the anxiety they'd felt going in dissolved surprisingly quickly.Why Does Recovery Differ Between Procedures?The answer comes down to which layer of the cornea is being treated.LASIK targets the inner corneal layer (stroma) directly, which is why recovery is fast — but a flap is required to access it.LASEK removes the outer layer (epithelium) first, making recovery slower, but leaving the underlying corneal structure intact and undisturbed.SMILE leaves the epithelium in place entirely, correcting the inner tissue through a micro-incision — which is why pain and dryness are minimized and recovery is swift.In essence, the key difference between procedures comes down to how much corneal tissue is disturbed in the process.A Note from Our OptometristPatients often ask us: "Which surgery is the best one?"My answer is always the same: "The best surgery is the one that is most precisely matched to the structure and condition of your individual eyes."Corneal thickness, curvature, tear film stability, and sensitivity to dryness are all unique to each person. Choosing based on what's "trending" or what worked for someone you know simply isn't the right approach.That's why the safest and most effective path is always a decision grounded in comprehensive eye examination and personalized diagnosis.The right procedure varies from person to person, depending on the condition of their eyes and the realities of their lifestyle. Rather than following trends or secondhand recommendations, the most important thing is to determine — through precise examination and tailored consultation — which approach is truly right for your eyes.A single decision can make a profound difference to your vision, your eye health, and the quality of your everyday life for years to come. Please don't dismiss even minor discomfort, and always consult with a specialist before making your choice.Your eyes deserve the best. Find the vision correction procedure that's right for you.

LASIK, LASEK & SMILE — Do You Really Know What You're Getting Into? Ask a Practicing Surgeon!BGN Eye Clinic · Dr. Kim Jeong-wanHello, I'm Dr. Kim Jeong-wan of BGN Eye Clinic, Jamsil Lotte World Tower.Today, I want to address some of the questions I've heard most often over the years of performing and consulting on LASIK and SMILE procedures. I'll be digging into them one by one right here on the blog.Because vision correction procedures — SMILE, LASIK, LASEK, and the like — have a clear purpose and a well-defined process, the questions patients and their families ask tend to overlap a lot. So much so that midway through a consultation, I can usually sense exactly what someone is about to ask before they even say it. (I've just done too many of these… 😅)With that in mind, I decided to write this up properly — so thoroughly that next time someone asks, I can just send them the link instead of answering from scratch. Here are my honest answers as a practicing surgeon.Fun fact: one of my old friends — someone I personally performed SMILE on last year (2024) — asked three of the exact same questions I'm covering today. That was all the confirmation I needed that patients' concerns are remarkably universal.Alright, let's get into it!Q1. If You've Worn Contact Lenses, You Can't Get LASIK?NO!During our busy winter and summer seasons when patients come in for pre-operative exams, one of the very first things I hear is something like this:"Doctor, I've been wearing contacts for years… is that going to be a problem? 😢"The short answer: absolutely not! 😄 To be precise, whether contact lens use will affect your eligibility for surgery is something we simply "cannot determine in advance" — because there is no direct causal relationship between the two.For example, if all other factors (corneal thickness, degree of dryness, etc.) are within acceptable ranges, the fact that someone has worn lenses for a long time does not disqualify them from surgery. Conversely, someone who has never worn a lens in their life is not automatically eligible if other conditions aren't met. Simply put: contact lens history and surgical eligibility are completely independent of each other.That said, there is one thing worth noting: in some cases, the physical habit of inserting and removing lenses has caused significant corneal damage over time. If that process repeatedly stressed the cornea in an unhealthy way over many years, then the cornea's health and resilience need to be carefully assessed before proceeding with LASIK or SMILE.The good news: this is almost always caught during the pre-operative examination phase, so there's really no need to worry ahead of time. At our clinic, one of our 11 diagnostic machines is the Pentacam — when a patient goes through that test, the results come directly to me or one of our other surgeons, and that's where we'd identify any issues of this kind.So to summarize: wearing contact lenses has no bearing on your eligibility for SMILE, LASIK, or LASEK. The exception: if prolonged improper contact lens use has weakened the cornea to a problematic degree, that will show up in the examination.As long as you've been wearing lenses the right way — stopping lens wear for just a few days to a week before surgery is typically enough for the cornea to recover its natural shape. Nothing to worry about! (Note: that timeline applies to soft lenses. Hard lenses take a bit longer — plan for about 2 weeks.)Conclusion: Even if you've worn contacts for 20 years — as long as you stop wearing them and give your cornea enough time to return to its natural shape before surgery, LASIK, SMILE, and LASEK are all perfectly fine. (The only exception: if improper lens use has caused extensive corneal damage, that becomes a separate issue to address.)Q2. Are Dedicated Eye Clinics Better at LASIK Than Large General Hospitals?It depends…This one is both a No and a Yes at the same time. What I mean is: the single most important factor in vision correction surgery — SMILE, LASIK, LASEK — is the operating surgeon's experience.Here's an analogy. I'm a doctor, but I get sick too. When I do, I naturally want my doctor to have as much experience and clinical mileage as possible. It just builds trust. The same logic applies to LASIK, LASEK, and SMILE.What makes vision correction surgery particularly interesting is that it's performed at an exceptionally high volume in Korea every year. That means certain clinics have built up a truly overwhelming accumulation of surgical experience. The sheer number of SMILE, LASIK, and LASEK procedures performed annually far exceeds that of something like spinal neurosurgery.With that depth of experience, a seasoned clinic and surgeon have seen it all: the full range of pre-operative data, the statistical variance, the edge cases, the potential risks, and even the unexpected patient movements mid-procedure. Every small detail — the patient flow, the way instructions are phrased, the surgical tools, the examination sequence — is refined through data and repetition. That's why, as a practicing surgeon, I'm confident saying: experience-rich clinics are simply the best option.When It Comes to Your Eyes, Thorough Examination Is Non-NegotiableThere's another term that tends to carry an unfair stigma: "assembly-line surgery." Apply that phrase to someone's eyes, and it understandably sounds alarming — cold, impersonal, rushed.But if you actually look at what's being described, "assembly-line" is really shorthand for:A perfectly defined procedure followed from start to finishEstablished through extensive research and trial and errorRepresenting the safest, most reliable surgical pathwayExecuted consistently and without deviation, like a well-oiled machineEven the most experienced expert in any field can have an off day — skipping steps, cutting corners based on mood or circumstances. In most fields, that's unfortunate. In medicine, it can be catastrophic. That's why adhering to a defined, safe, and precise process matters enormously — and that kind of consistency is only possible when the volume of procedures is high enough to truly systematize the process.So rather than "assembly-line surgery," I'd call it "protocol-driven surgery." When every step is pre-set and calibrated to the patient's individual examination results, it becomes possible to perform surgery safely across a very wide range of patients — and that translates directly into an ever-growing archive of clinical experience.To wrap up: whether it's a large general hospital, a university hospital, a neighborhood eye clinic, or a dedicated LASIK center — the best place to go is simply the one with the most surgical experience.Conclusion: The best clinic for surgery is one with a high surgical volume, an experienced surgeon, and the infrastructure and systems in place to let that surgeon perform at their best — without interference.Q3. Do Clinics Run Too Many Tests Before SMILE or LASIK?NO!On this one, as a practicing surgeon, I want to say unequivocally: absolutely not. Never.Even at our own clinic, the full pre-operative examination for SMILE, LASEK, LASIK, and ICL follows a set course — and yes, it involves a lot of steps and takes some time. We run about 11 different tests, including Optos imaging and Pentacam. Occasionally, something unusual or unexpected is detected during testing — something the patient had no idea about — and we may need to refer them for additional tests or to another specialist.But skipping tests? If someone asked me to do that, I wouldn't perform the surgery. It's not that I wouldn't — I genuinely can't. As a doctor, this is not a matter of preference; it's a matter of basic medical responsibility.Without knowing the precise state of your eyes, it would be medically indefensible for me to say "LASIK is fine" or "SMILE is the better choice." To make any kind of medical judgment without that data — or with incomplete data — would violate the very oath every doctor takes when they receive their license.Take the Pentacam, for example — one of the essential pre-operative tools. With it, we can evaluate:The full shape of the corneaThe curvature of the entire cornea and its precise anglesThe condition and morphology of both the anterior and posterior corneal surfacesThe anterior lens interface and every surrounding boundary zoneCorneal thickness, volume, and depth across multiple layersAnd the reason we need all of that? Because we are literally reshaping that cornea. The core action in LASIK and SMILE is removing a precise layer of corneal tissue. To do that safely, we need to know the exact topography and dimensions of what we're working with — otherwise:Remove too much → We may encroach on unsafe territory, leading to potential complications later.Remove too little → Vision may not reach the desired level of correction.Remove incorrectly → Light refraction and visual quality may be compromised.Comprehensive testing is what allows us to avoid all of the above. So even if the examination process feels long and a little tedious, I hope patients and their families can embrace it with patience. After all — this is your eyes we're talking about.Conclusion: Vision correction examinations are never excessive — if anything, doing too little is the real risk! Even if the process feels lengthy, every single test is necessary for a safe outcome and the best possible vision.Q4. Is Winter Better for Surgery? Should You Avoid Getting It Done in Summer?NO!There is no meaningful difference. The surgery itself — LASIK, SMILE, LASEK — is completely unaffected by the season. Someone once asked me: "Isn't it true that summer humidity makes the cornea expand after surgery, so you shouldn't get it done then?" Nope. That's not a thing.The procedure itself is not influenced by whether it's summer or winter. Within the temperature range that humans inhabit, there's simply no issue. So why is there a small nuance when you look at the full picture?The answer is lifestyle habits. In summer, compared to winter, there are far more opportunities for things to get into your eyes — and more chances to rub or touch them. What kinds of things end up in your eyes in summer?Sea waterSweatRainIn summer, people shower more frequently, there are more insects, and when it's hot and itchy, people reach for their eyes without thinking. The surgery in summer is perfectly fine — but the lifestyle that comes with summer carries a slightly higher potential for accidental eye contact.Think about how much more we're outdoors in summer — riverside hangouts, beer gardens, barbecues, vacations, the beach, water parks… All of that excitement puts people in an elevated, carefree mood, which means they're more likely to absentmindedly rub their eyes. And that's precisely why summer deserves a bit more caution post-surgery.Conclusion: Temperature and humidity in summer vs. winter? Not an issue at all. But the energy and excitement of summer can lead to unconsciously touching your eyes more often — and that's the real concern! (If you have the self-discipline to resist that… then you have nothing to worry about.)Wrapping Up…!I've done my best here to tackle four of the most persistent myths and misconceptions I encounter about SMILE, LASIK, and LASEK — with as much detail as I could pack in as a practicing surgeon. There's always so much more I want to say during consultations, but the nature of clinical appointments means sticking to what's directly relevant to each patient. This blog is where I get to ramble a little, connect the dots, and give you the full reasoning behind each answer.As I was writing this, a few more frequently asked questions came to mind:Is there a big difference in visual outcomes between LASIK and SMILE?Can your vision deteriorate again after LASIK?Does it cause early-onset presbyopia?Since this is already getting quite long, I'll stop here and continue with more myths and questions in Part 2. It's peak surgery season right now, and seeing so many patients leave our clinic with a whole new perspective — literally — is one of the most rewarding parts of this work. Wishing everyone bright, healthy eyes!

LASIK, LASEK, SMILE, or Lens Implant Surgery — Which One Is Right for You?Hello, this is BGN Eye Clinic Jamsil Lotte World Tower.Just yesterday, after completing a comprehensive eye examination, I had a familiar moment: I told a patient that LASIK, LASEK, and SMILE were all viable options for them, and they looked at me and said, "So… which one should I get? There are so many, I have no idea." Having multiple good options is a great thing — but it seems that's exactly what makes the decision feel overwhelming.Today, I'd like to share the same explanations I actually give patients during consultations — walking through the pros and cons of each procedure and what factors should guide your choice.We Recommend Based on Your Examination ResultsWhen patients ask, "What would you recommend?" I usually respond like this:"Since your test results show all three options are suitable for you, would you like to go with the one that involves the least discomfort and the fastest recovery?"Almost everyone says yes — and that procedure is SMILE.Patients whose corneal thickness, myopia prescription, and other measurements all come back within healthy ranges most commonly end up choosing SMILE.Why LASEK Tends to Be the Most UncomfortableWhen I explain LASEK to patients, I use a comparison that seems to resonate: "LASEK basically involves peeling back the surface of the cornea — it's a lot like scraping the skin off your knee when you fall."In practice, LASEK works by removing the corneal epithelium and then reshaping the cornea with a laser. The discomfort comes while waiting for that epithelial layer to grow back — it's a bit painful, and recovery takes comparatively longer.LASIK, by contrast, involves creating a thin flap in the cornea, treating the tissue underneath, and then laying the flap back down. This means almost no pain and a quick recovery.SMILE is even simpler — because only a tiny internal lenticule is extracted from within the cornea, surface disruption is kept to an absolute minimum.So Why Would Anyone Choose LASEK?A lot of patients wonder: "If LASEK is more painful, why would anyone choose it?" There are really two main reasons.CostLASEK is generally a bit less expensive than the other procedures.Corneal EligibilitySome patients simply aren't suitable candidates for LASIK or SMILE — and for them, LASEK may be the only available option.Corneal Thickness and Prescription Are the Key FactorsMany patients come in having heard that "corneal thickness is really important" — and they're right. Corneal thickness is one of the most critical measurements we evaluate.LASEK removes less corneal tissue overall, which is why patients with borderline corneal thickness measurements are sometimes directed toward it. Patients with sufficient corneal thickness may be candidates for LASIK, LASEK, or SMILE — in which case, lifestyle and personal preferences become the deciding factors.When the Examination Rules Out All Surgical OptionsOccasionally, a patient completes the full battery of 20-plus diagnostic tests and receives the difficult news that no procedure is currently safe for them. This happens when corneal topography or thickness measurements fall outside safe surgical parameters, and there isn't enough anterior chamber depth for lens implant surgery either.Patients are naturally disappointed, but when we walk through the measurements together and I explain the reasoning, most people respond with "Safety comes first" and understand completely.When Is Lens Implant Surgery the Answer?For patients who aren't eligible for LASIK, LASEK, or SMILE, lens implant surgery is the next option to consider. Rather than reshaping the cornea, this procedure places a specially designed lens inside the eye. However, it does require sufficient space within the eye to be feasible.When Patients Push Back on LASEKSometimes, when I tell a patient "LASEK is the only procedure suitable for you," their immediate reaction is: "I absolutely cannot handle pain!" — and they refuse outright. This is especially common among people who can't take extended time off work. We generally recommend taking 4–5 days off after LASEK.But when I explain, "If you want to be free from glasses, this is the only path available to you right now…" — almost everyone comes around in the end.Accurate Measurement — and the Whole Person — MatterWhat I've come to appreciate through years of consultations is that choosing the right procedure requires looking at the whole picture — not just the numbers, but the person behind them. Corneal thickness and prescription values matter, but so does occupation, lifestyle, and how much recovery time a patient can realistically afford.For example, athletes or people who practice contact sports are often steered toward LASEK, which offers greater structural safety against physical impact. Professionals who need to return to work quickly tend to prefer SMILE or LASIK.SummaryTo minimize discomfort → SMILE > LASIK > LASEKFor fastest recovery → SMILE ≥ LASIK > LASEKIf cost is a priority → LASEK is generally most affordableIf corneal conditions are marginal → Only LASEK or lens implant surgery may be possibleIf no procedure is suitable → Seek consultations elsewhere, but never rush into a procedure that isn't safeWhen you come in for your examination, sharing your lifestyle and priorities upfront makes a real difference. "I'd like the shortest recovery time possible," "Cost is a factor for me," "I play sports regularly so safety is my top concern" — that kind of information helps enormously.Vision correction surgery is permanent and irreversible — so please take the time to get a thorough examination and make your decision carefully.

The Complete Guide to SMILE Pro A to Z:SMILE Pro vs. SMILE — What's the Difference?A Premium Vision Correction Guide from BGN Eye Clinic, Jamsil Lotte World TowerHello. This is BGN Eye Clinic ,Jamsil Lotte World Tower.I still vividly remember the first time I heard the name "SMILE Pro." At a medical conference, when it was described as "an upgraded version of SMILE," I'll be honest — I was skeptical. I thought, "How much better could it really be than standard SMILE?" and "Will patients actually feel a noticeable difference?"But when I got hands-on with the actual equipment and performed my first case, the feeling was unmistakably different. I had the clear conviction: "This is genuinely a step forward." Today, I'd like to walk you through what SMILE Pro is all about, drawing from what I've personally experienced and observed in the clinic."Doctor, contact lenses make my eyes feel dry so quickly.""Wearing glasses with a mask fogs everything up — it's so frustrating.""If I need a whole week off to recover, surgery just isn't realistic for me…"When I hear "Is there a procedure with a fast, easy recovery?", I find myself nodding along. And these days, the word that comes up most often in my consultations is "SMILE Pro." Beyond LASIK, LASEK, and standard SMILE, this next-generation procedure has been generating incredible excitement among patients.In this article, I'll cover the key questions many of you may have:1. How SMILE Pro works and what makes it different2. Its advantages and limitations compared to LASIK, LASEK, and SMILE3. What the post-operative recovery process actually looks like, step by stepHow SMILE Pro WorksSMILE Pro is fundamentally the same as standard SMILE in that it uses a small-incision lenticule extraction approach. However, the laser technology behind it has taken a significant leap forward — and that's the key.What Is Lenticule Extraction?This technique involves precisely cutting and removing only the thin layer of corneal tissue that needs to be corrected. Unlike LASIK, there's no large corneal flap; unlike LASEK, the epithelium isn't fully removed. Instead, a femtosecond laser creates a thin, disc-shaped piece of tissue (the lenticule) inside the cornea, which is then extracted through a tiny incision of about 2mm.The size of that incision matters enormously. LASIK requires an incision of roughly 20mm, standard SMILE uses 3–4mm, but SMILE Pro reduces this to an average of just 2mm. This seemingly small difference has a major impact on recovery time and post-operative discomfort.The Laser UpgradeThe most significant advancement SMILE Pro offers over standard SMILE is in laser speed and precision.• Standard SMILE: Approximately 25–28 seconds• SMILE Pro: Approximately 10 seconds or lessWith the procedure time cut by more than half, the psychological burden of having to fixate on the laser light is greatly reduced. I like to explain it this way: if standard SMILE was 4G, SMILE Pro is the 5G upgrade.A Step-by-Step Look at the SMILE Pro Procedure1. Laser Planning After Eye Examination — Custom-Designed for Your EyesBefore surgery, a comprehensive examination measures corneal thickness and astigmatism axis, among other parameters. Based on this data, the laser system is automatically calibrated to the exact correction values needed for your eyes. Think of it like a bespoke suit — a "blueprint made just for you" is prepared in advance.Corneal endothelial cell count is a mandatory check. If the count is too low, vision correction surgery may carry additional risk, so this must always be confirmed beforehand.2. Lenticule Creation — Sculpting Within the CorneaThe femtosecond laser fires to create a thin, disc-shaped lenticule at the precise depth within the cornea. This step typically takes around 10 seconds and involves virtually no pain. If your eye moves slightly, the laser automatically compensates — so there's no need to worry.3. Micro-Incision — Opening Just 2mmIf LASIK is like lifting the entire roof off a house to make repairs, SMILE Pro is like opening a tiny hatch and removing only what needs to come out. With only a 2mm opening, there's virtually no visible wound on the surface, and recovery is remarkably fast.4. Lenticule Removal — The Moment Vision Is CorrectedUsing a delicate microsurgical instrument, the surgeon carefully extracts the lenticule. This is the moment the vision correction takes effect. No sutures or bandage contact lenses are needed — the eye naturally stabilizes within about a day.The Benefits of SMILE Pro — Why Are Patients Paying Attention?Greater Nerve Preservation Means Less Dry EyeLASIK's flap creation severs a significant number of corneal nerves, which can lead to chronic dryness and irritation. SMILE Pro's 2mm micro-incision minimizes nerve damage, which means patients spend far less time relying on artificial tears afterward.Superior Structural Integrity of the CorneaBecause the strong anterior corneal layers remain intact while only the internal lenticule is removed, the cornea maintains better resistance to external impact. This makes SMILE Pro especially well-suited for athletes, military personnel, and police officers with active lifestyles.Better Quality of Vision, Not Just QuantityThe more uniform laser cutting reduces internal light scattering within the cornea. Patients report very high satisfaction with reduced glare and halos during night driving and other low-light activities.Real Patient Stories — Why They Chose SMILE ProCase 1. University Student During Exam Season: A student whose contact lens dryness was interfering with studying. Returned to the library the very next day with clear, comfortable vision — satisfaction was extremely high.Case 2. A Busy Professional: Someone who couldn't afford to take extended time off. Had surgery on Friday evening and was back at work on Monday — now enjoying daily life without glasses.Case 3. Athletes and Military Personnel: Those who were anxious about the risk of impact injury. Chose SMILE Pro for its flap-free structural safety and are now fully focused on training.Pre- and Post-Operative Care Guide for SMILE ProBefore Surgery• Discontinue contact lens use: Stop wearing soft lenses at least 1 week before, and hard lenses at least 2 weeks before, to ensure accurate corneal measurements.• No eye makeup on the day: Residual mascara, eyeliner, and similar products can interfere with examination accuracy.• Optimize your condition: Get adequate sleep and stay well-hydrated to keep your eyes in their best possible state.Post-Surgery Recovery Timeline• Day of surgery: Avoid rubbing your eyes firmly and apply prescribed eye drops on schedule.• First week: Take care to keep water out of the eyes directly and attend all scheduled follow-up visits.• One month: Swimming and vigorous exercise become possible again. Use artificial tears frequently in dry environments. SMILE Pro is a procedure with many clear advantages, but it is not unconditionally the right choice for everyone. For those with very high myopia or an unusually thin cornea, the safest approach will depend entirely on their individual eye condition.Finding the safest and most suitable procedure for your own eyes is what matters most. Through accurate information and thorough examination, we are here to help you make the best possible decision for your precious vision. We wish you all bright, clear eyes — thank you.The time for your vision to go "Pro" — BGN is with you every step of the way.