What is the difference between LASIK, LASEK, and SMILE?

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What is the difference between LASIK, LASEK, and SMILE?
LASIK reshapes the cornea with a laser after creating a corneal flap. LASEK reshapes the cornea after removing the surface epithelium. SMILE-type procedures create a small disc of tissue, called a lenticule, within the cornea and remove it through a small incision. Recovery and suitability differ between procedures, so the choice should be based on a thorough examination.

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21	When is it safe to fly after retinal detachment surgery? The timing depends on the type of bubble placed inside your eye. Flying while any air or gas remains can cause the bubble to expand as cabin pressure decreases, leading to a dangerous rise in eye pres...
20	How do I get to the clinic from Gangnam Station? First Samsung Eye Clinic is located on the 5th floor of Hongwoo Building 2, 22 Seocho-daero 78-gil, Seocho-gu, Seoul, near Gangnam Station. The clinic is approximately a two-minute walk from Exit 6. P...
19	How long should I stop wearing contact lenses before my preoperative examination? For accurate measurements, we generally recommend stopping contact lens wear for at least one week before the examination. Contact lenses can temporarily alter corneal shape and tear-film quality, aff...
18	I had LASIK or LASEK years ago, but my vision has become blurry again. Can I have another procedure? A second procedure may be possible, but the first step is to identify why your vision has changed. Treatment will differ depending on whether the cause is residual nearsightedness or astigmatism, dry ...
17	Why does vision sometimes get worse again after laser eye surgery? There are several possible reasons, including progression of myopia, dry eye, residual astigmatism, corneal changes, and age-related changes in the natural lens. A vision test and detailed corneal exa...
16	Why is corneal thickness particularly important for a second laser procedure? An enhancement procedure removes additional tissue from a cornea that has already undergone surgery. We consider the residual stromal bed, total corneal thickness, corneal shape, and expected treatmen...
15	Can glare and halos that started after LASIK be treated? Additional treatment may be considered if glare and halos are related to an irregular cornea or the position of the original treatment zone. However, dry eye, pupil size, or changes in the natural len...
14	Can I be evaluated even if I no longer have records of my previous surgery? Yes. We can begin with your current refraction, corneal topography and tomography, eye pressure measurement, and retinal examination. Records of your original prescription, ablation depth, corneal thi...
13	What are my options if another laser procedure is not safe for my corneas? If further corneal laser treatment is not appropriate, glasses, contact lenses, or an implantable lens may be considered, depending on the eye. If corneal ectasia is suspected, stabilizing the cornea ...
12	How long after my first surgery should I wait before considering an enhancement? The decision is not based on a fixed waiting period alone. What matters most is whether your prescription has stabilized, whether the cornea and tear film have recovered adequately, and whether the re...
11	When is the right time to have cataract surgery? A cataract diagnosis does not always mean you need surgery right away. Surgery is usually considered when changing your glasses no longer provides satisfactory vision or when daily activities such as ...
10	What is the difference between monofocal and multifocal intraocular lenses? A monofocal intraocular lens is generally designed to focus at one distance. Multifocal lenses are designed to reduce reliance on glasses at multiple distances. However, some multifocal IOLs can cause...