Refractive surgery: LASIK


LASIK Center | Bangkok Hospital

LASIK (Laser-assisted in situ keratomileusis) is a refractive surgery that changes the shape of the cornea. To treat presbyopia, LASIK can be conducted to improve close-up vision in non-dominant eye which is similar to wear monovision contact lenses.

If only presbyopia presents without other vision problems

  • LASIK with monovision correction in non-dominant eye can be performed. During this procedure, an ophthalmologist makes a thin, hinged flap deeper into the cornea. Then a laser is used to remove inner layers of the cornea to steepen its domed shape. Due to the advancements in optical technology, Laser Blended Vision is a relatively new treatment for presbyopia as an upgrade on monovision. Laser Blended Vision uses laser eye surgery to treat one eye for distance vision and the other for close-up distances. After surgery, both laser-corrected eyes will work together. With the use of the MEL® 80 laser from ZEISS which is internally accepted as the newest laser technology, superior benefit obtained from Laser Blended Vision Program is a wider range of vision for each eye. As a result, patients are able to clearly see objects at distance, middle distance and close-up. As time goes by, the brain will gradually get used to the new ways in which the eyes are focusing. Depending on individual’s conditions, some people may experience perfect vision in a week following surgery, while others may take 1 month or longer for the full benefits. In addition, Laser Blended Vision causes less of a dramatic change for the brain to get used to it, thus the period of adjustment is usually much shorter than monovision approach.

If presbyopia presents with other previous vision problems, such as nearsightedness, congenital farsightedness or astigmatism

Different options are available, depending on individual’s preferences, including:  

  • LASIK with monovision approach or Laser Blended Vision program to improve near and middle-distance vision in non-dominant eye and distance vision in dominant eye.
  • LASIK to correct nearsightedness, congenital farsightedness or astigmatism without the correction of presbyopia. After LASIK, patients can get a better distance vision but reading eyeglasses are still needed.

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