Laser in situ keratomileusis, commonly known as LASIK, is a surgical procedure to treat myopia, hyperopia, astigmatism and presbyopia.
A laser is used to reshape your cornea to change the way how light is focused onto the retina. LASIK reduces your independence on spectacle or contact lens correction, for convenience as well as to look better cosmetically.
Pre-operative LASIK Assessment
A pre-operative examination is crucial in the outcomes of the surgery. Soft contact lens wearers are required to cease lens wear for 5 days and hard contact lens wearers are required to cease lens wear for 2 weeks before the pre-op LASIK assessment. Do note that your degree should be stable for a few years before considering this operation.
A thorough eye assessment would be carried out to determine if you are a suitable candidate for LASIK. The comprehensive examination encompasses an accurate measurement of your eye degree, curvature and thickness of your cornea (keratometry and pachymetry), pupil size measurement in bright and dim conditions as well as to ensure that your eyes are free from any eye abnormalities.
If you are not a suitable candidate for LASIK, other refractive surgery might be offered.
Implantable Contact Lenses (ICL)
Refractive Lens Exchange (Clear Lens Extraction) is a procedure whereby an artificial intraocular lens would be implanted after the removal of the eye’s natural lens, which could correct your myopia or hyperopia. However, you would lose your focusing ability, which can be corrected with glasses or multifocal IOL implants.
Risks and Complications of LASIK
Glare and haloes especially at night
Under-correction or over-correction in which enhancement surgery may be considered or the use of glasses or contact lens to correct vision
Corneal flap problems
The surgical procedure is done under local anaesthesia.
There are two methods in the flap-creation of the cornea. A microkeratome blade is used or an intralase laser, a femtosecond laser, which is the “bladeless” method to create the corneal flap.
Once the flap is lifted, an excimer laser would then reshape and sculpts the cornea accordingly.
The flap would then be put back into position.
Post-operative LASIK Assessment
Post-operative reviews are required and crucial especially on the 1st post-op day to make sure there is no infection or other complication.
Subsequent post-op reviews can be in a week and in a month’s time, depending on the condition. Refraction will be carried out on every visit.