Consumers' Association of Penang
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Laser surgery to correct vision isn’t for everyone. There may be unknown long-term side-effects, and there is no guarantee that your eyesight will become better. One the other hand there are reported cases of facing serious problems like night vision difficulties, under-correction and even overcorrection done by the surgeons if you are advised to go through PRK procedure. Again if your doctor advises you LASIK surgery, then also you have the danger of experiencing corneal flap damage of loss, distorted corneal flap etc. which can cause a decrease of best-corrected vision.