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Cliffrod:Just to clarify. LASIK is a laser procedure that is done to the front clear window of the eye (cornea) to reshape the curvature to correct for near sighted (myopia) far sighted (hyperopia) and astigmatism. This procedure is primarily done on patients aged from 22 to about 50. Itis not done sooner because the refractive error is usually not stable until around 22. Usually not done after 50-55 because people areexperiencing presbyopia (lack of near focus ability) so they would still need glasses for near vision so the motivation for LASIK isn't as great.Also one can amortize the cost over a longer period of time and the cornea heals quicker when we are younger.Cataract surgery is removing the cloudy lens on the inside of the eye due to aging and replacing with the IOL. This is the most practiced surgical procedure inthe world. The IOL fits inside of a bag or capsule that the old lens came out of. Often times the back of this capsule can become cloudy after cataract surgery.This is called secondary membrane and happens at least 50% post cataract usually within 6 months to 2-3 years. This is easily corrected with a laser called YAG which is basically like taking a broom and knocking the cobwebs out of the way. This is done quickly behind an instrument and only takesliterally a few minutes. After it is done it doesn't come back.The other important part of this is the health of the optic nerve and macula. Even if the cataract has been removed, IOL implanted and all is clear, if theoptic nerve is compromised, as in with high pressure and glaucoma as an example, then the vision can be compromised. The most common problem isAMD (Age Related Macular Degeneration). As we age the very tiny location in the back of the eye on the retina where the light is focused is called themacula. This is a tiny are 2-4 mm, and if this area is compromised due to pigmentation, cholesterol deposits (drusen) or hemorrhage and edema due todiabetes, then the vision can be moderately to severely compromised. So, even if the cataract surgery is done well and the cornea is clear, if the macula is compromised this can lead to blindness. It would be HIGHLYunlikely to become blind from LASIK and Cataract surgery. On the rare occasion, interior infection can occur post cataract surgery and enophthalmitis(interior inflammation of the globe of the eye) can occur and this can be fast and devastating. I have only seen this a couple times in my career andit is heartbreaking. It sounds like to me that your friend may need an evaluation by a retinal specialist to evaluate the health of the back of the eye.Difficult to pinpoint your friends situation without more specific data, but again, hope this helps.
He said you only have one pair of eyes, why would you risk having a surgery that can not be undone, there is always scar tissue no matter how well the procedure is done.
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