Many people do not realize it, but “cataract” is just out-of-date terminology for the age-related degeneration of the eye’s internal, natural lens. That lens does have a “prescription” much like your glasses or contact lenses. A lens prescription is typically measured in units called “diopters.”...
The corneal flap that is created in LASIK involves the outermost 3 of the 5 total layers of the cornea. Those are 1)epithelium, 2) Bowman's membrane, and 3) the stroma. The first of these is the protective layer (like epidermis in the skin). Bowman's layer is actually...
Generally speaking, you can wait as long as you want to have cataract surgery. It is exceptionally rare that a cataract operation needs to be done quickly. You have the surgery done when you decide you need to see better and glasses don't work as well...
First off, you need to know that 20/20 does not mean "perfect vision." It just means normal, typical distance visual acuity (sharpness). [Most young people can actually see better than that at distance, if only with contact lenses or glasses.] By the time we reach middle-age...
First off, you need to know that 20/20 does not mean "perfect vision." It just means normal, typical distance visual acuity (sharpness). [Most young people can actually see better than that at distance, if only with contact lenses or glasses.] By the time we reach middle-age...
Is the Earth a sphere? More or less. It depends how accurately and detailed you want to measure them. The globe (eyeball) is shaped more like a pear: It has a "bulge" on the front where the cornea, iris, and natural lens are. The curvature of...
There is not really any sort of "guardrail" number of diopters that can be successfully AND safely treated with LASIK. In general, the higher the prescription to correct your myopia (nearsightedness) and astigmatism, the more stress you are creating on your cornea over the rest...
There are several ways to correct your distance vision blur that comes from your nearsightedness (myopia). The oldest (and least invasive) is of course to be prescribed the appropriate glasses. While your prescription is not particularly high, there is still going to be some degree...
There are several ways to correct your distance vision blur that comes from your nearsightedness (myopia). The oldest (and least invasive) is of course to be prescribed the appropriate glasses. While your prescription is not particularly high, there is still going to be some degree...
Lots of things related to vision cannot be fixed with LASIK. Disease and degenerations like macular degeneration and cataracts are not at all suited for LASIK treatment. In the world of vision problems that glasses can correct (which is really what refractive surgery like LASIK is meant...