Laser surgery can correct refractive errors of vision, including nearsightedness, or myopia; farsightedness, or hyperopia; and astigmatism, an unevenness of the cornea. Photoreactive keratectomy, or PRK, the most common type of corrective laser...
The brain interprets visual impulses transmitted through the photoreceptors of the retina, to the optic nerve and the brain. Many eye diseases and disorders cause an interruption to the normal pathway for perceiving and interpreting images. Eye...
Lasik is a type of eye surgery that is intended to improve vision. It is an acronym for laser-assisted in-situ keratomileusis. It is a type of refractive surgery, which means it changes the shape of the cornea. The cornea is the clear membrane...
Gradual vision loss can lead to near- or farsightedness, making objects appear blurry and hard to make out. In the past, treatment options included corrective lenses. Contact lenses and glasses seemed to be the only recourse for correcting vision...
You are able to see objects by a complex process. As light bounces off objects it is reflected and picked up by your cornea. The American Optometric Association states that, "For clear vision to occur, the cornea must have the correct shape and...
Contact lenses are an effective aid in correcting poor vision, but sometimes they are not the best option. Cost, comfort and convenience can all be issues that drive a person to seek other alternatives. Contact lenses can be pricey, especially...