What do you do if the shape of your eye limits your visual acuity? In the case of common refractive errors such as myopia and hyperopia, ordinary glasses or soft contacts can often restore your vision to optimal clarity. But these options may not be nearly as helpful for keratoconus, in which the cornea of the eye, not the eyeball, is severely misshapen. The good news is that you can still correct for keratoconus with the right kinds of specialty contact lenses -- and our Greensburg optometrist at Noble Vision Center can provide you with them.
Keratoconus is a progressive vision disorder that occurs when the cornea changes from its normal spherical shape to more of a cone-shaped bulge. This change doesn't usually begin until after puberty, growing more and more exaggerated over a period of years. Keratoconus seems to afflict people who, for whatever reason, are born with thin or weak corneal tissue that can't hold a consistently smooth curvature. It may also be acquired through oxidative damage to the corneas, chronic irritation (which compels constant eye rubbing), and UV exposure.
Since the curvature of the cornea has a direct effect on how incoming light reaches the retina of the eye, you can imagine how much distortion advanced keratoconus can introduce. It can cause severe myopia and astigmatism, occasionally worsened by ruptures and swelling in the corneal tissues.