Specialty Contact Lenses for Keratoconus at Noble Vision Center in Greensburg, PA
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.
What Is Keratoconus?
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.
Treating Keratoconus with Specialty Contact Lenses
Glasses may compensate for mild keratoconus -- but as soon as the condition progresses, this form of correction loses its effectiveness. Regular soft contacts are also used up to a point, mainly because they simply duplicate the abnormal corneal shape when they're inserted. For this condition, specialty contact lenses are the answer. Our Greenburg optometrist, Dr. Noble, can discuss several options with you, including:
- Scleral contact lenses - This popular option for keratoconus maintains a rigid, consistent sphere as it vaults over the entire cornea.
- RPG contact lenses - Rigid gas permeable contacts of various sizes maintain a constant shape instead of conforming to the surface of the cornea. (Scleral contacts are the largest RGP lens option.)
- Specialized soft contacts - Specialized soft contact made of state-of-the-art hydrogel materials may succeed where ordinary soft contacts would fail.
- Hybrid or piggyback contacts - Hybrid contacts offer the visual clarity of RGP lenses plus the comfort of a soft outer rim. Piggyback contacts involve an RGP lens sitting on top of a soft lens.
Get Help From Noble Vision Center In Greensburg, PA Today!
Our Greensburg optometrist can help you see clearly even if you have keratoconus. Call 724-837-1240 today to schedule an appointment!