What Are Specialty Contact Lenses? Who wears them and why?
Our eyes are complex organs. Our eyes control the way light passes through to reach the retina so that a clear image is displayed. This image is then transformed into electric impulses, which will eventually reach our brain to ultimately create our vision. While the visual process depends on numerous factors, the initial step relies on the cornea to center the rays of light toward the retina, however, when the corneas shape, curvature, or angle is irregular, our vision becomes distorted.
Do you have distorted vision? Contact Dr. Meghan Schiffer at Optix Family Eyecare
Patients from Plainview, NY and across New York travel to our practice for a specialty contact lens consultations.
While standard refractive error can be corrected through prescription glasses, whether through plus or minus powers (depending on nearsightedness or farsightedness), an irregular cornea as a result from an eye disease like keratoconus will prevent prescription eyeglasses from directing the light to the cornea. Therefore, through the usage of specialty contact lenses like scleral lenses or hybrid lenses, Dr. Meghan Schiffer can correct the vision of an irregular cornea to ensure the light passing through the eye reaches its target, the retina. With various options available, we have fitted numerous specialty contact lenses for maximum comfort, clarity, and care.
Benefits of Scleral Lenses
Vision from scleral lenses are far better than glasses or contact lenses. The shape of your cornea determines how clearly you see, and glasses or regular lenses don't fix or reshape the cornea. These lenses, however, mask the cornea, giving you excellent vision.
If you've been told in the past that you cannot wear contact lenses because of an irregular cornea or other problems, you may want to get a second opinion and ask Dr. Meghan Schiffer of Optix Family Eyecare about scleral contact lenses.
Scleral contacts are large-diameter gas permeable contact lenses specially designed to vault over the entire corneal surface and rest on the "white" of the eye (sclera). These extra large contacts replace the irregular cornea with a perfectly smooth optical surface in order to correct vision problems caused by corneal irregularities like keratoconus. Also, the space between the cornea and the back surface of a scleral lens acts as a fluid reservoir to provide comfort for people with severe dry eyes who otherwise could not tolerate contact lens wear.
More complex conditions, including advanced keratoconus, pathologically dry eyes or severe ocular surface disease that might require a large tear reservoir, often are fitted with larger scleral lenses, as they have more capacity to hold fluid or bridge large changes in corneal curvature.
During your contact lens exam and fitting, your eye care professional will determine the best scleral lens type and size for your specific needs.