Sclera Contact Lenses – Replace The Irregular Cornea With A Smooth Optical Surfaceby Steven Jones Owner
If you have been told that you cannot wear contact lenses because of the irregular cornea then the sclera contact lenses are designed to treat a variety of eye conditions. The problem of the irregular cornea can cause by keratoconus, a non-inflammatory eye condition, in which the normally round dome-shaped cornea progressively thins causing a cone-like bulge to develop.
Sclera contact lenses are large-diameter gas permeable contact lenses designed to arch over the entire corneal surface and rest on the white portion of the eye. So lenses replace the irregular cornea with a perfectly smooth optical surface to correct vision problems caused by keratoconus and other corneal irregularities.
Causes Of Keratoconus
Keratoconus is caused by a decreased collagen in the cornea. Collagen, protective antioxidants, a tiny fiber of protein helps to hold the cornea in place and keep it from bulging. When this become weak, not able to hold to keep the shape of the cornea, resulting, the cornea becomes progressively take the form of a cone.
Symptoms of Keratoconus
Keratoconus can lead to very different vision between the two eyes as well symptoms can vary in each eye and can be changed over a period of time. In the early stage, Symptoms includes:
- Mild burning
- Sensitivity to light and glare
- Redness in the eyes
- Slightly distorted vision, straight lines look bent or wavy
In the later stage of Keratoconus, vision becomes more blurry and distorted. Increase nearsightedness or astigmatism and not being able to wear contact lenses. They may uncomfortable and not fit properly. By wearing sclera contact lenses, you won’t experience fluctuations in vision due to the presence of the tear layer that bathes the cornea and keeps it lubricated, as long as you keep wearing lenses.
Keratoconus - Run in Families
If you have children, it is a good idea to have checked their eyes starting at the age of 10. People, who have a certain medical problem, are more prone to develop this condition rapidly, like certain allergic conditions or it could be related to chronic eye rubbing.
In addition to keratoconus, sclera contact lenses can be used for the people with severe dry eyes caused by conditions such as graft-versus-host disease (GVHD) and Stevens-Johnson syndrome.
Keratoconus - Treatment
Treatment of Keratoconus starts with new eyeglasses. Still, even if you are not comfortable wearing eyeglasses, then contact lenses, usually gas permeable sclera contact lenses may be recommended or other treatments to strengthen the cornea and improve the vision.
You don’t need to have special eye conditions to wear contact lenses but still, you should have a recent eye health check-ups to make sure that your eyes are healthy enough to wear sclera contact lenses. Also, depending on the complexity of the problem and how the individual eye tolerates the contact lenses, adjustments of lens parameters may be needed.
Created on Oct 30th 2018 04:28. Viewed 285 times.