The cornea provides 2/3 of the optical power of the eye. The lens provides the last third. The main role of the cornea is to converge light (light rays) through the anterior chamber and other posterior structures of the eye to the retina. This optical power is possible thanks to the transparency of the cornea, the corneal curvature and its contact with the ambient air. The cornea is made up of four layers:
- Dua layer
And two membranes:
- Bowman’s membrane
- Descemet’s membrane
Common conditions that affect the cornea
Corneal endothelium condition : Cornea Guttata/Fuchs’ Endothelial Dystrophy
In Fuchs’ Dystrophy, fluid builds up in the clear layer of your eye, causing your cornea to swell and thicken. This can lead to glare, blurred or cloudy vision and eye discomfort.
Keratoconus is an eye condition whereby your cornea thins and gradually bulges outward into a cone shape. This can cause blurry, distorted vision. If your keratoconus becomes advanced and your cornea becomes scarred, the best treatment is a corneal transplant.
A pterygium is a pinkish, triangular tissue growth of the cornea of the eye. It can be unsightly and cause chronic irritations. When it spreads over the cornea, it can cause visual disturbance. Extrinsic factors, particularly solar radiation and dust, play a key role in its genesis.
The treatment of pterygium is surgical. In our center, we can remove the pterygium and perform a conjunctival autograft to limit recurrence.