CATARACT
A cataract is developed when the crystalline lens situated just behind the pupil that focuses light onto the retina becomes cloudy. It reduces vision and cause glare from lights and haziness of images. When a cataract is formed, the incident light become blocked or scattered, causing blurry images and poor vision.

PTERYGIUM
A pterigium is a fibro vascular tissue that grows in a triangular shape over the cornea. The leading edge of this tissue often displays a fine, reddish-brown iron deposition line. It commonly occurs on the inner corner of the eye, but also may appear on the outer corner. It may grow large enough to interfere with vision.

KERATOCONUS
Keratoconus is an irregular protrusion of the cornea. Cornea is similar, structurally, to the crystal of a watch. If this crystal or windowpane is not smooth, the light will not bend evenly and an irregular image will be formed. Like looking through a bumpy piece of glass.
Keratoconus is a slowly progressive condition often presenting in the teen or early twenties with decreased vision or visual distortion. As this disease progresses, vision will no longer be correctable with glasses.

The treatment options are: contact lenses wear, Intra Corneal Rings surgery (INTACS) or corneal transplantation, lamellar or penetrating.