KERATOPLASTY

Keratoplasty, also called corneal grafting or corneal transplantation, is an operation in which the patient's diseased cornea is replaced by the donor's healthy

VASCULARIZATION OF CORNEA

Normal cornea is avascular except for small capillary loops which are present in the periphery for about 1 mm. In pathological states, it can be invaded by
vessels as a defence mechanism against the disease or injury. However, vascularization interferes with corneal

CORNEAL OPACITIES

The word 'corneal opacification' literally means loss of normal transparency of cornea, which can occur in many conditions. Therefore, the term 'corneal
opacity' is used particularly for the loss of transparency

CORNEAL OEDEMA

 Corneal oedema

The water content of normal cornea is 78 percent. It is kept constant by a balance of factors which draw water in the cornea (e.g., intraocular pressure and swelling pressure of the stromal matrix = 60 mm of Hg) and the factors which draw water out of

KERATOCONUS , KERATOGLOBUS , KERATOCONUS POSTERIOR

KERATOCONUS
Keratoconus (conical cornea) (Fig. 1) is a noninflammatory bilateral (85%) ectatic condition of cornea in its axial part. It usually starts at puberty and progresses slowly.

Etiopathogenesis. It is still not clear. Various theoriesproposed so far label it as developmental condition,degenerative condition, hereditary dystrophy and