cornea physiology

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PHYSIOLOGY OF CORNEA

Amrit Acharya1st Year Resident, NEH2016, Jan. 24

History

Functions of cornea

It is the most important refractive media in the eye .

The transparency of the cornea results from the uniform spacing of the collagen fibrils in the substantia propria.

Any increase in tissue fluid between the fibrils cause cloudiness of the cornea.

The endothelium and epithelium play a major role in limiting fluid uptake by the corneal stroma.

Layers of cornea

Composition of cornea

Water 78% Collagen 15% Type I 50-55% type III