The cornea is the transparent, pate-shaped, remotest subcaste that covers the iris and pupil in the front of the eye. Corneal towel consists of five introductory layers epithelium, Bowman’s subcaste, stroma, Descemet’s membrane and endothelium. Although the cornea is clear, it contains a largely systematized group of cells and proteins. Unlike utmost a pkins in the body, the cornea contains no blood vessels to nourish or cover it against infection. rather, the cornea receives its aliment from the gashes and waterless humor fluid that fills the anterior chamber behind it.