The CORNEA is the clear "windshield" in the front of the eye. It is the stronger of the two focusing structures inside the eye. In a healthy eye, the cornea is completely clear. Disease processes can cause the cornea to lose its clarity, resulting in decreased sight.
The cornea has five layers: epithelium, Bowman's layer, stroma, Descemet's membrane and the endothelium. The healthy cornea has no blood vessels within it. It receives all of its nutrients from the tearfilm in front of it, and the fluid inside the eye, called the aqueous humor, behind it. There is a generous supply of nerves inside the cornea. Thus, injuries to the cornea can be quite painful.
PLEASE NOTE: The information contained on this system is not intended to supplant individual professional consultation, but is offered as a community education service. Advice on individual problems should be obtained directly from a professional.
Copyright, 1994. Richard E. Gans, M.D.
Last Modified: August 23, 1996