The cornea is the clear, dome-shaped, front part of the eye that covers the iris, pupil, and anterior chamber . The cornea is transparent and provides most of the eye's optical power. When someone wears glasses for a refractive error (farsightedness, nearsightedness, and/or an astigmatism), this is caused by the shape of the cornea.
The cornea is only about 1/2 millimeter thick and is comprised of five known layers: epithelium, Bowman's membrane, stroma, Descemet's membrane, and the endothelium. Each layer performs a different function to protect the eye and provide focusing power.
Some ophthalmologists have undergone an additional one to two years of in-depth training called a fellowship in one of the main subspecialty areas of the eye, such as the cornea. These physicians are classified as subspecialists.
Dr. D. Shawn Parker is the corneal specialist at Eye Care Specialists. He diagnoses and treats diseases and injuries of the cornea, such as keratoconus, infections, corneal abrasions, and Fuchs' dystrophy as well as other diseases affecting the front parts of the eye, including the eyelid. Dr. Parker also performs surgical procedures including corneal transplants, keratoplasty, and refractive surgery such as LASIK or cataract surgery.