An essential role of the cornea is to contribute to light focusing on the retina. Its curved shape, and therefore its ability to focus light, must be perfectly stable to ensure a sharp image despite ...

Your cornea is your eye’s clear, protective outer layer, sitting at the front like a car windshield. It acts like a barrier against dirt and germs, and it helps filter out some of the sun's damaging ...

Corneal dystrophies are a group of rare, genetic diseases that affect the cornea, the front part of your eye. There are more than 20 types, each with different symptoms. All cause a buildup of foreign ...

The cornea is a thin, transparent dome that covers your eye’s iris and pupil. A minor scratch of the cornea is called a corneal abrasion. Most corneal abrasions are minor and heal quickly. The iris is ...

At the front of the eye is a clear layer of tissue called the cornea. The cornea is like a window that lets light enter the eye. Tears defend the cornea against bacteria, viruses, and fungi. A corneal ...

A corneal abrasion is an eye injury caused by a scratch or scrape on the cornea’s surface. A person’s fingernails, contact lenses, or other foreign objects can all cause a corneal abrasion. The cornea ...