Corneal staining isn’t a disease, it’s a sign of abrasions to your cornea, the outer surface tissue of your eyes. Abrasions can have different causes, including wearing contact lenses or if something ...

Corneal cross-linking is a treatment for an eye problem called keratoconus. In this condition, the front part of your eye, called the cornea, thins out and gets weaker over time. This makes it bulge ...

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 ...

This story is part of a series on the current progression in Regenerative Medicine. This piece is part of a series dedicated to the eye and improvements in restoring vision. In 1999, I defined ...

Corneal edema is swelling of the cornea — the clear, dome-shaped outer surface of the eye that helps you see clearly. It’s caused by fluid buildup in the cornea. When untreated, corneal edema can lead ...

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 ...