Corneal degeneration refers to a group of eye disorders that affect the cornea, the clear front part of the eye. This condition can lead to changes in the cornea's structure, causing vision problems. Common types include keratoconus, where the cornea thins and bulges, and arcus senilis, characterized by a gray or white ring around the cornea, often related to aging. Symptoms of corneal degeneration may include blurred vision, sensitivity to light, and discomfort. Treatment options vary depending on the type and severity of the degeneration, ranging from glasses or contact lenses to surgical procedures like corneal transplant in more advanced cases.