La córnea es la capa transparente en la parte frontal del ojo. Protege su ojo del polvo y los gérmenes y ayuda a filtrar los dañinos rayos ultravioletas, o UV. La córnea también ayuda a enfocar la luz que entra a su ojo. La córnea está hecha de proteínas fuertes, pero puede lastimarse. Una cortadura o un rasguño leves, llamados abrasiones, suelen ser algo menor. Pero una abrasión fuerte o una punción en la córnea pueden ser cosas muy graves, y pueden afectarle la visión. Constituyen emergencias médicas.
If you have pain around the eyes, headaches, and blurred vision after using a computer for several hours, you may have computer vision syndrome. You can ease symptoms with special computer glasses. Watch this video for additional details about this condition and tips on computer use.
A cataract is a clouding of the natural lens within the eye that often occurs as a person ages. Although many cataracts develop without a known cause, long-term steroid use and diabetes are risk factors. Watch this video to find out what you can expect if you develop a cataract.
A clear lens in the eye focuses light. This lets the eye see images sharply. With age, the lens slowly becomes cloudy. The cloudy lens is a cataract. A cataract scatters light and makes it hard for the eye to focus.
