9. Partes ollo/ FUNCIONAMENTO / ENFERMIDADES

9.5. CATARATAS

As cataratas son debidas a que a lente se nubla. Normalmente afecta a personas maiores, e incluso a mascotas vellas. A diabete incrementa o risco de cataratas. Pode ocorrer en un ou os dous ollos. Cando as lentes se nublan a visión é borrosa e pérdese a visión da cor. Finalmente a cegueira é completa no ollo afetado.

Cataracts

A cataract is a clouding of the lens. They often affect older people, and even older pets. Diabetes increases the risk of cataracts. They can develop in one or both eyes. As the lens gets cloudy the vision becomes blurred and colour vision is lost. Eventually the person will become completely blind in the affected eye. 

Cataracts can be treated relatively simply – the cloudy lens is removed by surgery and replaced with a clear plastic lens. Most people then need to wear glasses for reading as the replacement lens is usually for distant vision. 

Sometimes babies are born with cataracts. If these are removed within the first few weeks of life, the child will be able to see.