Cataracts Surgery: It’s The Most Common Vision Operation in the U.K.

Hearing that you need any kind of surgery can be alarming and leave you bracing yourself for a stay in hospital. However, if you or an elderly relative needs an operation to remove a cataract, you'll be relieved to know that it is usually carried out under local anaesthetic and done in under 20 minutes. This means that you can be treated as a day patient, although you can be given sedation. If you need cataracts treated in both eyes, it will usually be done on separate occasions. Cataracts are quite common in older people, although it may sometimes occur in younger patients as well. They can appear as early as your forties, although it can be a long time before they actually affect your vision. It should be noted that left untreated, cataracts can lead to blindness.
http://eyecliniclondon.com/2016/03/04/cataracts-surgery-its-the-most-common-vision-operation-in-the-uk/