If you have a cataract it means the natural lens in your eye is cloudy. In a cataract operation your surgeon will remove the cloudy lens and put an artificial clear lens in its place.Your lens sits behind the coloured part of your eye (the iris) and helps you to see things in focus.
When you look at something, light comes into your eye through the hole in the centre (the pupil) and passes through the lens to the back of the eyeball (the retina).The light is then changed into nerve signals that travel to your brain. Your brain tells you what the image is.
If the lens is cloudy, the image on the back of the eye will be blurred. Its rather like looking through a dirty windscreen or frosted glass.Different parts of the lens can become cloudy. Commonly cataracts begin as clouding around the edges of the lens.
You may notice that you get a lot of glare or a halo effect around bright lights, or when the sun is low in the sky. If you drive you might find oncoming headlights more difficult to cope with than before. Cataracts can also affect the middle of the lens, which makes your vision foggy.As the cataract grows:your sight becomes blurry;you may have double...
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