September 20, 2007
A Simple Guide To Cataract
What is a Cataract?
A cataract is a clouding of the eye's natural transparent lens, which helps us to focus on the objects we see.
The lens is mostly made of water and protein.
Due to age, some of the protein may clump together and start to cloud a small area of the lens. This is a cataract, and over time, it may grow larger and cloud more of the lens, making it harder to see.
What are the types of Cataract?
Cataracts are classified as one of three types:
1. A nuclear cataract is most commonly seen as it forms.
This cataract forms in the nucleus, the center of the lens, and is due to natural aging changes.
2. A cortical cataract, which forms in the outer lens cortex, gradually extends its spokes from the outside of the lens to the center. Many diabetics develop cortical cataracts.
3. A subcapsular cataract begins at the back of the lens. People with diabetes, high farsightedness, retinitis pigmentosa or those taking high doses of steroids may develop a subcapsular cataract.
What are the Symptoms and Signs of Cataract?
A cataract begins slowly and at first has little effect on your vision.
There may some blurring of vision .
Light from the sun or a lamp […]
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