The lens of the eyes focuses light on the retina. They also adjust the focus of the eyes, enabling us to see things clearly both at near and far distances.
The eye lenses are made up of water and protein. The protein in the eye lens is arranged in such a way that it keeps the lens clear so that light can pass through it. But, with increasing age in some cases the protein clump together and start clouding a small portion of the eye lens. With time, the clump grows and further clouds the lens causing difficulties in seeing.
There are three types of cataract:
- Nuclear Cataract: This type of cataract forms due to changes with age. It develops in the center of the lens.
- Cortical Cataract: This form of cataract develops in the lens cortex. It gradually spreads from the outside of the lens to its center. Many diabetic patients develop this form of cataract.
- Subcapsular cataract: This type of cataract begins at the back of the lens. Those people with diabetes, high farsightedness, retinitis pigmentosa are at a risk of developing this form of cataract.
The eye lenses contain a high concentration of glutathione which performs the function of an essential antioxidant to maintain the transparency of the tissues. Studies have suggested that the presence of a good level of glutathione can help to protect the eye lens and prevent the development of cataract.
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