cataract surgery
Cataracts can affect your vision in different ways:
The most common symptoms of cataract are:
- Cloudy, fuzzy vision
- Glare around headlights or dazzle in bright daylight
- Poor nighttime vision
- Double images
- A frequent alteration of glasses or contact lenses
Clumps of protein reduce the sharpness of the image reaching the retina. The lens consists mostly of water and protein. When the protein clumps up, it clouds the lens and reduces the light that reaches the retina. The clouding may become severe enough to cause blurred vision. When a cataract is mild, the cloudiness affects only a small part of the lens. You may not notice any changes in your vision.
Cataracts tend to develop slowly, so vision gets worse gradually as the clear lens slowly changes to a yellowish/brownish color, adding a brownish tint to vision. Over time, increased tinting may make it more difficult to read and perform other routine activities. This gradual change in tinting doesn’t affect the sharpness of the image.
If you have advanced lens discoloration, you may not be able to identify blues and purples. As your lens ages, the central part can age more quickly than the outer, leading to a gradual change in optical power. Some people will become increasingly short sighted (myopic, minus powered) due to this effect termed 'index myopia'. Often people will have had several changes in their glasses over a short period of say a year before this gets noticed.
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