There are a variety of ways in which ophthalmologists classify cataracts. In general, the primary criterion for evaluating types of cataracts is location in the eye’s lens. However, cataracts can also be identified according to their origin.
Nuclear sclerotic cataracts form in the center of the eye’s lens and affect your ability to see far away objects. This is the most common type of cataract and is generally the result of aging. Cortical cataracts develop at the outer rim of the lens and gradually make their way towards the center. They resemble spokes of a wheel and are most commonly found in diabetics. Posterior subcapsular cataracts develop in the back of the lens, resulting in glare and blurred vision. They progress more rapidly than the other types of cataracts and generally occur in diabetics and steroid users.
While the vast majority of cataracts are age-related, they may also be attributed to the following origins:
- Secondary cataracts (typically developing after undergoing eye surgery)
- Traumatic cataracts (caused by trauma or injury to the eye)
- Congenital cataracts (developing at birth)
- Radiation cataracts (very rare, generally caused by ultraviolet radiation)
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