Cataracts, you may understand this to be a clouding of the eye that impairs or destroys vision. You may have heard about the surgeries that correct the condition. But did you know that not all cataracts are the same?
There are actually three primary types of cataract related to age: Nuclear Sclerotic, Cortical, and Posterior Subcapsular; the most common of these three is Nuclear Sclerotic cataracts.
A Nuclear Sclerotic cataract refers to the hardening of the nucleus, or the center, of the lens of the eye. In the early stages of this condition, the lens becomes cloudy and yellow before eventually hardening (sclerosis is the medical term for hardening). The hardening of the lens causes the eye to lose the ability to focus and the yellowing and clouding of the lens causes reduction or cessation of light entering the eye and so eventually leads to blindness.
Nuclear sclerotic cataracts are most typically age related and the symptoms may take years before they actually affect sight. Treatment for this condition would be to remove the affected lens and replace it with an artificial lens. Modern artificial lenses may even be bifocal type lenses.
A cortical cataract is a condition in which areas of white cloudiness will develop in the outer edges of the lens called the cortex spreading inward and having the appearance of a spoke wheel or a star pattern.
This condition scatters the light entering the eye and causing blurred vision, and glare, as well as difficulties in judging contrast and depth perception. Again, this condition may be corrected with surgery to replace the affected lens with an artificial lens. Persons with diabetes are most likely to be affected by this type of cataract.
Persons developing a Posterior Subcapsular cataract may begin to notice a glare or halo effect around lights and may also notice they are having difficulty reading. Persons taking steroids, or that have diabetes, or persons who suffer from extreme nearsightedness and/or