Cataracts occur as a natural function of time. It is a clouding of the natural crystalline lens. The result over time is that of generalized blurry vision.
A cataract is a clouding of the natural crystalline lens. There are many types and causes of cataracts, and cataract removal is a highly effective and safe procedure.
Causes of Cataracts
Cataracts develop from a variety of reasons, including long term exposure to UV light and radiation, as secondary effects of such medical conditions as diabetes and hypertension, as a side effect of certain medications such as steroids, and as a result of an ocular injury. A person may also be born with congenital cataracts. But the most common cause of cataracts is advanced age.
As we age, the proteins that make up our lenses break down and bind together in clusters that obscure the lens. This process progressively impairs vision as the affected area becomes larger and larger.
Types of Cataracts
In general, there are three types of cataracts:
A subcapsular cataract begins at the back of the lens. People with diabetes, high hyperopia (farsightedness), or those taking steroids may develop a subcapsular cataract.
A nuclear cataract is the most common type and forms in the nucleus, the center of the lens, due to advanced aging.
A cortical cataract forms in the lens cortex, and gradually extends its spokes from the outside to the center. People with diabetes may develop cortical cataracts.
Signs and Symptoms of Cataracts
As cataracts develop, vision becomes cloudy and there is a gradual loss of
visual acuity.
Contrast sensitivity and color vision are also affected, and glare can be problematic as light is scattered by the cataract into the eye. In the early stages of cataract formation, you may require more frequent changes in your glasses prescription as cataracts alter your vision.
If you suspect that you may be developing cataracts, consult a
cataract surgeon for a diagnosis and
treatment options.