Humans and animals sometimes suffer from an eye condition known as cataracts. This common problem tends to occur as we age. Behind the pupil and iris, clouding can appear. Over time, the cloudy obstruction will increase. Some patients experience cataracts at different levels, which determine how much the problem impairs vision. Minimal clouding will only slightly impair vision while significant clouding can lead to total blindness.

Classifying the Cataract

There are three classifications of cataracts. A cortical cataract is found on in the lens cortex and is commonly found in patients with diabetes. A nuclear cataract begins at the lens’ center and tends to appear as we age. The third classification is the subcapsular cataract which forms along the back of the lens. This type is more likely to appear in patients with diabetes as well as those that are prescribed large quantities of steroids.

Causes of Cataracts

Although we are not certain what causes cataracts, there are a few theories. Some experts believe that ultraviolet light, such as that given off by the sun, can cause them. Sunglasses or other sun-obstructing head gear can help reduce the risk of ultraviolet light exposure on eyes.  Diabetes has proven to be another common factor.

Certain medications are also suspect when a cataract develops. Regular use of steroids, diuretics and some tranquilizers are another potential cause some experts point to. Nothing has been proven, but there is speculation that some relationship exists between cataract development and certain medications.

Hopefully, the future will present more specific answers to our search for a cataract cause. Most cases must be reviewed individually to see what underlying factors may be at the root of the condition. In the meantime, many people deal with this vision impairment problem every day.