Cataracts, the clouding of the lenses in the eyes, can develop due to aging or diseases such as diabetes. Cataract removal is one of the most commonly performed surgeries in the United States. According to AllAboutCataracts.com, cataract symptoms can recur months to years after surgery in 20 to 40 percent of treated people. However, the cataracts don't actually regrow; rather, the capsule that holds the lens in place becomes clouded. Symptoms of posterior capsule opacification (PCO), or secondary cataracts, are similar to those of cataracts.
Cloudy Vision
For many people, the first sign of secondary cataract development is a feeling that their vision is cloudy or blurry, often described as a constant need to clean their glasses. Treatment for secondary cataracts is a procedure called YAG laser capsulotomy. YAG is short for yttrium aluminum garnet, the type of laser used for the procedure. According to the National Eye Institute, a small hole is made with a laser in the capsule, and the procedure takes only a few minutes.
Decreased Visual Acuity
A change in visual acuity as shown by a decreased ability to read an eye chart occurs when a secondary cataract develops. It may be difficult to read fine print or to see things at a distance. Vision on the Snellen eye test of less than 20/40 when using corrective lenses is considered significant enough to consider correction of the secondary cataract with YAG.
Halos and Glare
People who develop posterior capsular opacification complain of glare, especially at night. Halos may be seen around objects, especially lights. Night-driving vision may be significantly decreased.
