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Medical researchers at the University of Alberta have unlocked part of the mystery underlying a childhood eye disease. New research shows how children with some types of glaucoma end up with missing or extra pieces of DNA. The missing or extra bits of DNA are called copy number variations (CNVs). The U of A research team had previously shown how they play a major role in causing some types of pediatric glaucoma - a disease that can lead to blindness.

Nearly half of all diabetics have some form of diabetic retinopathy, and diabetes is the leading cause of new cases of blindness in adults 20-74 years of age.

The rate of new cases of diagnosed diabetes rose by more than 90 percent among adults over the last 10 years, according to a study by the Centers for Disease Control and Prevention (CDC).

Reuters - A study released today suggests that children with "exotropia type" strabismus -- a visual defect in which the eyes are misaligned and turn outward - may be at increased risk for developing mental illness by young adulthood.