While contact lenses are safely used by millions of people every day, they can carry a significant risk of eye infection. The most common infection related to contact lens use is infective keratitis. Prompt diagnosis and treatment of infective keratitis is necessary to avoid permanent visual loss from complications such as corneal scarring. Treatment, depending on the offending organism involved, involves the use of antibacterial, antifungal, or antiviral eye drops, or in some cases, oral or intravenous medications.
The retina is a layer of nerve lines at the back of the eye. A network of tiny blood vessels supplies blood to the retina. The retina becomes damaged when blood vessels leaks, become blocked or grow haphazardly due to persistent high blood sugar. Diabetic retinopathy is damage to the retina caused by complications of insufficient diabetic control. It affects blood vessels in the light-sensitive tissue called the retina that lines the back of the eye. It is the most common cause of vision loss among people with diabetes and the leading cause of vision impairment and blindness among working-age adults.