Keyboards with braille symbols, braille books, and books on audio tape are also available. Side effects depend on the treatments used. Antibiotics may cause allergic reactions and stomach upset. Medications for glaucoma may cause stinging, blurred vision, eye redness, changes in heart rate, and headaches . Surgery carries a risk of bleeding, infection, and allergic reactions to anesthesia .
Treatment depends on the cause of the visual impairment.
If the visual impairments improve, a person may or may not need further treatment. For example, those with glaucoma need additional treatment and monitoring even if their vision improves. People who are nearsighted may be able to wear glasses or contacts to improve their eyesight and may need no further treatment. Also, the affected person should be told when someone leaves or enters the area. The sighted person should alert the person when they are coming near steps, curbs, or other obstacles.