Side effects depend on the treatments used. All medications have possible side effects. For example, medications used to control diabetes may cause liver damage or allergic reactions . Surgery carries a risk of bleeding, infection, or loss of vision. Contact lenses may irritate the eyes or result in eye infections.
Treatment varies according to the cause of the vision change.
After a person gets glasses for farsightedness, no further treatment is needed. People with diabetes or glaucoma usually need close monitoring and treatment for life. Macular degeneration usually causes vision to get worse over time. A person should tell the healthcare provider about any vision changes or responses to treatments. Repeat eye exams are advised for many causes of vision changes.