Eye diseases
Your best defense is to have regular check ups, because eye diseases do not always have symptoms. Early detection and treatment could prevent visual loss.
There are some excellent websites that cover this topic in great detail.
www.healthline.com/health/eye-health is an excellent resource for 56 of the most common eye disorders.
www.nlm.nih.gov is another.
There are live links to these sites and others on our links page.