<unk> , also known as age-related<unk>  (AMD or ARMD), is a medical condition which may result in blurred or no vision in the center of the visual field. Early on there are often no symptoms. Over time, however, some people experience a gradual worsening of vision that may affect one or both eyes. While it does not result in complete blindness, loss of central vision can make it hard to recognize faces, drive, read, or perform other activities of daily life. Visual hallucinations may also occur but these do not represent a mental illness.<unk>  typically occurs in older people. Genetic factors and smoking also play a role. It is due to damage to the macula of the retina. Diagnosis is by a complete eye exam. The severity is divided into early, intermediate, and late types. The late type is additionally divided into "dry" and "wet" forms with the dry form making up 90% of cases. There are two main types of AMD: Dry form and Wet form. The difference between these two forms is the change of macula. People with dry form AMD will have few small drusen in their macula which will gradually lead to damage of light-sensitive cells and loss of vision. While people with wet form AMD, blood vessels grow underneath their macula which leads to the leakage of blood and fluid into their retina. Preventive efforts include exercising, eating well, and not smoking. There is no cure or treatment that returns vision already lost. In the wet form, anti-VEGF medication injected into the eye or less commonly laser coagulation or photodynamic therapy may slow worsening. Antioxidant vitamins and minerals do not appear to be useful for prevention. However, dietary supplements may slow the progression in those who already have the disease. Age-related<unk>  is a main cause of central blindness among the working-aged population worldwide. As of 2020, it affects more than 190 million people globally with the prevalence expected to increase to 288 million people by 2040 as the proportion of elderly persons in the population increases. It is equally seen in males and females and it is more common in those of European or North American ancestry. In 2013 it was the fourth most common cause of blindness after cataracts, preterm birth, and glaucoma. It most commonly occurs in people over the age of fifty and in the United States is the most common cause of vision loss in this age group. About 0.4% of people between 50 and 60 have the disease, while it occurs in 0.7% of people 60 to 70, 2.3% of those 70 to 80, and nearly 12% of people over 80 years old.
Macular degeneration
Optic disc drusen
Macular scarring
Retinal degeneration 
Retinal vasculitis
Macular corneal dystrophy
Autoimmune optic neuropathy
Corneal neovascularization