age related macular degeneration 4 (MONDO_0012540) is any age-related macular degeneration in which the cause of the disease is a mutation in the CFH gene. Also known as: ARMD4, CFH age-related macular degeneration, age related macular degeneration type 4, age-related macular degeneration caused by mutation in CFH, macular Degeneration, age-related, type 4.