Where There Is No Doctor:Spots or `Flies' Before the Eyes (Mouches Volantes)

Sometimes Has risk factor::older persons complain of Has symptom::small moving spots when they look at a bright surface (wall, sky). The spots move when the eyes move and look like tiny flies. These spots are usually harmless and need no treatment. But if they appear suddenly in large numbers and Has serious symptom::vision begins to fail from one side, this could be a medical emergency (Is symptom of::detached retina). Has treatment::Seek medical help at once if spots appear in large numbers.