Retinal detachment is a kind of serious, common eye disease which can lead to blind. It mainly happens to people who are in strong prescription, have an injury of eyeball and the elderly. If your eyes appear the following symptoms, it can have a preliminary judgment which is retinal detachment: 1. it's fuzzy when you see something, or feel it is changing. 2. sometimes feeling that you are seeing a shadow like a layer of clouds from one side on your eyes to the central part of the vision. 3. Before retinal detachment, there were often illusion of spark and flash. If you have these symptoms, you'd better to go to the hospital at once, so that early detection and early treatment.