What is retinal detachment?
Usually the retina is attached to the inner surface of the eye. If there is a tear or hole in the retina then fluid can get underneath. This weakens the attachment so that the retina becomes detached - rather like wallpaper peeling off a damp wall. When this happens the retina cannot compose a clear picture from the incoming rays and your vision becomes blurred and dim.
Who is more likely to suffer?
Detachment of the retina happens more to middle aged, short sighted people. However, it is quite uncommon and only about one person in ten thousand is affected. Very rarely, younger people can have a weakness of the retina, or it can be detached as a result of a blow to the head.
What are the symptoms?
The most common symptom is a shadow spreading across the vision of one eye. One may also experience bright flashes of light and/or showers of dark spots called floaters. These symptoms are never painful. Many people experience flashes or floaters and these are not necessarily a cause for alarm. However, if they are severe and seem to be getting worse, and/or vision is being lost, a doctor should be seen urgently. Prompt treatment can often minimise the damage to the eye.