Detachment of the retina happens more to middle aged, short sighted people. It is quite uncommon however 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.
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.
With early help, it may only be necessary to have laser or freezing treatment. This is usually performed under a local anaesthetic. Often however, an operation to repair the hole in the retina will be needed. This is usually done under a general anaesthetic and can be repaired in a single operation in 90% of cases. This does not usually cause pain, but the eye will be sore and swollen afterwards. The patient will usually need to stay in hospital for two or three days after the operation.
Information produced by the College of Optometrists
Link to the Royal College of Optometrists - Look after your eyes website
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.
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