What is Charles Bonnet syndrome?

Charles Bonnet syndrome (CBS) is a common condition among people who have lost their sight. It causes people who have lost a lot of vision to see things that aren't really there, known as visual hallucinations.

People who have CBS may have lost a lot of their vision from an eye condition, such as age-related macular degenerationcataractglaucoma or diabetic eye disease. Many of these conditions are more common in older people so many people who have CBS are older. However, anyone of any age, including children, may develop this condition as any eye condition that causes sight loss can trigger CBS.

We have a leaflet, part of our Understanding series, on Charles Bonnet syndrome:

If the customer needs advice about their eye condition please refer them to the Eye Health Information Service on:

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