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An illustration of Charles Bonnet syndrome. Thanks to Jeremy Webb Photography

Charles Bonnet syndrome

Charles Bonnet syndrome (CBS) causes people who have lost a lot of sight to see things that aren’t real (hallucinations).

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Become a Retina UK member

Join the Retina UK membership today! Anyone is welcome to join; whether you are living with a sight loss condition yourself, related to somebody who is, or if you are working as a sight loss professional.

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Since we were founded in 1976, we have invested more than £16.5million into some of the most pioneering medical research - because of amazing supporters like you.

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Please get in touch with us using the method which suits you best. You'll find details of all of the different ways you can contact us on this page.

Types of genetic testing

This page explains the different types of genetic tests: diagnostic testing, predictive testing, carrier testing and research testing

Funding paves the way for achromatopsia

A research project funded by Retina UK helped pave the way to a new gene therapy that has recently produced encouraging results in two young people with achromatopsia, a condition that causes complete colour-blindness and poor overall vision from birth.