What is Peters’ Anomaly? A condition where the centre of the cornea is hazy and white, obscuring vision.

What causes it? It can be genetic, but most cases occur by chance. It develops in the first 10 to 16 weeks of pregnancy.

How does it affect sight? It clouds vision as it affects the centre of the cornea. Trying to see will be like looking through frosted glass-light and dark shades and sometimes colours can be seen. Often hazy patches on the edge of the cornea will not affect vision, but Peters' Anomaly is in the centre. It can also cause lazy eyes.

What treatments are available? As well as cornea transplants, an operation that makes a hole in the iris may help. Dark glasses or contact lens can also help.

Are there any other effects? Sometimes Peters Plus Syndrome can occur. Children with this can suffer from a wide range of problems including dwarfism, cleft lip and palate and spine defects.