A new study has suggested that a simple eye test could be used to predict whether a person is at risk of having a stroke.

but it can affect other parts of your eye. To find out if you have uveitis, your doctor will do some tests. First, they'll have you read letters from an chart to test how clearly you can see.

But a new eye test being launched on the high street can detect 12 different health conditions - including high blood pressure, diabetes and potentially deadly tumours. The scan, called an optomap ...