Specsavers

Astigmatism is a common visual condition caused by an irregularly shaped eye that leads to blurred vision and difficulty seeing at night.

If you’re long-sighted (also known as hyperopia), you’ll find that you can see objects far away clearly, but those close by will be out of focus.

Colour blindness is when someone has difficulty or cannot distinguish between certain colours, usually with shades of red, green, yellow and more rarely, blue.

Glaucoma is a group of eye diseases that damage the optic nerve.