Have you ever noticed how many people around you wear glasses? Or do you know plenty of people who rely on contact lenses in order to be able to see clearly? The use of prescription correction solutions such as glasses and contact lenses are at an all-time high – a result of more people suffering from refractive eye errors than ever before. Refractive eye errors occur when there is an issue with the way that our eyes process the light that enters them. In someone with perfect vision, light is refracted through the eyes directly onto the retina, which receives the light and converts it into a signal that is sent to the brain via the optic nerve, telling us what we can see. When you have a refractive eye error, your cornea is an unusual shape, meaning that light is focused either in front of or behind the retina instead, causing the message sent through the optic nerve to be confused and vision to be blurred.