A person with short sight will be able to see things up close more clearly, like when they’re reading. But for tasks that require distance vision, like driving or watching TV, their vision is more blurred. Myopia occurs when the eye is effectively too long – so the distance between the cornea (the clear window at the front of the eye) and the retina (the light-sensitive tissue at the back of the eye) is too far. This means that light entering the eye is focused before it reaches the retina, which causes blurred vision.

In some cases, it could be due to the shape of the cornea, or the thickness of the lens inside the eye. Although there is not a cure for myopia, the good news is that it can easily be corrected with the use of glasses or contact lenses with a minus lens power, like -3.00. This means the lens has a concave shape (curved inwards), which helps to improve your focus.