The diameter of the eyeball in all people is the same: 24 mm

We are all born with a mass of individual attributes: height, weight, hair color, a unique pattern of fingerprints. Eye color is also unique, but the size of eyeballs - all adults with normal vision is the same - 24 mm - and can differ by only a few hundredths of a millimeter.

With the deterioration of changing the length of the axis of the inner eye: the myopic, it becomes longer (the eyeball is "pulled"), while the far-sighted - in short (eyeball "flattened"). Because of this shifting focus of converging rays: in the first case, it is in front of the retina, in the second - the back of it. By the way, myopic people are called "myopia", and far-sighted - "hyperopia».

via factroom.ru