What shape is the eyeball when both near and farsightedness exist?

Question

When nearsightedness (myopia) exists in an individual, the eyeball is said to be elongated so that the image appears in front of the retina, causing blur in distant images.

When farsightedness (hypermetropia) exists in an individual, the eyeball is said to be flattened so that the image appears behind of the retina, so that near images appear blurry.

Some people have both myopia and hypermetropia simultaneously--what shape do their eyeballs take?

Answer 1

you need to consider the condition of the retina.

Answer 2

The only way that you can have an eyeball which is simultaneously too long and too short is to have astigmatism.

Answer 3

It is not uncommon for people to have one eyeball elongated (myopia) meaning near-sighted (can only see things near) and one eyeball flattened (hyperopia or hypermetropia, same thing) or far sighted.

An astigmatism is blurry vision caused by an irregularly shaped cornea.

Having myopia in one eye and hyperopia in the other is correctable with regular glasses, etc.  An astigmatism is also correctable with eye glasses.  Lasik surgery can now correct for all (I had it done and ... it's great!)