Which of the following defect results due to the shortening of the eyeball from the front to the back?

Hyperopia/hypermetropia is a condition in which there is a difficulty in seeing nearer objects. This defect results in the shortening of the eyeball from front to back or flattening of the lens.
Myopia - This defect results when the eyeball is lengthened from the front to the back or the lens is too curved.
Presbyopia - This defect results when the lens loses its flexibility.
Cataract is a condition in which the lens turns opaque.