the focal length of the eye lens being too long, or the eyeball being too small
complete absence of a lens
excessive curvature only, never eyeball size
Answer
the focal length of the eye lens being too long, or the eyeball being too small
Detailed Explanation
The chapter states hypermetropia arises either because the focal length of the eye lens is too long, or because the eyeball has become too small. — Examisthan.com