Why are babies nearsighted?

Factual Questions
1

Yesterday, we had my children participate in an eye study for Johns Hopkins University School of Public Health. My older boy, 11 years old, has 20/16 vision, and the eight-month-old baby boy is far-sighted. We were told that it’s completely normal for babies to be far-sighted, and as he ages his vision will get better. His prescription is +4, whereas mine, near-sighted at -3.5 and -3.25, is pretty bad.

Can someone explain to me why far-sighted is ‘normal’ for babies? Thank you.

2

Their eyes are slightly smaller than those of an adult, but the lens is still normal strength(lens power is based upon proportion, not physical size) so the lens is focusing the image at a point behind the retina, AKA far-sightedness.

3

Thank you!