Aniseikonia is the term given to the magnified vision in the eye.

chronic inflammation of the cornea; development of tiny blood vessels in the eye; scarring; loss of vision; glaucoma

The best score for an eye vision test is 20/20, which states pretty much that you have perfect vision.

vision

The medical term for an underdeveloped eye is "microphthalmia." This condition can occur during development in the womb and may result in a smaller than normal eye size. It can sometimes be associated with other eye abnormalities or vision impairments.