Nearsightedness, Farsightedness, Astigmatism and Presbyopia
An
ideal eye has perfect near and distance vision. This means
that the cornea (the front surface of the eye) and lens (located in
the middle of the eye) focus objects clearly onto the retina (the
part of the eye that processes vision).
An
ideal eye has perfect near and distance vision. This means
that the cornea (the front surface of the eye) and lens (located in
the middle of the eye) focus objects clearly onto the retina (the
part of the eye that processes vision). 
