Optics of the Eye -- SC lenses

Question 1

what can V=U+P be applied to with spherocylindrical lenses?

Answer 1

can be applied to each meridian

Question 2

remember: x means ______, and is where there is ______ power.

Answer 2

axis meridian, no

Question 3

Simple myopic astigmatism

Answer 3

one line image focused on retina, other focused in front of retina (overpowered)

Question 4

Simple hyperopic astigmatism

Answer 4

one line image focused on retina, other focused behind retina (underpowered)

Question 5

compound myopic astigmatism

Answer 5

both line images focused in front of retina

Question 6

compound hyperopic astigmatism

Answer 6

both line images focused behind retina

Question 7

mixed astigmatism

Answer 7

one line image focused in front of retina, other focused behind, with circle of least confusion NOT at retina

Question 8

equal mixed astigmatism

Answer 8

one line image focused in front of retina, other focused behind, with circle of least confusion at retina