Chapter 25, Problem 54PP

Given that frogs are nearsighted in air, what is most likely to be true about their vision in water?

1. A.    They are even more nearsighted; because water has a higher index of refraction than air. a frog’s ability to focus light increases in water.
2. B.     They are less nearsighted because the cornea is less effective at refracting light in water than in air.
3. C.     Their vision is no different because only structures that are internal to the eye can affect the eye’s ability to focus.
4. D.    The images projected on the retina are no longer inverted because the eye in water functions as a diverging lens rather than a converging lens.