Chapter 14, Problem 10MC

Label the parts of the eye:

Why do people over 55 often need reading glasses? Their cornea no longer focuses correctly Their lens no longer focuses correctly Their eyeball has elongated with age, causing images to focus in front of their retina Their retina has thinned with age, making vision more difficult.

Figure 36.18 Which of the following statements about the human eye is false? Rods detect color, while cones detect only shades of gray. When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye. The iris adjusts the amount of light coming into the eye. The cornea is a protective layer on the front of the eye.