Question

chapter 15 multiple choice question 6
1 part -- of 1 point
2 tries
the elasticity of the lens decreases with age. this leads to which of the following?
less accommodation of the lenses and difficulty focusing on nearby objects
a clouding of the lenses known as a cataract
lowered accommodation of the pupillary reflex and blurry vision
less light getting to the retina and diminished visual acuity

Explanation:

To solve this, we analyze each option:

• Option 1: Lens accommodation (ability to change shape for focus) relies on elasticity. Reduced elasticity with age (presbyopia) causes less accommodation, making near - object focusing hard. This matches the effect of decreased lens elasticity.
• Option 2: Cataracts are due to lens protein changes, not elasticity loss. Eliminate.
• Option 3: Pupillary reflex (pupil size change) is not related to lens elasticity. Eliminate.
• Option 4: Light reaching retina is about pupil size or lens transparency (not elasticity - related). Eliminate.

Answer:

less accommodation of the lenses and difficulty focusing on nearby objects