Question

1. what is the main job of the ciliary muscles? a) send messages to brain b) focus the lens c) control pupil size d) protect the eye 18. if rods are damaged, what might someone struggle with? a) seeing in color b) seeing in dim light c) focusing objects d) controlling pupil size 19. if cones are damaged, what might someone struggle with? a) seeing black and white b) seeing in dim light c) seeing color and detail d) seeing shapes 20. which part of the eye is responsible for sharp central vision? a) rods b) cones c) retina d) iris

Explanation:

1. The ciliary muscles focus the lens.
2. Rods are responsible for vision in dim - light. If damaged, seeing in dim light is affected.
3. Cones are for color and detail vision. If damaged, seeing color and detail is affected.
4. Cones are responsible for sharp central vision.

Answer:

1. b. Focus the lens
2. c. Seeing in dim light
3. d. Seeing color and detail
4. b. Cones