Understanding Vision and the Need for Glasses

What part of the eye is primarily responsible for detecting light?

• The retina

• The lens

• The pupil

• The cornea

Why do nearsighted individuals see distant objects as blurry?

• Their eyeball is too short, causing light to focus behind the retina.

• Their pupil is too small, limiting light entry.

• Their eyeball is too long, causing light to focus in front of the retina.

• Their lens is too thick, scattering the light.

How do glasses help nearsighted people see more clearly?

• By enlarging the pupil

• By increasing the amount of light entering the eye

• By focusing light directly on the retina

• By shortening the eyeball

What happens to light in the eye of a farsighted person?

• It scatters throughout the eye.

• It focuses directly on the retina.

• It focuses in front of the retina.

• It focuses behind the retina.

Why might a farsighted person hold a book farther away to read?

• To reduce the amount of light entering the eye

• To allow light to focus on the retina

• To increase the size of the text

• To decrease the angle of light entry