Accommodation and Vision Quiz

What is the process of accommodation?

• A reflex that changes the refractive power of the lens

• A technique to improve color vision

• A process that changes the shape of the cornea

• A method to adjust the size of the pupil

Which parts of the eye are important for the process of accommodation?

• Retina and optic nerve

• Cornea and lens

• Lens and iris

• Cornea and retina

What is the role of the ciliary muscles?

• To focus light on the optic nerve

• To adjust the curvature of the cornea

• To control the shape of the lens

• To control the size of the pupil

Where must light be focused for clear vision?

• On the optic nerve

• On the fovea

• On the lens

• On the cornea

What happens to the lens when looking at a nearby object?

• It moves closer to the cornea

• It becomes short and fat

• It becomes flat and thin

• It moves away from the retina

What do suspensory ligaments do when the ciliary muscle contracts?

• They become tight

• They slacken

• They contract

• They relax

How does the lens change when looking at distant objects?

• It moves away from the cornea

• It moves closer to the retina

• It becomes less curved

• It becomes more curved

What is the medical term for long-sightedness?

• Myopia

• Astigmatism

• Presbyopia

• Hyperopia

What type of lens is used to correct long-sightedness?

• Concave lens

• Cylindrical lens

• Bifocal lens

• Convex lens

What happens to the ciliary muscle when looking at a nearby object?

• It contracts

• It becomes taut

• It relaxes

• It moves away from the lens