a person with an injury to the extrinsic muscles of the eye would find it difficult to

Please note that your school is not your School Subject.

Are these your choices?

A. Focus light onto the retina.
B. Interpret visual input.
C. Move the eyeball.
D. Control the amount of light entering the eye.

What do you think is the best answer?

a focus light onto the retina

I disagree. Check this site for your answer.

http://www.innerbody.com/image_nerv08/nerv104.html

the movement of the eyeball

Right! :-)

A person with an injury to the extrinsic muscles of the eye would find it difficult to properly move their eyeball. The extrinsic muscles of the eye, also known as the extraocular muscles, control the movement of the eyeball in different directions. There are six of these muscles, known as the lateral rectus, medial rectus, superior rectus, inferior rectus, superior oblique, and inferior oblique.

To understand why someone with an injury to these muscles would have difficulty, it's important to know how these muscles function. Each muscle is responsible for moving the eyeball in a specific direction. For example, the lateral rectus muscle moves the eye laterally (away from the nose), while the medial rectus moves the eye medially (towards the nose).

When these muscles are injured or impaired, it can result in limited or restricted eye movement. The person may have difficulty moving their eye in certain directions or experience restricted mobility. For instance, if the lateral rectus muscle is affected, moving the eye away from the nose could be challenging.

It's worth noting that injuries to the extrinsic muscles of the eye can occur due to trauma, neurological conditions, or other underlying causes. If you suspect an injury to these muscles, it is important to seek medical attention from an eye specialist or ophthalmologist who can properly diagnose and treat the condition.