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Coats of the Eyeball Anatomy

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Questions and Answers

What is the result of obstruction to the draining of the aqueous humor?

Presbyopia
Blindness
Glaucoma (correct)
Spherical aberration

What is the function of the aqueous humor in the eye?

To nourish the retina
To magnify the image
To converge the eyes
To support the wall of the eyeball and maintain its optical shape (correct)

What is the shape of the lens in the eye?

Cylindrical
Biconvex (correct)
Oval
Globular

What happens to the lens with advancing age?

It becomes denser and less elastic (B) Signup and view all the answers

What is the function of the ciliary muscle in the eye?

To contract and allow the lens to assume a more globular shape (C) Signup and view all the answers

What is the function of the cornea?

It is responsible for refraction and has a refractive index of 1.38 (B) Signup and view all the answers

What is the function of the ciliary muscle?

It increases the refractive power of the lens (D) Signup and view all the answers

What is the purpose of the macula lutea?

It is the area of most distinct vision (B) Signup and view all the answers

What is the function of the aqueous humor?

It fills the anterior and posterior chambers of the eyeball (D) Signup and view all the answers

What is the purpose of the blind spot?

It is insensitive to light and is located on the medial side of the macula (B) Signup and view all the answers