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A Journey into the Eye Trivia Quiz

Some miscellaneous trivia to those familiar with the marvellous organ of sight, the eye.

A multiple-choice quiz by napkintosh. Estimated time: 5 mins.

Author
napkintosh

Time
5 mins

Type
Multiple Choice

Quiz #
3,019

Updated
Jul 23 22

# Qns
10

Difficulty
Tough

Avg Score
5 / 10

Plays
4751

Awards
Top 35% Quiz

Last 3 plays: superhooppete (1/10), Maybeline5 (10/10), Guest 47 (1/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. The three concentric layers comprising the globe are known as what? Hint

Coats

Tunics

Orbital Layers

Ciliary Zonules

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Question 2 of 10

2. The only purpose of the sclera is to: Hint

Improve visual acuity

Maintain the shape of the globe

Refract light onto the retina

Help the iris adjust to ambient light

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Question 3 of 10

3. In accommodation, what changes the shape of the lens? Hint

Choroid

Iris

Ciliary body

Uvea

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Question 4 of 10

4. A decrease in the magnitude of accommodation due to the hardening of the lens substance is called what? Hint

Glaucoma

Amblyopia

Presbyopia

Deuteranopia

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Question 5 of 10

5. The most acute visual area on the retina is called what? Hint

Fovea centralis

Macula densa

White Spot

Foramen magnum

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Question 6 of 10

6. In myopia, what is the shape of the globe in comparison to a normal one? Hint

It is longer

It is wider

It is shorter

It is larger

7. In osteogenesis imperfecta type II, a rare disease in which the bones do not develop normally and are subject to frequent fractures, a discoloration of the sclera is often noted. What color is it? Hint

Clear

Blue

Yellow

Deep red

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Question 8 of 10

8. To be considered legally blind in the United States, one's vision has to be worse than what measurement even with corrective lenses? Hint

20 over 800

20 over 2000

20 over 200

20 over 400

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Question 9 of 10

9. Heterochromia irides is often the result of an accident, genetics, or what rare disorder which also causes premature greying of the hair, partial cochleal deafness, and white eyebrows and forelock? Hint

Waardenburg Syndrome

Oculocutaneous melanocytosis

Aarskog-Scott Syndrome

Albinism

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Question 10 of 10

10. The medical term for colorblindness in which everything is seen in varying shades of grey is what? Hint

Deuteranopia

Monochromatism

Amblyopia

Griseofulvin

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Most Recent Scores

Nov 12 2024 : superhooppete: 1/10
Oct 23 2024 : Maybeline5: 10/10
Sep 24 2024 : Guest 47: 1/10

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Quiz Answer Key and Fun Facts

1. The three concentric layers comprising the globe are known as what?

Answer: Tunics

2. The only purpose of the sclera is to:

Answer: Maintain the shape of the globe

Although the sclera comprises 70 percent of the globe, since it is opaque it serves no optical purpose other than to maintain the shape of the globe.

3. In accommodation, what changes the shape of the lens?

Answer: Ciliary body

The ciliary body also produces the aqueous humor that fills the front chamber of the eye and helps to refract and filter the light entering it.

4. A decrease in the magnitude of accommodation due to the hardening of the lens substance is called what?

Answer: Presbyopia

Amblyopia is more commonly known as 'lazy eye,' deuteranopia is another term for red-green colorblindness, and glaucoma is a hardening of the globe caused by increased intraocular pressure.

5. The most acute visual area on the retina is called what?

Answer: Fovea centralis

The white spot is another name for the blind spot, the macula densa is a group of modified epithelial cells in the kidney, and the foramen magnum is an opening in the skull where the spinal cord passes through to the medulla oblongata.

6. In myopia, what is the shape of the globe in comparison to a normal one?

Answer: It is longer

Myopia is nearsightedness.

Answer: Blue

8. To be considered legally blind in the United States, one's vision has to be worse than what measurement even with corrective lenses?

Answer: 20 over 200

According to the American Optometric Association website (http://aoa.org/eweb/DynamicPage.aspx?site=AOAstage&WebCode=LowVision), "any person with vision that cannot be corrected to better than 20/200 in the best eye, or who has 20 degrees or less of visual field remaining, is considered legally blind." Thanks goes to rredder for pointing this out to me.

Answer: Waardenburg Syndrome

10. The medical term for colorblindness in which everything is seen in varying shades of grey is what?

Answer: Monochromatism

Although similar, monochromatism is seeing everything is shades of grey and achromatopsia is seeing everything in white, grey, and black.

Source: Author napkintosh

This quiz was reviewed by FunTrivia editor crisw before going online.
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