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The Eyes Have It Multiple Choice Quiz | 10 Questions

The eye is considered by many to be our most important sense organ. What do you know about the structure, function and examination of the eye.

A multiple-choice quiz by golfer46. Estimated time: 4 mins.

Author
golfer46

Time
4 mins

Type
Multiple Choice

Quiz #
374,350

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
5 / 10

Plays
354

Awards
Top 35% Quiz

One at a Time - Single Page - Timed Game

Question 1 of 10

1. What is the most common disease affecting the health of the optic nerve? Hint

Glaucoma

Multiple sclerosis

Cataract

Diabetes

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Question 2 of 10

2. What pigment is found in the iris that determines eye color? Hint

Melanin

Xanthophyll

Chromaphore

Lutein

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Question 3 of 10

3. Your eye doctor tells you that you are suffering from proptosis. What does he mean? Hint

You have a parasite

You need glasses for reading

Your eyes are bulging

You have blood shot eyes

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Question 4 of 10

4. How many muscles control the movement of the eye? Hint

Seven

Four

Six

Five

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Question 5 of 10

5. What eye tissue can be transplanted? Hint

Retina

Iris

Optic nerve

Cornea

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Question 6 of 10

6. What is a cataract? Hint

A clouding of the cornea of the the eye

A clouding of the aqueus humor of the eye

A clouding of the vitreous of the eye

A clouding of the crystalline lens of the eye

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Question 7 of 10

7. What is the name of the hand held optical instrument that can be used to determine the refractive error in the eye? Hint

Exophthalmometer

Lensometer

Retinoscope

Ophthalmoscope

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Question 8 of 10

8. In order of dioptric power, what two parts of the eye are responsible for focusing images onto the retina?
Hint

Cornea and lens

Cornea and pupil

Lens and cornea

Lens and pupil

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Question 9 of 10

9. Why is the vascular part of the eye called the uvea? Hint

it looks like a cherry

it looks like a grape

it looks like a strawberry

it looks like a blackberry

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Question 10 of 10

10. What eye disease is treated with a phacoemulsifier? Hint

Cataract

Corneal scars

Vitreous hemorrhage

Floaters

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Quiz Answer Key and Fun Facts

1. What is the most common disease affecting the health of the optic nerve?

Answer: Glaucoma

The optic nerve is a cable made up of 1 million separate fibers. Glaucoma is a disease that causes damage to the optic nerve with abnormally high intraocular pressures. The most common type of glaucoma is called chronic open angle and is treated most commonly with drops. The second most common type is narrow angle glaucoma and is most commonly treated by laser iridotomy.

2. What pigment is found in the iris that determines eye color?

Answer: Melanin

Lighter skinned populations have less pigment and therefore are more likely to have blue eyes while darker pigmented populations are more likely to have dark brown irises. It is interesting that the pupils of darker pigmented populations take longer to dilate than those of fair skinned people.

3. Your eye doctor tells you that you are suffering from proptosis. What does he mean?

Answer: Your eyes are bulging

The most common cause is hyperthyroidism. The excess thyroid hormone stimulates the sympathetic nervous system and causes a widening of the lid fissures. Orbital tumors can also be a cause pushing the eyeball forward from the orbital space.

4. How many muscles control the movement of the eye?

Answer: Six

There are four recti muscles. Inferior, superior, lateral and medial in each eye. These four muscles control horizontal, up and downward gaze. There are two oblique muscles in each eye and they control torsional movement of the eyes.

5. What eye tissue can be transplanted?

Answer: Cornea

Corneal transplantation is the most successful of all the organ transplant procedures. The typical need in organ transplantation for ABO blood type compatibility is not a factor in the transplantation of the cornea because no blood vessels are involved.

6. What is a cataract?

Answer: A clouding of the crystalline lens of the eye

Cataract surgery is the most common surgery performed in the USA (over 3 million/year). It is the most common cause of curable blindness in the world.

7. What is the name of the hand held optical instrument that can be used to determine the refractive error in the eye?

Answer: Retinoscope

The motion of a streak of light from the retinoscope reflecting off the red reflex of the retina through a trial lens is used objectively to determine the approximate power of the correction needed for distance vision. The phoropter then subjectively fine tunes the prescription for the spectacles.

8. In order of dioptric power, what two parts of the eye are responsible for focusing images onto the retina?

Answer: Cornea and lens

The cornea controls 2/3 of the focusing power and the lens 1/3. The lens can change its power by accommodating (changing its shape). The cornea's power is static.

9. Why is the vascular part of the eye called the uvea?

Answer: it looks like a grape

When early Greek anatomists dissected the white sclera free from the internal blood supply it appeared grapelike. The Greek word for grape is uvea. The uvea is made up of the iris, ciliary body and choroid, all very vascular.

10. What eye disease is treated with a phacoemulsifier?

Answer: Cataract

Dr. Charles Kelman introduced phacoemulsification in 1967. An ultrasound vibrating tip emulsifies the cataract and aspirates the emulsification through a tiny incision. This innovation reduces risk and discomfort as well as speed of recovery in cataract surgery. Phaco is the Greek word for bean. A cataract looked like a bean to the dissectionists of ancient Greece.

Source: Author golfer46

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