Eye-General

Question 1

The fluid in the anterior portion of the eye (anterior to lens) is called?

Answer 1

Aqueous humor

Question 2

The fluid in the posterior/central portion of the eye (posterior to lens) is called?

Answer 2

Vitreous humor

Question 3

The “white” of the eye is referred to as?

Answer 3

Sclera

Question 4

Name all parts/layers of the eye from external to internal/posterior, in order:

Answer 4

1. Cornea
2. Anterior chamber
3. Iris
4. Pupil
5. Posterior chamber
6. Lens
7. Vitreous humor
8. Retina
9. Choroid
10. Sclera

Question 5

Aqueous humor is produced by what?

Answer 5

Ciliary body

Question 6

The muscle in the eyelids is?

Answer 6

Orbicularis oculi

Question 7

The main sensory nerve of the eye is?

Answer 7

Optic (CN II)

Question 8

The 3 cranial nerves providing muscular innervation to those that move the eye are?

Answer 8

CN III, IV, VI

Oculomotor, trochlear, abducens

Question 9

The trochlear nerve (CN IV) innervates what eye muscle?

Answer 9

Superior oblique

Question 10

The abducens nerve (CN VI) innervates what eye muscle?

Answer 10

Lateral rectus (ABductor)

Question 11

The “point of central focus” in the eye is known as?

Answer 11

Fovea centralis

Question 12

The fovea centralis is inside what structure?

Answer 12

Macula

Question 13

The primary visual cortex is located in what lobe of the brain?

Answer 13

Occipital lobe

Question 14

The most common vision problem?

Answer 14

Errors of refraction (difficulty focusing on far or near objects)

Question 15

Refraction means _______

Answer 15

Bending of light

Question 16

Myopia

Answer 16

Nearsightedness (can only see close objects clearly)

Question 17

Farsightedness

Answer 17

Hyperopia (inability to see close objects clearly)

Question 18

In myopia (nearsightedness), the light is focused ____ (anterior/posterior) to the retina, while in hyperopia it is focused _____

Answer 18

Anterior, posterior

Question 19

Farsightedness (hyperopia) caused by loss of elasticity of the lens, occurring typically in middle and old age

Answer 19

Presbyopia

Question 20

A defect in the eye or the lens caused by a deviation from spherical curvature, which results in distorted images, as light rays are prevented from meeting at a common focus. (Eye isn’t perfectly round)

Answer 20

Astigmatism