Ophthalmic Surgery

Question 1

What retinal structure allows for perception of general shapes and shades of gray in dim light?

Answer 1

Rods

Question 2

A trephine is used in which ophthalmologic procedure?

Answer 2

keratoplasty

Question 3

Where is the lacrimal gland located?

Answer 3

upper lid, outer angle of the orbit

Question 4

What procedure done on an eye with internal malfunction or loss of contents and no possible recovery of sight provides better mobility and cosmetic results with a prosthetic eye?

Answer 4

evisceration

Question 5

What is the portion of the eye between the cornea and the iris in which aqueous fluid flows and nourishes tissues?

Answer 5

anterior chamber

Question 6

What is another name for a cystic structure caused by an inflammatory response to material trapped in a meibomian gland?

Answer 6

chalazion

Question 7

What of the following is an inward turning of the eyelid with resulting corneal irritation?

Answer 7

entropion

entropion, abnormal inversion of the lower lid margins, causes the eyelashes to rub against the cornea, resulting in irritation, pain, and chronic tears

Question 8

What passes through the canal of Schlemm?

Answer 8

aqueous humor

Question 9

Misalignment or deviation from coordinated movement of the eyes is:

Answer 9

strabismus

Question 10

What structure of the eye is colored and its muscles constrict or relax to control the amount of light entering the pupil?

Answer 10

iris

Question 11

What structure of the eye is the thin, transparent lining of the inner surface of the eyelid and covers the sclera?

Answer 11

conjunctiva

Question 12

What is the name of the gelatin-like fluid that fills the posterior cavity of the eye?

Answer 12

vitreous humor

Question 13

What is the term for the six muscles that provides movement of the eye?

Answer 13

extrinsic

Question 14

What structure is avascular, external, and its function is to refract light rays?

Answer 14

cornea

Question 15

Angular junction of eyelid at either corner of eye

Answer 15

Canthus

Question 16

Trochlear nerve (4)

Answer 16

controls superior oblique muscles

Question 17

Abducens nerve (6)

Answer 17

controls lateral rectus muscles

Question 18

Optic nerve (2)

Answer 18

carries visual information from the retina to the thalamus in the brain

Question 19

Facial nerve (7)

Answer 19

closes eye
control autonomic fibers including the lacrimal glands for tears

Question 20

Lesion can grow quite rapidly or may remain inactive for years.
Growth eventually adheres to the globe, the head thinning and flattening as it extends across the cornea towards the iris.

Answer 20

Pterygium

Question 21

produces a loss of peripheral vision or blind spots within the normal visual range

Answer 21

Glaucoma

Question 22

Far sightedness
light rays come to a focus behind the retina

Answer 22

Hyperopia

Question 23

Near sightedness
light rays come to a focus in front of the retina

Answer 23

Myopia

Question 24

What procedure is performed to open a blocked drainage system for tears?

Answer 24

dacryocystorhinostomy

Question 25

What procedure is used to treat retinal detachments?

Answer 25

Scleral buckle

Question 26

Rectus muscle shortened, best performed on lateral rectus

Answer 26

resection

Question 27

Rectus muscle lengthened, best performed on superior or inferior rectus

Answer 27

recession

Question 28

What is the term for “crossed eyes”?

Answer 28

esotropia

Question 29

What is the term for “wall eyes”?

Answer 29

exotropia