Deck 78: Medicines and the Eye

Question 1

Which one of the following drugs is used as an ocular astringent?

A) Polyvinyl alcohol
B) Zinc sulfate
C) Chlorhexidine acetate
D) Rose bengal

Answer 1

Zinc sulfate

Question 2

Trachoma is associated with:

A) a chlamydial eye infection.
B) an impairment of aqueous humour drainage.
C) a form of cancer that affects the eyeball.
D) an ingrowing eyelash.

Answer 2

a chlamydial eye infection.

Question 3

Which one of the following is an accessory structure of the eye?

A) Iris
B) Ciliary bodies
C) Lacrimal apparatus
D) Sclera

Answer 3

Lacrimal apparatus

Question 4

Visual accommodation results from:

A) sympathetic stimulation of the iris.
B) parasympathetic stimulation of the ciliary processes.
C) sympathetic stimulation of the lacrimal apparatus.
D) parasympathetic stimulation of the ciliary muscle.

Question 5

Factors that can affect the rate of topical drug absorption into the eyeball include all of the following EXCEPT:

A) the pH of the environment.
B) corneal integrity.
C) the age of the person.
D) blinking.

Question 6

Which of the following is a part of the vascular tunic?

A) The sclera
B) The iris
C) The central fovea
D) The extrinsic muscles

Question 7

Which oral medication can cause a disturbance in colour vision?

A)Digoxin
B)Chloroquine
C)Thimerosal
D)Azelastine

Question 8

Topical corticosteroids for use in inflammatory eye conditions should not be used for more than ________ week(s).

A) 1
B) 2
C) 3
D) 4

Question 9

Which is NOT an effective antibiotic for ophthalmic use?

A)Ciprofloxacin
B)Amoxicillin
C)Gentamicin
D)Sulfacetamide

Question 10

Which of the following is a drug group that is used in the treatment of glaucoma that decreases aqueous humour production?

A) Prostamides
B) Prostaglandins
C) Muscarinic agonists
D) β-blockers

Question 11

Drugs related to the antiviral agent aciclovir are used in the management of ophthalmic conditions such as:

A) trachoma.
B) CMV-induced retinitis.
C) Candida albicans infection.
D) purulent bacterial infections.

Question 12

The first-choice treatment for glaucoma is:

A) miotics.
B) β-blockers.
C) sympathomimetic agents.
D) diuretics

Question 13

Which eye preparation is used diagnostically?

A)Timolol
B)Fluorescein
C)Diclofenac
D)Fusidic acid

Question 14

One effect of parasympathetic stimulation of the eye is:

A) pupil dilation.
B) vasodilation.
C) relaxation for far vision.
D) increased production of aqueous humour.

Question 15

The site of administration of an intracameral injection would be:

A) directly under the conjunctival membrane.
B) into the posterior cavity.
C) into the anterior chamber.
D) behind the eyeball.

Question 16

Which one of the following drug groups is NOT currently used in the management of glaucoma?

A) Anticholinesterases
B) Prostaglandins
C) Diuretics
D) Prostamides

Question 17

For a drug to be absorbed into the eyeball through the cornea,it would need to be:

A) lipophilic only.
B) hydrophilic only.
C) hydrophobic only.
D) both lipophilic and hydrophilic.

Question 18

The middle layer of the eye is called the:

A) fibrous tunic.
B) sclera.
C) vascular tunic.
D) choroid.

Question 19

Which of the following drug groups can be used as mydriatic agents?

A) β-blockers
B) Prostaglandin analogues
C) Muscarinic agonists
D) α-adrenergic agonists

Question 20

Systemic absorption of eye drops can be prevented by:

A) waiting at least 10 minutes between administering drops.
B) tilting the head back during instillation.
C) closing the eye very slowly following instillation.
D) applying pressure to the tear duct immediately after instillation.

Question 21

Cycloplegia is a side effect of some ophthalmic drug treatments.It is defined as:

A) poor near vision.
B) pupil dilation.
C) pupil constriction.
D) an incomplete closure of the eyelids.

Question 22

Which one of the following reactions is NOT a common adverse reaction to topical application of ophthalmic drugs?

A) A stinging sensation
B) Altered colour vision
C) Oedema
D) A burning sensation

Question 23

Which of the following is NOT appropriate advice to offer an individual receiving verteporfin treatment?

A) As verteporfin can cause blurring or black spots, driving a car or operating machinery should be avoided.
B) Avoid skin and eye exposure to sunlight and to bright indoor light for 48 hours after treatment.
C) Remain in a darkened room when staying indoors.
D) Wear protective clothing and sunglasses at all times when going outside.

Question 24

Describe the pathophysiology of glaucoma.