Contact Lenses
Extended wear contact lenses are made of materials that allow greater permeability of:
A. water
B. oxygen
C. carbon dioxide
D. proteins
B. oxygen
The swelling of the optic disc with engorged blood vessels is known as:
A. papilledema
B. endophthalmitis
C. optic nerve compression
D. anterior ischemic optic neuropathy
A. papilledema
Which of the following is a sign?
A. A black speck in the field of vison
B. Complaints of difficulty reading
C. Double vision
D. A shallow anterior chamber
D. A shallow anterior chamber
Evisceration is the:
A. surgical removal of the contents of the globe.
B. abnormal turning of the eye outward.
C. tendency of the eye to turn inward.
D. turning outward of the eyelid.
A. surgical removal of the contents of the globe.
The name of the oil-secreting glands found in the posterior margin of the eyelid is the:
A. gland of Moll.
B. gland of Wolfring.
C. lacrimal gland.
D. Meibomian gland.
D. Meibomian gland
Almost all patients who enter the ophthalmologist's office require a determination of what status regarding their eyes?
A. Diabetic retinopathy
B. Glaucoma
C. Refractive error
D. Strabismus
C. Refractive error
What is a cycloplegic that is ideal for office use because it is relatively weak and is primarily used for its dilating ability?
A. Tropicamide
B. Phenylephrine
C. Cyclopentolate
D. Atropine
A. Tropicamide
What drug is used during tonometry to anesthetize the eye?
A. Proparacaine
B. Paredrine
C. Phenylephrine
D. Tropicamide
A. Proparacaine
Daily wear contact lenses should be removed each night or patients are at a greater risk of developing what condition?
A. Detached retina
B. Shallow anterior chamber
C. Corneal edema
D. Giant papillary conjunctivitis
C. Corneal edema
What eye disorder reveals a constricted pupil and keratic percipitates?
A. Iritis
B. Conjuntiva
C. Episcleritis
D. Keratoconus
A. Iritis
A patient who wears contact lenses has had a red eye for two days. How should this patient be triaged?
A. Schedule routinely within 1 month.
B. Schedule at your office within 1 week.
C. Send immediately to the nearest emergency room.
D. Schedule at your clinic as an urgent add-in within 24 hours.
D. Schedule at your clinic as an urgent add-on within 24 hours.
A latent deviation that can only be observed when binocular fusion is disrupted is called a(n):
A. tropia
B. hemianopia
C. phoria
D. ametropia
C. phoria
What is the name of the condition where a fibrovascular growth forms on the conjunctiva to a portion of the cornea?
A. Pterygium
B. Pinguecula
C. Exenteration
D. Entropion
A. Pterygium
What is the term for the condition where the crystalline lens of the eye or its capsule, or both, becomes opaque, with consequent loss of visual acuity?
A. Neuritis
B. Hyphemia
C. Angioma
D. Cataract
D. Cataract
What cycloplegic agent procedures the longest lasting effect?
A. Homatropine
B. Atropine Sulfate
C. Tropicamide
D. Cyclopentolate
B. Atropine Sulfate
Stereoacuity testing is indicated if a patient has:
A. retinitis.
B. a phoria.
C. a chalazion.
D. hyperplasia.
B. a phoria.
Changing the base curve of a contact lens changes the fitting characteristics of that lens due to a change in sagittal depth. Increasing the base curve radius of a contact lens while maintaining the same diameter will cause the lens to fit:
A. steeper and tighter.
B. flatter and looser.
C. higher and tighter.
D. lower and looser.
B. flatter and looser.
Aqueous humor drains out into the:
A. Canal of Schlemm
B. ciliary body
C. iris
D. uveal tract
A. Canal of Schlemm
Which of the following organisms is likely to cause a corneal ulcer?
A. Adenovirus
B. Pneumococcus
C. Herpes simplex virus
D. Staphylococcus aureus
C. Herpes simplex virus
Dioptric power of the cornea is determined by what type of reading?
A. Ultrasonography
B. Keratometry
C. Tonometry
D. Tomography
B. Keratometry
The three-color receptors found in cones are:
A. blue, green, and yellow.
B. red, green, and blue.
C. red, green, and yellow.
D. red, yellow, and blue.
B. red, green, and blue.
If an ophthalmologist states that a patient's condition is "OU", this means that the condition is present in:
A. neither eye.
B. the left eye.
C. the right eye.
D. both eyes.
D. both eyes.
Which of the following organisms is MOST likely to cause a dendritic corneal ulcer?
A. Adenovirus
B. Herpes simplex virus
C. Pneumococcus
D. Staphylococcus aureus
B. Herpes simplex virus
Evaluating the range and symmetry of motion of both eyes together is known as:
A. ductions.
B. versions.
C. phorias.
D. tropias.
B. versions.
Spectacle blur is unclear vision associated with:
A. changing from an old spectacle prescription to a new one.
B. changing from contacts to spectacles.
C. changing from spectacles to contacts.
D. spasm of accommodation.
B. changing from contacts to spectacles.
Inflammation of the tear sac associated with faulty tear drainage is:
A. trichiasis
B. blepharitis
C. conjunctivitis
D. dacryocystitis
D. dacryocystitis
A condition in which blood has settled in the bottom half of the anterior chamber of the eye is called a(n):
A. erythema.
B. hematoma.
C. hyphema.
D. hypopyon.
C. hyphema
Color vision defects may be:
A. refractive.
B. subjective.
C. congenital or acquired.
D. more common in women.
C. congenital or acquired.
What is measured during the Schirmer testing?
A. Tear production
B. Corneal thickness
C. Pupillary reflexes
D. Corneal curvature
A. Tear production
Calibration of the applanation tonometer is checked by:
A. a qualified service technician.
B. using a measured weight attached to the tonometer balancing arm at 0,2, and 6.
C. using a measured weight attached to the tonometer balancing arm at 0,3, and 5.
D. having a second technician verify the IOP measurements on several patients to confirm tonometry accuracy.
B. using a measured weight attached to the tonometer balancing arm at 0,2, and 6.
A. Constriction of the pupil
B. Reduction in the amount of aqueous
C. Reduction in the amount of aqueous formed by the ciliary body
D. Increased rate of flow of aqueous through the trabecular meshwork
C. Reduction in the amount of aqueous formed by the ciliary body
Which tool is a series of red cylinders to assess phoria?
A. Worth four-dot
B. Ishihara plates
C. Maddox rod
D. Marcus Gunn
C. Maddox rod
What is a contraindication to contact lens wear?
A. Seizure disorders
B. Strabismus as a child
C. High blood pressure
D. Cataracts
A. Seizure disorders
A non-contact lens used to exam the macula is a:
A. goniolens.
B. Hruby lens.
C. Koeppe lens.
D. Maddox lens.
B. Hruby lens
Which patient symptom would require the MOST immediate attention?
A. Double vision for less than a week
B. Lid swelling for less than 3 weeks
C. Blurred vision for more than a week
D. Progressive vision loss over the last 3 months
A. Double vision for less than a week
What is the name of the condition where both the globe and ocular tissue are missing?
A. Anophthalmia
B. Anisocoria
C. Buphthalmos
D. Cytinosis
A. Anophthalmia
The denominator in the visual acuity recording of a low vision patient is:
A. equal to the numerator.
B. the same for both eyes.
C. larger than for the patient with normal visual acuity.
D. smaller than for a patient with normal visual acuity.
C. larger than for the patient with normal visual acuity.
What is a possible side effect of Ampicillin?
A. Anaphylactic reaction
B. Colitis
C. Kidney damage
D. Renal damage
A. Anaphylactic reaction
What is the MOST prevalent cell type in a scraping from allergic conjunctivitis?
A. Basophils
B. Eosinophils
C. Lymphocytes
D. Neutrophils
B. Eosinophils
Which test uses prisms to center the corneal reflex?
A. Hess
B. Worth four-dot
C. Hirschberg
D. Krimsky
D. Krimsky