Ophthalmology

Which cranial nerve is responsible for closing the eyelid?

• CN II

• CN III

• CN V

• CN VII

Which bone is NOT part of the equine orbit?

• Frontal bone

• Zygomatic bone

• Lacrimal bone

• Occipital bone

What is the name of the retinal vascular pattern in rabbits?

• Holangiotic

• Merangiotic

• Paurangiotic

• Anagionic

The condition of cilia arising from the meibomian gland, and emerging through the palpebral conjunctiva is called:

• blepharitis

• ankyloblepharon

• trichiasis

• ectopic cilia

• distichiasis

The most appropriate method for managing entropion in a 3 month old rottweiler is:

• Holz-Celsus surgery

• wedge resection

• medial canthoplasty

• cryotherapy

• eyelid tacking

The most common tumors affecting canine eyelids are malignant.

• True

• False

Answer explanation

Benign

Which one is the most common cause of keratoconjunctivitis sicca in dogs?

• Canine distemper virus

• Diabetes mellitus

• Immune-mediated disease

• Neurological dysfunction

Which of the following is not a possible clinical sign of keratoconjunctivitis sicca?

• Mucoid discharge

• Corneal ulceration

• Keratitis

• Epiphora

What test can be used to evaluate the patency of the nasolacrimal duct?

• Skull radiographs without contrast

• Jones test

• Tear film breakup time

• Schirmer tear test

Which of the following clinical signs is NOT typical in patients with orbital disease?

• Nystagmus

• Strabismus

• Exophthalmos

• Third eyelid protrusion