Ocular Exam

Small animal tech skills

What is the actual name for the 3rd eyelid

Nictitating Membrane

What % of the tears are produced by the 3rd eyelid?

35-40%

What structures form the limbus?

The junction of the sclera and iris

What does the ciliary body produce?

Aqueous humor

What are the 5 layers of the cornea

epithelial, bowmans, stroma, descemet, endothelium

What layer’s cells can regenerate?

Epithelial

What makes up 90% of the thickness of the cornea

stroma

What separates the cornea from the anterior portion of the eye?

Endothelium

Which layer will fluorescein stain uptake occur if there is a disruption in the layer?

Stroma

What are the signs of ocular pain?

Squinting, tearing, pawing at eye, rubbing the face, sensitivity to light, redness of sclera, blepharospasm (rapid blinking)

You have a 3 week old puppy in the clinic. You check for a menace response and it does not have one. Is this normal or abnormal?

Normal, it is absent until 12 weeks

What does hyphema mean?

Blood in the eye, bleeding from in the front of the eye between the cornea and the iris

What is the difference in a cataract and lenticular sclerosis?

Lenticular sclerosis is normal with age and cataracts are triggered by diabetes

What is the normal value for a Schirmer tear test in a dog?

15mm/min

What is the normal tear test value in a cat?

5mm/min

What is the anesthetic that we use in the eye?

Proparacaine

What is the name of the medication that will dilate the eye?

Tropicamide

What is the normal IOP range in dogs and cats?

10-20 mmHg

There should not be a difference greater than ______ between each eye.

5 mmHg

What endocrine disease is related to cataracts?

Diabetes

When applying both an ointment and a solution in the eye, which goes first?

The solution then the ointment. The ointment will not let the solution penetrate the eye