ocular injury

Question 1

A client phones your practice and says her dog has received a chemical injury to its right eye. What is your advice?
Select one:
a.Lavage the eye with saline (eg for contact lenses) for 10 minutes
b Come straight in
c.Book the next routine appointment
d.Lavage the eye with tap water for 30 minutes

Answer 1

d.Lavage the eye with tap water for 30 minutes

Question 2

What is the prognosis for vision in a proptosed eye?
Select one:
a.80%
b.50%
c.20%
d.0%

Answer 2

c.20%

Question 3

The most common sites for globe rupture in the dog following blunt trauma are:
Select one:
a.Limbus and globe equator
b.Central cornea and limbus
c.Limbus and posterior pole
d.Posterior pole and adjacent to optic nerve head

Answer 3

d.Posterior pole and adjacent to optic nerve head

Question 4

A 'giant retinal tear' is defined as a retinal tear that is greater than:
Select one:
a.1 clock hour
b.2 clock hours
c.4 clock hours
d.6 clock hours

Answer 4

b.2 clock hours

Question 5

Lacerations of the lower nasolacrimal canaliculus
Select one:
a.Do not need repair (only the upper canaliculus needs repair if lacerated)
b.Require repair by suturing of tissue adjacent to lacerated ends of the canaliculus
c.Require repair by direct suturing of the lacerated ends of the canaliculus
d.Require repair by application of tissue glue to lacerated ends of the canaliculus

Answer 5

b.Require repair by suturing of tissue adjacent to lacerated ends of the canaliculus

Question 6

Siderosis bulbi is associated with an intraocular foreign body composed of:
Select one:
a.Copper
b.Iron
c.Steel
d.Lead

Answer 6

b.Iron

Question 7

Septic implantation syndrome refers to:
Select one:
a.Microbial contamination of the orbit
b.Microbial contamination of the lens
c.Microbial contamination of the vitreous
d.Microbial contamination of the anterior chamber

Answer 7

b.Microbial contamination of the lens

Question 8

Dishwasher detergents are:
Select one:
a.Alcoholic
b.Acidic
c.Neutral
d.Alkaline

Answer 8

d.Alkaline

Question 9

what are the 2 pathways by which alkaline agents cause damage

Answer 9

1. Saponification of triglycerides in cell membranes (causing lysis of the cells).
2. Denaturation and hydrolysis of proteins causing loss of (secondary, tertiary, and quaternary) structure as well as transport proteins and enzymes resulting
   in cell death.