Surgical Eye Diseases Flashcards Preview

RUSVM Large Animal Surgery > Surgical Eye Diseases > Flashcards

Flashcards in Surgical Eye Diseases Deck (12)
Loading flashcards...
1
Q

What is the causative agent for pink eye in cattle?

A

Moraxella bovis

2
Q

The image below shows a __________ antibiotic injection for treatment of Moraxella bovis

A

transpalpebral subconjunctival

3
Q

The most common tumor in cattle is:

A

Squamous cell carcinoma

Most common tumor in cattle, occurs throughout the world, affects mostly older cattle

4
Q

Bovine ocular squamous cell carcinoma is commonly referred to as:

A

Cancer eye

5
Q

Squamous cell carcinoma is heritable in what cattle breed?

A

Hereford​

6
Q

What procedure is being performed here?

A

Superficial keratectomy​

7
Q

When using hyperthermia as a treatment for small circumscribed tumors, you must reach a temperature of _____ for _____ seconds to kill tumor cells

A

When using hyperthermia as a treatment for small circumscribed tumors, you must reach a temperature of 50˚C for 30 seconds to kill tumor cells

8
Q

What procedure is being performed here?

A

Radiofrequency hyperthermia​

9
Q

In order to use cryosurgery as an effective tumor treatment, the tumor must be less than _____ mm

A

50 mm (aka 5cm)

  • Best is a double freeze/thaw cycle
  • Freeze at -25˚C
  • Freeze 0.2 – 0,4 cm of normal tissue around the tumor
10
Q

Removal of the entire orbital content is called:

A

Exenteration​

11
Q

A Peterson block blocks the __________ nerve

A

Optic​

12
Q

What two local blocks are commonly used to block the optic nerve?

A

Peterson and Retrobulbar​