Notes

Slide Show

Outline

1
2
3
4
5
6
7	Menace response
8
9	Tracking Response (Cotton Ball Test)
10	Light Perception (Dazzle Response)
11	"Light Perception/Dazzle response" Light Perception/Dazzle response: sub cortical: Even decerebrate animals have blind reflex to light Mediated by a direct optic nerve afferent subcortical imput to the supraotic nuclei (ie hypothalamus) and superior colliculi. ►afferent fibers to facial nuclei.
12	Maze Testing If eye appears normal, or insignificant cataract – but owners report poor vision. Normal light Obstacles (chairs and cones) note if patient can negotiate Dark adaptation Obstacles (chairs and cones) note if patient can negotiate – Sensitive test for nyctalopia (night blindness)
13	Maze Testing
14	The ElectroRetinoGram (ERG) The only objective way to assess retinal function in animals. Commonly used: Pre-cataract surgery testing of retinal function. Retinal testing of purebred young dogs, which may be used for breeding. Diagnosis in sudden blindness (amaurosis).
15	The ElectroRetinoGram (ERG)
16	The ElectroRetinoGram (ERG)
17	The ElectroRetinoGram (ERG)
18	The ElectroRetinoGram (ERG)
19	The ElectroRetinoGram (ERG)
20
21
22	Pupillary Light Reflex
23	Anisocoria
24
25	Anisocoria
26	Symphathetic Innvervation
27
28	HORNER’S SYNDROME (sympathetic denervation)
29	HORNER’S SYNDROME (pharmacological testing)
30
31	Internal Ophthalmoplegia
32
33	Internal Ophthalmoplegia (pharmacological testing)
34	Internal Ophthalmoplegia
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52	Palpebral Reflex
53	Eyelid sensation
54	Palpebral Reflex
55	Corneal Reflex
56	Corneal Reflex
57	Neurotrophic (CN III) keratitis – vs neuroparalytic (CN VII) keratitis
58