Ocular Testing of Autonomic System Damage (M2) Flashcards Preview

I. Neuroanatomy > Ocular Testing of Autonomic System Damage (M2) > Flashcards

Flashcards in Ocular Testing of Autonomic System Damage (M2) Deck (19)
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1
Q

What are examples of sympathomimetics?

A

phenylepherine, cocaine, hydroxyamphetamine, alphagan aproclonidine

2
Q

What percentage is phenylepherine used in optometry? 1. What is its mechanism? 2

A
  1. 2.5%

2. alpha agonist (direct)

3
Q

What are examples of parasympathomimetics?

A

pilocarpine

4
Q

What is pilocarpine used to treat?

A

glaucoma

5
Q

What are examples of sympatholytics?

A

timolol

6
Q

What is the mechanism of timolol? 1. What is it used to treat? 2

A
  1. selective beta blocker

2. glaucoma

7
Q

What are examples of parasympatholytics?

A
  1. tropicamide (1%)
  2. cyclopentolate (1%)
  3. atropine
8
Q

What is the strongest cycloplegic? 1. What is it used to treat? 2

A
  1. atropine

2. amblyopia (put in non-amblyopic eye)

9
Q

Which parasympatholytic works better on the sphincter? 1. On ciliary body? 2

A
  1. tropicamide

2. cyclopentolate

10
Q

If there is damage to the sympathetic system to the eye what is the result in the pupil?

A

miosis

11
Q

If there is damage to the parasympathetic system to the eye what is the result in the pupil?

A

mydriasis

12
Q

If a patient has Horners and cocaine (10%) is applied will there be mydriasis?

A

no

13
Q

If a patient has Horners and aproclonidine is applied will there be mydriasis?

A

yes

14
Q

If a patient has Horners and hydroxyamphetamine is applied and the eye dilates then where is the paresis?

A

central or preganglionic oculosympathetic paresis

15
Q

If a patient has Horners and phenylepherine (1%) is applied and the eye dilates then where is the paresis?

A

postganglionic oculosympathetic paresis

16
Q

How long must a lesion be present for aproclonidine to detect it? 1. When do you never use aproclonidine? 2

A
  1. 36 hours

2. on infants

17
Q

What is the mechanism of pilocarpine?

A

direct acting muscarinic (M3) agonist

18
Q

What causes dennervation hypersensitivity so the pupil will constrict to heavily diluted pilocarpine?

A

Adies

19
Q

With CN III compression, will the pupil constrict to dilute pilocarpine?

A

No, only 1% pilo