Ocular Cholinergic Agonists and Antagonists
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Questions and Answers

What is the lethal dosage of Atropine in adults?

  • 100mg (correct)
  • 500mg
  • 50mg
  • 200mg

What is the antidote for Atropine overdose?

  • Scopolamine
  • Cyclopentolate
  • Physostigmine (correct)
  • Homatropine

What is the potency of Homatropine compared to Atropine?

  • 10 times more potent than Atropine
  • Equal potency to Atropine
  • 1/10 as potent as Atropine (correct)
  • Half as potent as Atropine

What is the primary use of Scopolamine?

<p>As an alternative to Atropine in allergic patients (A)</p> Signup and view all the answers

What is the duration of Cyclopentolate's mydriatic and cycloplegic effect?

<p>Less than 24 hours (B)</p> Signup and view all the answers

What is a common central nervous system effect of Cyclopentolate?

<p>Drowsiness (A)</p> Signup and view all the answers

What is the commercial concentration of Tropicamide?

<p>0.5% and 1.0% (D)</p> Signup and view all the answers

What is the clinical use of Tropicamide?

<p>Dilated fundus examination (B)</p> Signup and view all the answers

What is a common ocular side effect of Atropine?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary difference between Atropine and Homatropine?

<p>Potency (C)</p> Signup and view all the answers

Where does the efferent oculo-parasympathetic pathway originate?

<p>E-W nucleus (B)</p> Signup and view all the answers

What is the neurotransmitter for both pre and post-ganglionic synapses?

<p>Acetylcholine (B)</p> Signup and view all the answers

What is the name of the membrane-bound device used to deliver Pilocarpine?

<p>Ocusertpilo-40 (C)</p> Signup and view all the answers

What is the mechanism of indirect Parasympathomimetics?

<p>Blocking the breakdown of acetylcholine (C)</p> Signup and view all the answers

What is the name of the autoimmune disorder that affects voltage-gated calcium channels?

<p>Lambert-Eaton Myasthenic Syndrome (A)</p> Signup and view all the answers

What is the name of the ocular cholinergic antagonist mentioned in the text?

<p>Atropine (B)</p> Signup and view all the answers

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