Ocular Side Effects of Sympathomimetics

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What is the most common ocular side effect of Direct Sympathomimetics, such as Phenylephrine?

Lacrimation (correct)

Iris pigment drop out

Conjunctival hyperemia

Pupillary cysts

What is the percentage of patients who experience a rise in blood pressure with Direct Sympathomimetics, such as Phenylephrine?

5%

15%

20%

10% (correct)

What is the contraindication for Direct Sympathomimetics, such as Phenylephrine, in patients with a history of hyper-reaction?

Malignant hypertension

Hypertension

Parkinson's disease

Idiopathic hypotension (correct)

What is the mechanism of action of Direct Sympathomimetics, such as Phenylephrine, on conjunctival and iris vasculature?

Vasoconstriction and blood flow reduction Signup and view all the answers

What is the interaction between Direct Sympathomimetics, such as Phenylephrine, and Tricyclic antidepressants?

Enhanced cardiovascular effect Signup and view all the answers

What is the clinical use of Direct Sympathomimetics, such as Phenylephrine, in patients with narrow angles?

Caution in patients with narrow angles Signup and view all the answers

What is the approximate reduction in IOP caused by ophthalmic beta blockers?

20-22% Signup and view all the answers

Which of the following is a cardio-selective ophthalmic beta blocker?

Betaxolol Signup and view all the answers

What is the washout period for Timolol Maleate?

1-2 months Signup and view all the answers

Which of the following is a hydrosoluble substance?

Carteolol Signup and view all the answers

What is the maximum effect of Timolol Maleate achieved in?

3 weeks Signup and view all the answers

What is a unique feature of Carteolol?

Increases the ratio of high density lipids to total cholesterol Signup and view all the answers

What is a critical evaluation of the cocaine test in the diagnosis of Horner's syndrome?

Measuring the postcocaine anisocoria provides a better prediction of Horner's syndrome than calculating the net change in anisocoria. Signup and view all the answers

What is the indicative value of postcocaine anisocoria for Horner's syndrome?

0.8 mm Signup and view all the answers

What is the purpose of 1% hydroxyamphetamine dilation in the diagnosis of Horner's syndrome?

To diagnose 1st or 2nd order neuron Horner's syndrome Signup and view all the answers

What is the effect of 10% cocaine instillation on a mitotic pupil?

Normal dilation Signup and view all the answers

What is the mechanism of direct sympathomimetics like methyldopa?

Alpha 1 agonist Signup and view all the answers

What is the class of antidepressants that interacts with monoamine oxidase inhibitors?

Tricyclic Signup and view all the answers