University:
Michigan State University
Course:
PHM 809 | Drug Discover and Medicinal Chemistry
Academic year:

2019
Views:

142

Pages:

3
Author:

kundgetanufv

Mydriatics Lecture Outline; • what is mydriasis? • how is pupillary size controlled? • what are mydriatic agents? • how do they work (mode of action)? • when do we use them? • different types of mydriatic agents • adverse reactions and contra-indications to mydriasis • what must an Optometrist do? • communication, pre-tests, gaining consent, advice Mydriatics What is mydriasis; Mydriasis: the maximum dilation of the pupil with abolition of the light reflex Mydriatics What controls the pupil size? (Innervation of the iris); • The pupillary diameter (or iris size) is controlled by two muscles; • Sphincter Pupillae: primarily controlled by the parasympathetic nervous system • Dilator Pupillae: primarily controlled by the sympathetic nervous system • N.B. the dilator pupillae is weaker than the sphincter pupillae • Mydriasis: contraction of the dilator accompanied by the relaxation of the sphincter • Miosis: contraction of the sphincter accompanied by the relaxation of the dilator

Mydriatics Lecture

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