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mydriasis and mydriatic drugs.

hellew. Two of my lecture pages are contradicting eachother. I shall type the exact words it says.
on one lecture page it says:-
"dilator pupillae - smooth muscle arranged radially- stimulation of sympathetic fibres---> contraction of radial muscle---->dilation of pupil = mydriasis.
but on another lecture page it says:-
Mydriatic drugs
Muscarinic antagonist
atropine (tropicamide) - passive mydriasis (loss of mitotic drive to constrictor pupillae)

is mydriasis the dilation of pupil or the constriction on pupil?
Reply 1
Avatar for Revenged
Revenged
15
Parasympathetic innervation constricts pupil (occulomotor nerve)...

Blockade of parasympathetic innervation (by atropine) dilates pupil...

This is passive dilation (passive mydriasis)...

HTH
Reply 2
Avatar for Da Mouse
Da Mouse
OP
3
:redface: sorry :s:
HTH?
DILATION of the pupillae
Reply 4
Avatar for Jpw1097
Jpw1097
19
Original post by Patrick maina
DILATION of the pupillae


You are aware this thread is almost 11 years old?

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