Atropine is substituted by phenylephrine to facilitate fundus examination when?
Correct Answer: Mydriasis required without cycloplagia
Description: Ans. is 'a' i.e., Mydriasis required without cycloplagia o Anticholinergic drugs (atropine) cause i) Mydriasis ii) Paralysis of ciliary muscles (cycloplegia) o Adrenergic drugs (phenylephrine) cause i) Mydriasis ii) Has no action on ciliary smooth muscles --> no cycloplegia For fundoscopy only mydriasis is required (no cycloplegia is required) --> Phenylephrine is preferred over atropine.
Category:
Pharmacology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now