A powerful cycloplegia is:: (A) Atropine, (B) Tropicomide, (C) Phenylephrine, (D) Homatropine
Answer is A. (Atorpine) (147-Parson 20th)* Atorpine - is the most potent and has longest duration of action (for 7 days or more)* Homatropine - are less potent. It affects lasts for 4-5 days* Tropicamide - short acting, though effective for upto 3 hours.* Phenylephrine - a selective alpha - 1 - agonist, sympathomimetics.