<prompt> Which of the following is not useful in chronic open angle glaucoma:Prostagladin analoguePilocarpineHomatropineTimolol  <response>: Ans. C: Homatropine Medical therapy for primary open angle glaucoma includes: 1st line-Beta blockers timolol, brimonidine, prostaglandin analogues; Adjunctive-Dipivefrine, dorzolamide, pilocarpine 