<prompt> 78 yr old male came to OPD with chief complaint of diminution of vision in both eyes. IOP in both eyes was 24 mm Hg and there was inferior notch seen in optic nerve head. On visual fields there was a paracentral scotoma. Which of the following is the drug of choice?LatanoprostTimololCarbonic anhydrase inhibitorBrimonidine  <response>: the clinical feature depicts the condition towards primary open angle glaucoma Latanoprost PG analogue is the drug of choice for primary open angle glaucoma. 