Q. A 56-year-old man presents to your clinic with a complaint of blurry vision in his left eye. He reports that the vision in his left eye has been progressively worsening over the past few months and that he has also been experiencing some eye discomfort and headaches. The patient has a history of hypertension, but otherwise has no significant medical history. He takes lisinopril for his blood pressure and reports no other medications or allergies. On physical examination, his pupils are equal, round, and reactive to light and accommodation, extraocular movements are full and symmetrical, fundoscopic examination demonstrates cup-to-disc ratio of 0.8 in the left eye and 0.6 in the right eye, visual acuity is 20/40 in the right eye and 20/70 in the left eye, and intraocular pressure is 30 mm Hg in the left eye and 20 mm Hg in the right eye. Based on these findings, you consult with an ophthalmologist, and are advised the best therapeutic agent will act strictly on the proximal convoluted tubules to lower the osmotic gradient, and thereby facilitate diuresis and subsequently reduce intraocular pressure to improve optic perfusion pressure and reduce the risk of optic nerve ischaemia. The patient is also advised to follow up with the ophthalmologist in one week for further evaluation. Which of the following medications were you advised to prescribe?