Final answer:
Ischemic optic neuropathy is the ocular disease associated with blindness after hypotension, as it results from insufficient blood flow to the optic nerve.
Step-by-step explanation:
The ocular disease associated with blindness after hypotension is Ischemic optic neuropathy. This condition occurs when there is a sudden and persistent drop in blood pressure, which leads to inadequate blood flow to the optic nerve, resulting in vision loss. Unlike glaucoma, which is caused by a buildup of pressure due to blocked fluid circulation in the eye, Ischemic optic neuropathy is directly related to blood flow issues. Age-related macular degeneration (AMD) is the most common cause of blindness in the Western hemisphere, but it is not specifically related to hypotension. Conditions like meningitis can cause swelling around the optic nerve and potentially lead to vision loss, but the root cause is infection and inflammation, not hypotension.