I took my first dose of lisinopril/hydrochlorothiazide last nite. My vision is blurry today. Is this related?

Blurry vision, drug. Effects of blood pressure drugs can affect the eyes, but the ones you are on are probably due to the positional change on your blood pressure such as a feeling of lightheaded upon standing. These are usually short term but report to your prescribing doctor asa dose adjustment might be needed.