Which adverse effect is associated with diuretic therapy and can involve the eyes?

• A. Blurred vision
• B. Photophobia
• C. Floaters
• D. Dry Eyes

Answer: (D)

The main idea here is that diuretic medications can cause systemic dehydration, and this can show up in the eyes as dry eye. When body fluids are reduced, tear production and tear film stability can diminish, leading to a gritty, irritated, and dry sensation on the ocular surface. This dryness can also transiently affect vision because an unstable tear film blurs the surface of the cornea. Other eye symptoms like photophobia or floaters aren’t the typical direct effects of diuretics, and blurred vision is less specific than the dry-eye presentation linked to dehydration from diuretic use.