Which symptom is typically associated with glaucoma?

The symptom typically associated with glaucoma is fixed and dilated pupils. Glaucoma is a group of eye diseases that typically result in increased intraocular pressure, leading to damage to the optic nerve and potential vision loss. In certain types of glaucoma, such as acute angle-closure glaucoma, a sudden increase in eye pressure can occur, leading to the classic presentation of fixed and dilated pupils. This occurs because the increase in pressure affects the muscles that control pupil size, preventing them from contracting and resulting in a dilated appearance.

Other symptoms of glaucoma may include blurred vision or difficulty seeing at night, but these are not as definitive as the presence of fixed and dilated pupils in the context of an acute glaucoma attack. Sudden vision loss can occur in advanced cases or due to specific incidents, but it is not a primary symptom of glaucoma itself. Thus, fixed and dilated pupils serve as a significant indicator of a glaucoma-related issue, particularly in emergent cases.