Which symptom can be a result of tear gland dysfunction in Sjögren's syndrome?

Tear gland dysfunction in Sjögren's syndrome leads to reduced tear production, resulting in dry eyes, also known as xerophthalmia. This condition can manifest as photophobia, which is sensitivity to light. When the eyes lack adequate lubrication from tears, they become more susceptible to irritation, making exposure to bright light uncomfortable.

In contrast, night blindness is typically associated with retinal problems rather than tear production, while glaucoma involves increased intraocular pressure that is unrelated to the secretion of tears. Color blindness is a genetic condition affecting color perception that does not correlate with tear gland function. Therefore, photophobia is the most direct symptom linked to tear gland dysfunction in this autoimmune disorder.