What condition is characterized by a decrease in tear production?

Dry eye syndrome is characterized by a decrease in tear production, which leads to discomfort and irritation in the eyes. This condition can result from a variety of factors including age, hormonal changes, certain medications, and environmental conditions. It makes it difficult for the eyes to maintain a healthy tear film, which is essential for lubrication, providing nutrients, and protecting against infections.

In contrast, conjunctivitis primarily involves inflammation of the conjunctiva and may not necessarily relate to tear production but could involve increased tear discharge. Uveitis is an inflammation within the eye, affecting the uveal tract, and is not directly linked to tear production. Glaucoma is a condition that affects the optic nerve and is often associated with increased intraocular pressure, but it does not involve a decrease in tear production. Therefore, the unique association of decreased tear production with dry eye syndrome makes it the correct answer.