What condition is characterized by dryness of the conjunctiva due to decreased lacrimal function?

The condition characterized by dryness of the conjunctiva due to decreased lacrimal function is keratoconjunctivitis. This condition, often referred to as dry eye syndrome, occurs when the eyes do not produce enough tears or when the tears evaporate too quickly, leading to dryness and inflammation of the conjunctiva. The conjunctiva is a thin, transparent membrane that covers the white part of the eyeball and the inner surface of the eyelids.

In keratoconjunctivitis, the decrease in lacrimal function can result from several factors, such as age, autoimmune diseases like Sjögren's syndrome, or side effects of certain medications. This condition not only causes discomfort and irritation but can also lead to more serious complications if left untreated, such as corneal damage.

Keratoconjunctivitis is a pivotal recognition in ophthalmology as it highlights the crucial role of tear production in maintaining ocular surface health. Understanding this condition can help in diagnosing and implementing appropriate treatments to restore moisture and comfort to the eyes.