H11.142

Clinical Causes: Vitamin A deficiency – inadequate intake or absorption of vitamin A can lead to dryness of the conjunctiva. Environmental factors – prolonged exposure to dry, windy, or dusty environments. Chronic eye irritation or inflammation – due to allergies, infections, or irritants. Aging – natural decline in tear production with age. Systemic health conditions – such as Sjögren's syndrome or other autoimmune disorders. Use of certain medications – like antihistamines or antidepressants that reduce tear production. Ocular surface disorders – including dry eye syndrome from various causes. Exposure to ultraviolet light – excessive sunlight exposure can contribute to conjunctival changes.

Key Symptoms: Persistent dryness of the affected eye A gritty, sandy feeling in the eye Redness and irritation Sensitivity to light (photophobia) Blurry vision or fluctuating vision Itching or burning sensation Possible crusting or mucus discharge in severe cases

Diagnosis Path: Diagnosis typically involves a comprehensive eye examination by an eye care professional, including: - Slit-lamp examination to inspect the conjunctiva’s appearance. - Evaluation of tear production, possibly through Schirmer’s test. - Medical history review to identify underlying causes or systemic conditions. - Identification of any additional ocular surface abnormalities. While specific testing for vitamin deficiencies or systemic conditions may be recommended, clinical examination is central to diagnosis.

Treatment Protocols: Management of conjunctival xerosis aims to alleviate symptoms and address underlying causes, and may include: - Artificial tears or lubricating eye drops to provide moisture. - Use of ointments or gels for overnight relief. - Addressing environmental triggers by using humidifiers or protective eyewear. - Treating underlying systemic conditions, such as autoimmune disorders. - Dietary adjustments or vitamin A supplementation if deficiencies are identified. - Avoidance of eye irritants like smoky environments or harsh chemicals. - In some cases, medications to control inflammation or other associated symptoms. - Regular follow-up with an eye care professional to monitor progression and response to therapy.