Which statement about the evaluation of dry eye diseases in veterinary medicine is supported by the material?

• A. EDED is more evaluated in veterinary medicine
• B. ADDE is more evaluated in veterinary medicine
• C. Both are equally evaluated
• D. Neither is evaluated

Answer: (C)

When evaluating dry eye in veterinary patients, the focus is on a comprehensive assessment of both tear production and tear film quality. In practice, clinicians routinely look at aqueous tear production to identify deficiency (the classic aqueous-deficient dry eye) and also assess the tear film’s stability and lipid layer to detect evaporative components. Tear production is commonly measured with tests like the Schirmer test, which helps identify when lacrimal output is reduced. At the same time, tear film integrity is evaluated through methods that reflect evaporative losses, such as tear film breakup time and examination of the lipid layer and meibomian gland function. Many dogs can have mixed etiologies, where both reduced production and increased evaporation contribute to the disease, so a balanced evaluation of both mechanisms is standard. This supports the statement that both aqueous-deficient and evaporative aspects are considered equally in veterinary dry eye assessment. It wouldn’t be accurate to claim that one form is consistently emphasized over the other or that neither is evaluated, because a thorough workup actively interrogates both pathways to guide management.