It is helpful both diagnostically and therapeutically to divide dry eye into 2 categories, aqueous tear deficiency (ATD) and evaporative dry eye.
Mucous discharge is common in patients with moderate to severe ATD and in patients with infectious conjunctivitis; consequently, ATD is frequently misdiagnosed as infectious conjunctivitis.
Eyelid margin disease is commonly associated with dry eye; effective treatment of eyelid disease is therefore an important adjunct to dry eye management.
Excerpted from BCSC 2020-2021 series: Section 10 - Glaucoma. For more information and to purchase the entire series, please visit https://www.aao.org/bcsc.