Clinical Outcome of Lipiflow Treatment Prior to Cataract Surgery in Dry Eye Patients

Inclusion Criteria: * Patients older than 21, who will get catarct surgeyr * Patients whose visual acuity anticipated better than 20/25 after surgery * Patients with informed consent * Patients with meibomian gland dysfunction Exclusion Criteria: * ocular injury, active injection * uncontrolled systemic disease * Contact lens wear within 1 month * Allergic to fluorescein sodium or topical anesthetics * ocular surgery or trauma within 6 months * disorder of lid anatomy * other reason for decreased vision other than cataract * anticipated visual acuity less than 20/25 * Patients less than 20 years.