Inclusion Criteria:  All patients had chronic unilateral recurrent chalazia that failed to resolve after conservative treatment that included warm compresses and antibiotic and steroid ophthalmic ointments.  Exclusion Criteria:  (1) any intraocular inflammation, ocular infection, allergy, ocular surgery, or ocular trauma in the past 6 months; (2) any eyelid diseases or structural abnormality; (3) any systematic diseases may lead to dry eye or MGD; (4) skin cancer or pigmented lesion in the treatment zone.