The effect of electroacupuncture on corneal immune cells in dry eye patients

INTERVENTION: Electroacupuncture group:Electroacupuncture;Placebo electroacupuncture group:Placebo electroacupuncture; CONDITION: Dry eye PRIMARY OUTCOME: Central corneal IC density; SECONDARY OUTCOME: Ocular surface disease index;Chinese version of the dry eye‐related quality‐of‐life score questionnaire;Tear meniscus height;Noninvasive tear breakup time;Evaluation of conjunctival congestion;Corneal sodium fluorescein staining;Schirmer I test;Corneal sensitivity;Conjunctival sensitivity;Eye pain score;Central and peripheral corneal IC parameters;Central and peripheral corneal subbasal nerve parameters;Tear protein detection; INCLUSION CRITERIA: 1. Age 18‐65 years old (inclusive), both sexes; 2. Meet the diagnostic criteria of dry eye; 3. Understand and agree to participate in this study and sign the informed consent form.