The Effect of Inhalation Aromatherapy on Intraoperative Fear in Patients Undergoing Lower Blepharoplasty Under Local Anesthesia: A Randomized Controlled Trial

Inclusion Criteria: 1. Age 18-65 years, either sex 2. Scheduled for elective bilateral lower blepharoplasty (eyelid bag surgery) 3. Anesthesia: pure local anesthesia (lidocaine and/or ropivacaine) without any sedative agents 4. ASA physical status I-II 5. Alert and oriented, able to understand and complete questionnaires correctly 6. Normal olfactory function (able to distinguish among coffee, alcohol, and vanilla) 7. Voluntary participation with signed informed consent Exclusion Criteria: 1. History of allergy to lavender essential oil or any botanical essential oil 2. Diagnosed olfactory disorder, chronic rhinitis, asthma, COPD, or other respiratory diseases 3. Preoperative use of anxiolytics, sedatives, or opioid analgesics 4. History of psychiatric disorders, cognitive impairment, or needle phobia (trypanophobia) 5. Pregnant or breastfeeding women 6. Participation in another clinical trial within the past month 7. Any other condition deemed by the investigator as unsuitable for study participation