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Binaural Sound During Phacoemulsification and Posterior Chamber Lens Implantation in Geriatric Patients
Sponsor: Seoul National University Hospital
Summary
The purpose of this study is to evaluate the effects of binaural beats on patient satisfaction and intraoperative comfort in patients aged 65 years or older undergoing cataract surgery (phacoemulsification and posterior chamber intraocular lens implantation) under monitored anesthesia care (MAC) with propofol. Participants are randomly assigned to either a binaural beat group or a control group. The binaural beat group will wear earphones and listen to binaural beats from the time they arrive at the operating room until the surgery is completed. The control group will wear identical earphones but will not receive any auditory stimulus. During the procedure, standard vital signs and the bispectral index (BIS) will be continuously monitored in both groups. Following the surgery, the investigators will assess the patients' overall satisfaction using a 7-point Likert scale. Secondary assessments include patient preference for the anesthesia method, intraoperative pain intensity, sedation level, anxiety level, and quality of life (EQ-VAS) measured by a visual analogue scale. Any surgery-related discomfort or adverse events will also be recorded and compared between the two groups.
Official title: Effect of Binaural Sound During Phacoemulsification and Posterior Chamber Lens Implantation on Postoperative Patient Satisfaction in Geriatric Patients: a Single-blind, Randomized Controlled Trial
Key Details
Gender
All
Age Range
65 Years - Any
Study Type
INTERVENTIONAL
Enrollment
60
Start Date
2025-08-07
Completion Date
2026-07-08
Last Updated
2026-05-27
Healthy Volunteers
No
Interventions
binaural beats
The auditory stimulus provided to the experimental group generates an interference wave (binaural beat) by applying a frequency difference of 1 to 4 Hz between the left and right ears. The stimulus consists of pure binaural beats without any additional background music. The volume is initiated at 60 dB, which is set to one level lower than the default output volume of the audio-generating device.
sham earphone
Patients will wear identical earphones to the experimental group, but no sound, binaural beats, or any other auditory stimulus will be provided during the procedure.
Locations (1)
Seoul National University Hospital
Seoul, South Korea