Participant selection and acquisition of otoscopic images
OME
OME otoscopic images from inpatients and outpatients were collected retrospectively from three hospitals between 2015 and 2019, including Sun Yat-sen Memorial Hospital of Sun Yat-sen University, the Third Affiliated Hospital of Sun Yat-sen University, and Zhujiang Hospital of Southern Medical University. Otoscopic images were taken with a 4-mm (KARL STORZ, Germany) or 2.7-mm (TIAN SONG, China) 0-degree otoscope by otolaryngologists. OME cases were confirmed with clinical criteria guidelines [