International Session 1　　Audiology 1

In Cambodia, shortages in economic resources, healthcare personnel, and medical equipment result in many children remaining untreated for otolaryngological diseases, raising concerns about hearing-related developmental outcomes.School health systems for early detection of hearing impairment remain insufficient.We conducted app-based hearing screening as part of a school health examination program, using headphones and a mobile application without soundproof facilities or screening audiometers.Pure tones at 1， 000 Hz and 40 dB were presented bilaterally, and children were instructed in Khmer to raise their hand upon hearing the sound.However, limited comprehension of the procedure and excessive environmental noise made screening at 40 dB challenging.Increasing the intensity to 60 dB enabled responses in some grade levels, indicating the need for improved testing environments and instructional strategies.A comparative analysis with data from Gunma University-affiliated schools will be conducted to contribute to the establishment of an effective school-based hearing screening system in developing countries.