Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
시신경은 눈에서 뇌로 시각 정보를 전달합니다.sisin-gyeongeun nuneso noero sigak jeongboreul jeondalhamnida.The optic nerve transmits visual information from the eye to the brain.