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
의사들은 시야계를 사용하여 환자의 시야를 측정합니다.uisa-deul-eun si-yagye-reul sayonghayeo hwanja-ui siya-reul cheugjeonghamnida.Doctors use a campimeter to measure the patient's field of vision.