Faiz Habiburrahman Az Zayyan, Nouval Afif Riza, Leandromora Aril Ezequiel Silalah, Lilis Rahmawati, Dayana Satira Balqis, Nasywa Defriananta, … Alfandino Rasyid. (2026). VisionR: Web-Based Eye Viewing Distance Monitoring System Using HC-SR04 Ultrasonic Sensor for Computer Vision Syndrome Prevention. Journal of Medicine and Health Technology, 3(2), 6–14. https://doi.org/10.12962/j30466865.v3i2.10462