Suner A, Trisna L, Bahar E. Effectiveness of eight weeks pencil push up therapy for patients with convergence insufficieny in RSMH Ophthalmology Clinic Palembang. OI [Internet]. 2019 Jan. 21 [cited 2025 Oct. 5];43(1):76. Available from: https://www.ophthalmologica-indonesiana.com/index.php/journal/article/view/143