SURVEY OF PATIENT KNOWLEDGE REGARDING SAFETY WHEN USING EYE DROPS AND OINTMENTS AMONG OUTPATIENTS COVERED BY HEALTH INSURANCE AT CLINIC 2D NGUYEN VIET XUAN – HANOI EYE HOSPITAL . YHCĐ [Internet]. 2026 May 4 [cited 2026 Sept. 8];67(CĐ5-NCKH). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5023