Sang Ayu Putu Udara Pradnyadewi, Krisna Dwi Purnomo Jati, Meta Rahma An Nazzila, Tatang Talka Gani. The Hidden Costs of Inpatient Glaucoma Treatment: Out-of-Pocket Burden at a Tertiary Care Hospital in Yogyakarta. OI. 2026;52(2):123-132. doi:10.35749/oi.v52i2.102146