KMO and glaucoma: For patients with glaucoma, KMO activity was elevated (median = 0.819, IQR = 0.601–1.085) compared to non-glaucoma patients (median = 0.526, IQR = 0.368–0.824; U = 558, p = 0.032, r = 0.3111), while no statistically significant differences were observed for KAT activity or the 3-HK/KYNA ratio between the glaucoma groups.