Fig. 5

UBM Examination Parameters. A. Iridocorneal angle parameters: Schwalbe’s Line Distance (SLD) was measured from the borderline of the cornea and sclera to the anterior lens capsule. The Iridocorneal Angle (ICA) was identified at the junction of the sclera, cornea, and iris base, with measurements taken between the inner scleral layer and the outer iris root. The Angle-Opening Distance (AOD) was measured perpendicularly from Descemet’s membrane to the anterior iris surface. B. Ciliary cleft parameters: Ciliary Cleft Width (CCW) was measured from the pectinate ligament’s outer layer to the iris root’s upper surface. Ciliary Cleft Length (CCL) was measured from the angle recess to the midpoint of the CCW. C. Ciliary Cleft Area (CCA) was calculated by tracing the inner scleral surface from the angle recess to its boundary and the superior iris root up to the CCW, providing insights into the CC’s anatomical structure