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. 2017 May 18;12(5):e0177769. doi: 10.1371/journal.pone.0177769

Fig 2. Determinations of AOD500μm, IT500μm/750μm/1000μm, IC, LT, ARA750μm, and I-area by AS-OCT.

Fig 2

A: Iris thickness at 500, 750, and 1000 μm (IT500μm, IT750μm, and IT1000μm, respectively) were defined as the perpendicular distance from the point at iris pigment epithelium anterior to the iris surface at 500, 750, and 1000 μm from the iris root, respectively. B: Iris area (I-area) was defined as the cross-sectional area of the iris. C: Iris curvature (IC) was defined as the maximum perpendicular distance between the iris pigment epithelium and the line connecting the most peripheral to the most central point of the epithelium. D: Lens thickness (LT) was defined as the maximum perpendicular distance between the anterior and posterior poles of the lens. E: Angle opening distance at 500 μm (AOD500μm) was defined as the perpendicular distance from the point anterior to the scleral spur to the anterior iris surface at 500 μm from the scleral spur. F: Angle recess area at 750 μm (ARA750μm) was defined as the enclosed triangular area demarcated by the anterior iris surface, trabecular meshwork, and corneal endothelium to a distance of 750 μm from the scleral spur.