Table 1.
Subtypes of angle closure and their definition in the present study.
Fig 1.
A and B. ASOCT image showing angle opening distance and trabecular iris surface area at 750 microns from the scleral spur (AOD750, TISA750), iris thickness (IT750), iris curvature (I-Curve), anterior chamber depth (ACD), anterior chamber width (ACW), and lens vault (LV).
Table 2.
Comparison of clinical characteristics among different subtypes of angle closure.
Table 3.
Comparison of angle and anterior segment parameters (Mean ± SD) measured by anterior segment optical coherence tomography in each subtype of angle closure.
Fig 2.
The anterior segment-optical coherence tomography (ASOCT) images of a typical case from each of the 3 clusters: Upper: A case from cluster 1 with shallow ACD and ACA and ACW, and a large lens vault: Middle: A case from cluster 2 with deep anterior chamber and thick iris, bottom: a case from cluster3 with intermediate ACD, ACA, LV, and high iris curvature.
Table 4.
Comparison of angle and anterior segment parameters (Mean ± SD) measured by anterior segment optical coherence tomography and B-scan ultrasonography in each cluster.
Fig 3.
The distribution of clusters in shows a significant difference (p<0.001) among primary angle closure suspects (PACS) primary angle closure glaucoma (PACG), acute primary angle closure (APAC) eyes and fellow eyes of APAC.