AUTORS COUNTRY SUBJECTS CUT OFF SENSITIVITY SPECIFICITY GOLD STANDARD AGREEMENT STUDY
Thomas et Al. 1996 [44] India 96 VH 1 62% 89% Gonioscopy   Clinical setting
Congdon et Al. 1996 [45] Taiwan 562 VH 2 94% 58% Diagnosis of PACG   Population-based
Park et Al. 2010 [46]   148 VH 1 92% nas 96% temp 100% nas 90% temp 60° of invisible TM each quadrant K: 0.80 nasal K: 0.82 temporal Clinical setting
Kashiwagi et Al. 2005 [47] Japan 383 VH1 VH2 29.3%   70.7% 47.1%   9.7% Shaffer grade 2 86.3%   64.2% Clinical setting
Table 5: Sensitivity and specificity of the VH grading system