Type of evidence | Method of identification | Right eye | Left eye | Either eye | Either | Eye | RR | p Value* | ||||||
Group A (intervention) | Group B (control) | |||||||||||||
n | (%) | n | (%) | n | (%) | n | (%) | n | (%) | n | (95%CI) | |||
Structural and functional evidence | Both clinical examination and photographic grading with visual field grading | 1 | (0.05) | 0 | (0) | 1 | (0.05) | 0 | (0) | 1 | (0.10) | |||
Clinical examination with visual field grading | 14 | (0.68) | 9 | (0.44) | 18 | (0.88) | 11 | (1.05) | 7 | (0.70) | ||||
Photographic grading with visual field grading | 0 | (0) | 0 | (0) | 0 | (0) | 0 | (0) | 0 | (0) | ||||
All structural and functional evidence | 15 | (0.73) | 9 | (0.44) | 19† | (0.93) | 11 | (1.05) | 8 | (0.80) | 1.31 | (0.52 to 3.23) | 0.56 | |
Structural evidence only | Both clinical examination and photographic grading | 2 | (0.10) | 4 | (0.20) | 5 | (0.24) | 2 | (0.19) | 3 | (0.30) | |||
Clinical examination | 7 | (0.34) | 6 | (0.29) | 8 | (0.39) | 5 | (0.48) | 3 | (0.30) | ||||
Photographic grading | 1 | (0.05) | 2 | (0.10) | 1 | (0.05) | 1 | (0.10) | 0 | (0) | ||||
All structural evidence | 10 | (0.49) | 12 | (0.59) | 14 | (0.68) | 8 | (0.76) | 6 | (0.60) | 1.27 | (0.44 to 3.64) | 0.66 | |
Overall | All types of evidence (observed data) | 25 | (1.22) | 21 | (1.03) | 33 | (1.61) | 19 | (1.81) | 14 | (1.40) | 1.29 | (0.65 to 2.60) | 0.47 |
N | Total examined during follow-up | 2047 | 2047 | 2047 | 1050 | 997 |
Only participants with no evidence of secondary causes of glaucoma in the affected eye and evidence of primary angle closure using International Society for Geographical and Epidemiological Ophthalmology (ISGEO) definitions were categorised as cases.
↵* Pearson χ2 test.
↵† Of 19 cases with both structural and functional evidence, 17 cases had two or more visual fields and two cases only had one visual field.