Table 3. Predictive Capability of Each Factor as Measured by the R².

Predictor	R2 (95% CI)
Optic disc progression	79 (65-87)
Baseline grading	21 (9-37)
Baseline vertical cup-disc ratio	21 (8-37)
Baseline IOP	10 (2-22)
Central corneal thickness	6 (1-15)
Baseline PSD	26 (15-40)
Age	23 (11-39)

Abbreviations: CI, confidence interval; IOP, intraocular pressure; PSD, pattern standard deviation.