OHTS-EGPS point system. Assign 0-4 points for each baseline predictor, then sum the points to estimate 5-year risk of developing primary open-angle glaucoma (POAG).

Predictor	0 points	1 point	2 points	3 points	4 points
Age (years)	30-44	45-54	55-64	65-74	≥75
Mean intraocular pressure (mmHg)	<22	22 to <24	24 to <26	26 to <28	≥28
Mean central corneal thickness (micrometres)	>600	576-600	551-575	526-550	≤525
Mean vertical cup-to-disc ratio	<0.3	0.3 to <0.4	0.4 to <0.5	0.5 to <0.6	≥0.6
Humphrey PSD (dB) or Octopus LV	PSD <1.8 or LV <3.24	PSD 1.8 to <2.0 or LV 3.24 to <4.0	PSD 2.0 to <2.4 or LV 4.0 to <5.76	PSD 2.4 to <2.8 or LV 5.76 to <7.84	PSD ≥2.8 or LV ≥7.84

Estimated 5-year POAG risk by total points: 0-6 ≤4%, 7-8 about 10%, 9-10 about 15%, 11-12 about 20%, and >12 at least 33%.

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