Group A: Grade 4 (35˚ - 45˚) is the widest angle and grade 3 is an open angle (25˚ - 35˚) | 55 eyes (68.75%) |
Group B: Grade 2 (20˚) is a moderately narrow angle | 18 eyes (22.5%) |
Group C: Grade 1 (10˚) is a very narrow angle | 7 eyes (8.75%) |