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%)