Table 3.

Degree of PLD estimated by gonioscopy as percentage of total ICA circumference affected and equivalent ordinal grade as published by Pearl et al. [21]

Percentage of ICA affected	Definition	Ordinal grade
0 %	Unaffected	0
<20 %	Mildly affected	1
20–90 %	Moderately affected	2
>90 %	Severely affected	3