WHO’s classification of xerophthalmia [7] | |
---|---|
XN | Night blindness |
X1A | Conjunctival xerosis |
X1b | Bitot’s spots |
X2 | Corneal xerosis |
X3A | Corneal ulceration/keratomalacia < 1/3 corneal surface |
X3B | Corneal ulceration/keratomalacia ≥ 1/3 corneal surface |
XS | Corneal scar |
XF | Xerophthalmic fundus |