World Health Organization classified<unk>  into following stages: * XN-Night blindness * X1A-Conjunctival xerosis * X1B-Bitot spots * X2-Corneal xerosis * X3A-Corneal ulceration/keratomalacia, involving less than one-third of the cornea * X3B-Corneal ulceration/keratomalacia, involving more than one-third of the cornea * XS-Corneal scar due to<unk>  * XF-Xerophthalmic fundus
Xerophthalmia
Enophthalmia
Corneal opacity
Enophthalmos
Exophthalmos
Hypertrichosis
Raccoon eyes
Photophthalmia