Discussion
Which of the following does NOT fall under Xerophthalmia?
Answer: B
The keyed answer is Lachrymal xerosis.
Xerophthalmia covers the eye changes caused by vitamin A deficiency. The WHO classification lists night blindness, conjunctival xerosis, Bitot's spots, corneal xerosis, corneal ulceration with keratomalacia, corneal scars and xerophthalmic fundus, which is the retinal change.
Conjunctival and corneal xerosis are stages of that scheme, and the retinal change is its xerophthalmic fundus, so the options naming them fit. Dryness of the lachrymal (tear) gland is not a stage in that list, so it is the one that does not fall under xerophthalmia. The term 'retinal xerosis' is not a standard name, which makes it the near-miss option.
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