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What is In Herpes zoster keratitis all occurs except – and explain in detail?
All the given options can occur in herpes zoster keratitis. Sclerokeratitis is least common, therefore the answer of choice.

Herpes zoster ophthahniclis has the following symptom
Ptuictate epithelial keratitis - 50%
Pseudodendritic keratitis - 50%
Anterior stromal keratitis - 40%
Endothelitis - 34%
Serpiginous ulceration - 7%
Scleral keratitis - 1 %

The corneal vascular endothelium is a favoured site of the attack and acute endothelial cell loss is common during herpes zoster heratouveitis.