In Herpes zoster keratitis all occurs except –
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.
Pseudodendritic keratitis
Anterior endothelial keratitis/Uveitis
Sclerokeratitis
Endothelitis