<prompt> Neuroparalytic keratitis is associated with paralysis of which cranial nerve?3rd4th6th7th  <response>: Ans. d Seventh cranial nerve palsy. Ref. Parson, Diseases of eye, 18th ed., 154; Basak, Ophthalmology, 2nd298Herpes simplex keratitis HSV 1Neuro- ophthalmological keratitisNeuroparalytic KeratitisMarginal keratitisPhlecty-nular keratitisInterstitial keratitisMoorens ulcer- Primary herpetic kertitis- Dendritic geographical inadvertent use of steroids- Disciform treatment is steroids- Punctate- numular- Optic neuritis- Cranial nerve palsy 3, 4 and 6th nerves- Affects cornea, but 3rd cranial nerve palsy is most common cause.Due to paralysis of motor nerve that closes eyelids and is usually a sequel to facial palsy.Catarrhal ulcerCaused by Staph.- Endogenous toxin induced keratitis- TB protein, staph, strepto, intestinal parasites- Fascicular ulcer- Ring ulcer- Pannus- Treatment: topical steroidsGroundglass appearance- Salmon patch of Hutchinson- KP nodules- Etiology: Congenital syphilis, TB Hutchison triad and Cogans syndrome.Chronic serpiginous ulcer.Treated with steroids 