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What is Interstitial keratitis is caused by all except - and explain in detail?
INTERSTITIAL KERATITISInterstitial keratitis denotes an inflammation of thecorneal stroma without primary involvement of theepithelium or endothelium.Causes. Its common causes are:  Congenital syphilis  Tuberculosis  Cogan's syndrome  Acquired syphilis  Trypanosomiasis  Malaria  Leprosy  Sarcoidosis REF:Comprehensive ophthalmology,4th edition,pg no.120