It is a nonsuppurative inflammation of the corneal stroma (1).
Interstitial keratitis is one of the late stigmas of congenital syphilis, although milder forms occasionally occur in acquired syphilis, tuberculosis and leprosy (1).
May occur at any stage of syphilis (2)
Also associated with herpes, Cogan syndrome, parasitic and autoimmune diseases(1).
Treatment is palliative until the disease has run its course:
Reference:
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