A wide variety of infective agents have been shown to cause posterior uveitis on rare occasions. The leprosy bacillus and the coxsackie group of viruses are two examples chosen from many. Sympathetic ophthalmia has already been mentioned as a specific form of uveitis following injury. An especially rare but intriguing form of uveitis is known as the Vogt-Koyanagi-Harada syndrome, in which is seen the combination of vitiligo, poliosis, meningo-encephalitis, uveitis and exudative retinal detachments.
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