According to Duke-Elder (I965), ocular complications occur in about 50 per cent. of cases of herpes zoster ophthalmicus (HZO). However, the involvement of retinal vessels in the course of HZO is exceedingly rare (Walsh and Hoyt, I969) and there are few case reports in the entire ophthalmic literature. Retinal vascular changes previously described have been occlusion of the central retinal vein (Zolog and Popescu, I957) and occlusion of the central retinal artery (Julien, I952). In addition, Collier (I959) described a localized form of arteritis without retinal exudates and Koch (I949) reported a case of HZO in a child of 5 years who had mild arteriolar narrowing with small exudates in the macular region.
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Brown et al. (1973) studied this question.