Text-book of ophthalmology . is may take placeand lead to a fatal issue. 587. Herpes Febrilis.—Herpes febrilis forms on the lids small limpidvesicles which are usually situated in groups placed on a common, slightly DISEASES OF THE LIDS 657 reddened base. After a few days they dry up without leaving any febrilis is usually unilateral and develops in consequence of febrileinfectious diseases, most often those of the respiratory tract. It is oftenassociated with an eruption of vesicles on the cornea (page 285). Sprink-ling the vesicles with a desiccant dusting powder suffices for the
Text-book of ophthalmology . is may take placeand lead to a fatal issue. 587. Herpes Febrilis.—Herpes febrilis forms on the lids small limpidvesicles which are usually situated in groups placed on a common, slightly DISEASES OF THE LIDS 657 reddened base. After a few days they dry up without leaving any febrilis is usually unilateral and develops in consequence of febrileinfectious diseases, most often those of the respiratory tract. It is oftenassociated with an eruption of vesicles on the cornea (page 285). Sprink-ling the vesicles with a desiccant dusting powder suffices for the Herpes Zoster.—Herpes zoster is an affection of the skin whichconsists in the formation of vesicles along the terminal expansion of a the cranial nerves the trigeminus is the one in whose area of distri-bution this affection occurs. The efflorescences are then found in the vicin-ity of the eye, for which reason herpes of the trigeminus is known as herpeszoster ophthalmicus or zona Fig. 286.—Herpes Zoster a girl twenty years of age. Beginning of the disease five days previous. The vesicles occupythe region of distribution of the first branch of the trigeminus. This is the case even with those onthe nose which extend down to the tip of the latter (corresponding to the distribution of the ramusnaso-ciliaris of the first branch). Violent neuralgic pains in the course of the trigeminus usually precedefor some days the outbreak of herpes. Then the exanthem makes its appear-ance, with accompanying febrile symptoms—vesicles, which for the mostpart are arranged in groups, starting up upon the reddened The vesi-cles most frequently occupy the region of distribution of the first branch ofthe nerve, so that they are found upon the upper lid, upon the forehead asfar as the scalp, and also upon the nose (Fig. 286). When the district sup-plied by the second branch of the trigeminus is affected, the vesicles are situ- 658
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