Ocular therapeutics for physicians and students / by F.W. Max Ohlemann ; translated and edited by Charles A. Oliver.

  • Ohlemann, F. W. Max.
Date:
1899
Catalogue details

Licence: Public Domain Mark

Credit: Ocular therapeutics for physicians and students / by F.W. Max Ohlemann ; translated and edited by Charles A. Oliver. Source: Wellcome Collection.

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    areolaris, circumscripta, macularis, centralis, equa- torealis, and syphilitica, as well as chorio-retinitis. This disease of the chorioid is characterized by the appearance of whitish-yellow spots, paling of the pigment layer, and aggregations of dark, irregular pigmentation at the foci of inflammation. It has been found that the more central the foci of disease are located, the greater are the visual dis- turbances. If they are situated in the region of the macula (macular chorioiditis), direct vision is greatly impaired. The patients also complain of the light, and of blurring and distortion of objects (metamor- phopsia). Scotomata may be present. Aside from diminution of vision, there is a sub- jective symptom, flickering, which is important in the diagnosis. If hyperemia of the optic nerve- head is present, it is wise to examine the peripheral parts of the chorioid with the ophthalmoscope while the pupil is artificially dilated. The existence of opacities in the vitreous humor and changes in the peripheral portions of the chorioid will confirm the diagnosis. If large, white patches are already pres- ent, a diagnosis of the condition is not difficult. The prognosis in all cases, with the exception of the syphilitic form, is unfavorable. Treatment in acute cases consists in placing the patients in darkened rooms and in using mercurial inunctions, Lewin's corrosive sublimate injections, in doses of one-tenth of a gram (gr. A) per day, may be of value. Injections of pilocarpine or the internal administration of salicylate of sodium in