This communication is concerned with blindness in Guernsey calves with choked disk (papilledema) as the conspicuous ophthalmoscopic feature, based on a personal examination of five animals the subjects of this disease, one in 1916, three in 1930 and one in 1931. Two of the calves were slaughtered, and they furnished the material submitted to pathologic and microscopic investigation. The important literature that directly and indirectly pertains to this disorder is reviewed, and the paper is concluded with remarks on the possible etiologic factors.
Systematic writers, for instance, Bayer1 and Jakob,2 in their references to diseases of the optic nerves in animals, included retrobulbar neuritis, optic neuritis (papillitis) and choked disk (papilledema), and the various causes to which they have been attributed.
It appears, quoting Jakob, that intra-ocular inflammation of the nerve head (optic neuritis, papillitis or retinopapillitis) is more commonly present in the horse than in other
de SCHWEINITZ GE. BLINDNESS AND PAPILLEDEMA IN GUERNSEY CALVES, USUALLY BULLS: INCLUDING THE RESULTS OF POSTMORTEM EXAMINATION OF TWO OF THE AFFECTED ANIMALS. Arch Ophthalmol. 1932;7(1):1–17. doi:10.1001/archopht.1932.00820080011001
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