Perimetric examinations of patients with cerebral lesions reveal many kinds of defects in the homonymous fields of vision.1 Among the commoner ones are partial or complete anopias or ambylopias. Insular or discrete scotomata have been observed, but their incidence is low. An analysis of our cases has shown that in general the kind of defect one finds depends on the location and etiology of the lesion in the geniculocalcarine system.
In a previous communication it was stressed that patients with tumors of the temporal lobe showed a progressive change in vision from day to day when serial perimetric examinations were made. The earliest sign of impending hemianopia in temporal lobe tumors was either a loss of vision in the temporal crescent of one eye or impairment of perception of color in homonymous quadrant or half-fields of vision.2 Later, these visual defects became more extensive and more definitive. After
BENDER MB, BATTERSBY WS. Homonymous Macular Scotomata in Cases of Occipital Lobe Tumor. AMA Arch Ophthalmol. 1958;60(5):928–938. doi:10.1001/archopht.1958.00940080948012
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