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The facts relating to the case reported here are unusual in several respects. First, the changes in the visual field and the nasal findings led to an erroneous diagnosis of retrobulbar neuritis due to sinus disease. Second, evidence of tumor was not noticed until eight months after the initial complaint. Third, at no time did the ophthalmoscopic examination of the macular area reveal any abnormality to account for the defect of the central field. Fourth, the microscopic appearance of the tumor was sufficiently unique to warrant a report on its own account.
REPORT OF CASE
Mrs. B. E., aged 64, presented herself on March 28, 1938, with the complaint that for a week she had noticed a shadow in front of the right eye. The obscuration was constant in its location and did not have the characteristics of an opacity of the vitreous. Moreover, the visual impairment appeared to her