This communication is based on a clinical and anatomic survey of 171 verified supratentorial tumors of the brain studied in the neurologic service and in the neuropathologic laboratory of the Mount Sinai Hospital. The investigation was undertaken in an attempt to answer the following questions:
Of what assistance are studies of the visual fields and observations on other ocular disturbances, such as diminished acuity of vision, papilledema, optic atrophy, alterations of the pupillary reflex and ocular palsies, in the localization of brain tumor?
How frequently do the observations at operation or on postmortem examination corroborate the clinical diagnosis, particularly when the latter is based on defects in the visual fields?
What factors aside from the location of the tumor are responsible for the presence or absence of the commonly characteristic ocular disturbances?
For the needs of this study the topographic grouping of tumors