THE PERIPHERAL VISUAL ACUITY OF 100 SUBJECTS

Acuity curves for periphed vision are well known, t,hose of Wertheim (3) and Koester ( 1 j t.Jeing freyuent~ly reproduced. Since their findings nearly fifty years ago the subject has been investigated by numerous workers whose results have been reviewed bv Traquair (2j who lists the data of some 28 investigations by 1 1 workers. AltJhough their met)hods were essentially the same the results differed considerably. Sot a great many subjects were‘ examined. This suggested a more or less wide variation of peripheral visual acuity under normal condit,ions. Therefore this investigation undertook the development of a suitable test for peripheral visual acuity and the testing of a sufficient number of individuals to determine the extent of the suspected variation.