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RECOGNITION OF THE LANDOLT RING AS A FUNCTION OF ITS ORIENTATION
Author(s) -
NIELSEN VIGO HEMMERSHØJ
Publication year - 1970
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.1970.tb03741.x
Subject(s) - orientation (vector space) , ring (chemistry) , subject (documents) , function (biology) , mathematics , psychology , artificial intelligence , geometry , computer science , chemistry , biology , organic chemistry , evolutionary biology , library science
Under identical experimental conditions recognition thresholds have been determined for four orientations of the Landolt Ring (six observes and 2168 presentations). The results show that the differences (preferences) between the visual angle thresholds of the four orientations for each subject and for the four averages, do not differ significantly.