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The effect of defocus on edge contrast sensitivity
Author(s) -
Jansonius N. M.,
Kooijman A. C.
Publication year - 1997
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1046/j.1475-1313.1997.96000543.x
Subject(s) - contrast (vision) , sensitivity (control systems) , enhanced data rates for gsm evolution , optics , physics , computer science , computer vision , electronic engineering , engineering
Summary The effect of optical blur (defocus) on edge contrast sensitivity was studied. Edge contrast sensitivity detoriates with fairly small amounts of blur (∼0.5 D) and is roughly reduced by half for each dioptre of blur. The effect of blur on edge contrast sensitivity equals the effect of blur on sine wave contrast sensitivity for a spatial frequency of approximately 3 cpd.