J. Faubert et al., Effects of induced transverse chromatic aberration from an afocal prismatic lens on spatio-temporal sensitivity, OPHTHAL PHY, 19(4), 1999, pp. 336-346
The goal of this study was to evaluate the effect of ophthalmic lens-induce
d transverse chromatic aberrations (TCA) in natural viewing conditions on s
patio-temporal thresholds. Three psychophysical experiments were performed;
the first isolating the spatial component, the second isolating the tempor
al component and the third assessing spatio-temporal combinations. Taken to
gether, the results show that TCA has profound effects on medium to high sp
atial frequencies (above 1 cpd) consistent with previous studies, and that
the ratio of deficit TCA/blur can be higher than 2:1 for equivalent dioptri
c strengths. Furthermore, the results of Experiment 1 and 3 taken together
show that the relative sensitivity loss caused by TCA can differ significan
tly between individuals and that a possible factor for this differential lo
ss is the overall baseline spatio-temporal sensitivity profile of the indiv
idual. (C) 1999 The College of Optometrists. Published by Elsevier Science
Ltd. All rights reserved.