Abstract
Background The aim of this study was to evaluate traffic safety of Defocus Incorporated Multiple
Segments (DIMS) spectacle lenses in combination therapy with atropine.
Patients and Methods 12 young adults (age: 24 – 45; 30,1 ± 5,7 years) were recruited to evaluate corrected
distance visual acuity (CDVA), contrast sensitivity (CS; FrACT), glare
sensitivity (Mesotest) under the influence of DIMS spectacle correction alone
and combination therapy with 0,01% atropine.
Results When looking through the central area of the DIMS lens, far vision does not decrease
due to the influence of atropine; influence of glare and atropine leads to a reduction
of
CDVA by 0.10 logMAR. When forced to look through the DIMS area, far vision is
reduced by 0.09 logMAR due to the influence of atropine in the absence of glare; in
the presence of glare, no
further loss of visual acuity can be observed under the influence of atropine.
Contrast vision with DIMS glasses is not altered by the effects of atropine. Concerning
glare sensitivity, DIMS
lenses did not show any visual impairment that would be relevant to vision and
road safety. Additional atropinization does not affect glare sensitivity.
Conclusion DIMS spectacle lenses are safe for participation in road traffic and do not relevantly
impair traffic safety, neither alone nor under the acute influence of 0,01%
atropine.
Key words
myopia - atropine - DIMS spectacle lenses - road safety - contrast sensitivity - children
