Irlen, (first to identify SSS), has yet to come with a straight
out definition of Scotopic Sensitivity Syndrome.. Her book says
that SSS is an affliction that “involves a structural
brain deficit” in the nervous system, causing signals
sent to the brain to be inappropriately processed, resulting
in perceptual problems.
-Scotopic Sensitivity Syndrome identifies that full spectrum
light causes this. Helen goes on to say “that if certain
wavelengths were reduced by colored filters, the brain would
be able to more effectively analyze and process data.
The brochure given out with the Irlen package claims that “SSS
cannot be detected by regular optometric, medical, psychological,
or educational testing."
- Any studies performed on the efficacy of SSS have been hugely
biased. flaws such as "design problems, such as selection
bias, sample size, heterogeneity of subjects, subjectivity of
results, financial interests of investigators, and a failure
to consider such factors as placebo effect, controls, and ophthalmic
status of subjects."
- The tests given to determine if one has SSS have been shown
to not be valid or reliable.
- The AOA (American Optometric Association) stated that “current
research does not support the validity or presence of an actual
visual perceptual dysfunction termed ‘Scotopic Sensitivity