Tinted
glasses
The simplest
way to compensate for visual perception difficulties is with properly
prescribed glasses. Coloured glasses (spectacles with tinted lenses)
have been shown to reduce headaches in open trials and also in
two small scale trials using a double-masked protocol, one with
children and the other with adults.
The colour
that is optimal for overlays differs from that optimal in lenses.
The shade has to be selected with precision in order to obtain
fully beneficial results.
Opticians
have been prescribing spectacles with tinted lenses for some time
now and have achieved impressive improvements in patients with
visually stimulated dyslexia. Two factors have increased the life
chances for a lot of children,first, the limited range of dye
tints available has been vastly increased by a major manufacturer
making advances in plastic lens materials and secondly the difficulty
of accurately prescribing exactly the right tint has been reduced
by the development of Read-Eye, a diagnostic instrument for opticians.
Comments
from children, parents and teachers on the effect of prescribed
tinted lenses:
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