Extracted from Autism An inside-Out Approach By Donna Williams
Tinted lenses, specifically designed to
combat visual-perceptual problems are another 'technique' that comes from an
experience-based approach. The Irlen technique is a worldwide technique of assessing,
fitting out and producing these lenses (which they refer to as Irlen Filters). Another
technique being used by some specialists in the area of ophthalmology (the study of
visual-perception) is the color-imitor technique. Both of these techniques use tinted
lenses, or filters, to filter out certain light frequencies in order to reduce information
overload through the eyes. Assessment for the correct tints within the Irlen Method
involves looking through tinted lenses (through which one may look at the page or around
at the environment or faces) and may be a more precise method of assessing when a tint is
effective. The Color-imitor technique is primarily designed to deal with problems with the
printed page and involves the shining of a colored light onto the printed page to assess
which tint may be appropriate for lenses - a method which may be questionable in its
accuracy. By reducing visual overload the brain can better process for meaning what the
eyes see. These lenses can also have a secondary effect of reducing hypersensitivity to
bright light and also in helping to reduce some of the 'interference' (the
visual-perceptual equivalent of 'white noise') that can happen with visual
hypersensitivity and visual-perceptual problems. |