Why Do Coloured Overlays Help Dyslexia?

This syndrome has been hypothesized as sensitivity to frequencies of the light spectrum that causes visual stress

(Hoyt 1990). Colored overlays are claimed to alleviate visual stress and improve symptoms commonly related to dyslexia such as low reading rate, accuracy, and comprehension (Evans et al.

How does color overlays help dyslexia?

Colored overlays are claimed to alleviate visual stress and improve symptoms commonly related to dyslexia such as low reading rate, accuracy, and comprehension (Evans et al. 1999; Rickelman & Henk, 1990; “What is Irlen Syndrome,” n.d.).

What Colour overlay is best for dyslexia?

The reason some people find it hard to read black text on a white background is because “their visual cortex is oversensitive to certain wavelengths.” When people with dyslexia or visual stress read black text with an overlay over it, the text becomes clearer while headaches or migraines can be reduced.