Most experts agree that problems with sight are not usually a main cause of dyslexia. Certain visual problems, however, do occur more often in dyslexia and these may, in some cases, contribute to reading difficulty.
These visual problems would not normally be detected in a school eye test. The most common visual anomalies in dyslexia are a reduced ability to focus close and poor or unstable co-ordination of the two eyes (binocular instability). A series of tests are needed to detect binocular instability,
These visual problems can cause eyestrain, visual stress, or visual distortions. This may slow reading and discourage children from prolonged reading.
The visual problems can usually be treated with simple eye exercises. In some cases, glasses may be prescribed.
Tinted lenses and Dyslexia
Some people may benefit from coloured overlays placed on top of reading material. Eye Care Opticians can assess what colours can reduce the visual sensations and issue the person a coloured overlay.
If this is still being used after a few months we can refer you to a clinic to make a more precise tint for glasses.