Visual Dyslexia

Although this appears to be a relatively new problem, it would appear to have been around for some time now, but it was just never recognised and diagnosed.

The theory is that some people have an imbalance at their retinas of their colour sensitive nerves, or have hyper-sensitive cortical areas, and so the brain gets muddled or jumbled messages, which makes reading and writing difficult. Imagine trying to listen to the radio with two or more other stations on at the same time, the poor signal and interference would be very difficult to cope with.

The City University, London, designed the Intuitive Overlay Assessment test to determine whether there was such an imbalance, and to assess what improvements filtering out that imbalance may bring the person. We use the computerised version, which gives repeatable, more independent results. The end result will show if any particular colour filter will make a substantial difference, and if it will then glasses are made up to the persons prescription, and incorporating the specific tint found.

The general experience shows that such imbalances are seldom there in isolation, and there is usually some other visual block as well – astigmatism, long or short sight, and -particularly – an oculo-motor imbalance. The final glasses will correct any prescription, there may be a need to do some eye muscle exercises, and the tint is included too.

The NHS pays for the standard eye examination, for exempt patients, and for glasses for children, but not for the Intuitive Overlay test, or the tint that may be required. The test costs £20, and the tint costs £21.