Difficulties With Dyslexia
Visual Assessments in Reading Difficulty and Dyslexia
Some people have difficulty in learning to read fluently and to spell, this can be a stand alone issue or be alongside conditions such as autism.
There are certain, often subtle, eye movement and vision problems that are more common in specific reading difficulty or dyslexia. The correction of these problems by eye exercises or with spectacles, whilst not immediately curing the reading difficulty, can make learning to read more comfortable.
However, although probably a majority of younger people with reading difficulty have perfect eyesight and eye movements, some will notice visual distortions when trying to read a page of print- blurring, glare or movement of words or letters. This is called visual stress. Research by the Medical Research Council and the Institute of Optometry has shown that these visual distortions can be helped by the use of coloured overlays and precision tinted spectacle lenses (Meares-Irlen syndrome), which in turn helps progress with reading.
Our Market Harborough and Olney practices are equipped with Intuitive Colorimeters, specialist instruments which enable controlled variation of coloured light to assess the benefit of colour on reading for the individual, as well as other equipment to assess eye movements and muscle balance for the investigation of eye and vision problems in dyslexia and reading difficulty.
All of our Optometrists are pleased to see patients, existing and new, in any practice who may have reading difficulty or dyslexia, to offer initial screening before referring patients onwards. A routine eye examination is necessary initially to assess the basic condition of the eyes, which is followed, if indicated, by more specialised tests and procedures relating to the reading difficulty.
It is usually necessary to allow an hour for the consultation and it is helpful to bring along any relevant reports from Special Needs Teachers or Educational Psychologists.
To make an appointment for a consultation, or for further information, please contact the practice of your choice.
Visual Stress (Meares-Irlen syndrome)
This can be explained as sensitivity to certain visual patterns, especially stripes. The visual distortions of print and text, and rapid fatigue when reading, which is common in this condition, can occur despite normal vision. The symptoms can often be reduced by the use of coloured filters –overlays or spectacle lenses.
Some symptoms of Meares-Irlen syndrome
Movement/wobbling of text
Blurring of print
Letters changing shape or size
Patterns seen in the gaps between words or lines of print
Halos of colour around letters or words
Tiring easily whilst reading
Headaches or eye irritation
Sore, watery eyes
Some signs of Meares-Irlen syndrome
Moving closer to or further away from the book
Skipping words or lines
Rubbing eyes and frequent blinking
Poor comprehension of text read
Frustration and poor self-esteem
The symptoms and signs of visual stress can often be reduced by using colour when reading. The reduction only occurs when the colour is selected to suit the individual. Initially this can be assessed by the trial of coloured overlays placed over the printed text. If coloured overlays help, then coloured lenses in spectacles will be more practical in use, but for various reasons, the most effective precision tinted lenses are unlikely to be the same colour as the selected overlay.
The assessment for the best and most effective coloured lenses is undertaken with the aid of the Intuitive Colorimeter. In 2019 we installed the newest generation of Colorimeters in our Market Harborough branch. The degree of improvement in reading ability does vary, but can often be considerable –an improvement in reading age of one or two years within a few weeks of acquiring the lenses is not unusual.