Colorimeter for poor reading and blurred near vision:

A Colorimeter is an instrument that tests for poor and or blurred reading vision. The colorimeter tests your vision in around 15 mins with different colors. Some colors may help for near vision, others will make no difference. If a color helps with reading print you can take a test filter back home. If the test filter is helpfull at home for reading you can have the same tint incorporated in your reading presciption.

Colorimetry & Medical Tints for young and older readers:

We are able to offer our young and older patients colorimetry assessments after which medical tints may be suggested. These assessments are suitable for those suffering from a variety of symptoms and signs related to visual fatigue and perception distortions. Some people can experience distortions when they look at certain materials, particularly text, medical tints may help with these symptoms. The distortions of text can include blurring, movement of letters, words doubling, shadowy lines, shapes or colours on the page. Those who may benefit from this specialist service include light induced migraine, light induced epilepsy sufferers as well as patients with suspected dyslexia or dyspraxia.

Overlay Assessments, Colorimetry, Dyslexia, Photosensitive Migraine & Epilepsy:

If you suffer from Dyslexia, Dyspraxia, Migraines or Epilepsy which are caused by sensitivity to light you may benefit from a colorimetry assessment.

Difficulties reading at school or at home, is it dyslexia ?

People with reading difficulties at home or at school may have dyslexia. The most common type of specific learning difficulty is a difficulty with reading and spelling; and this is often called dyslexia.

Dyslexic people may be highly intelligent in conversation, but have trouble with written language. Leonardo da Vinci and Einstein are both believed to have been dyslexic.

The term dyslexia is usually reserved for a severe degree of reading difficulty. Dyslexia is best diagnosed by an educational psychologist or qualified specialist teacher. Assessments that may lead to such a diagnosis can be arranged through your school, or privately. Optometrists do not diagnose dyslexia, but they detect visual problems that can contribute to reading difficulties, including dyslexia.

The term dyslexia is used throughout, but the visual problems that are described can also be present in children who have other, non-dyslexic, difficulties at school, including dyspraxia. A person does not have to be diagnosed as dyslexic in order to benefit from colorimetry.

Visual reading factors and difficulties with seeing print:

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 the reading difficulty.

These visual problems would not normally be detected in a standard sight test. Two of the most common visual anomalies in dyslexia are poor or unstable co-ordination of the two eyes (binocular instability) and a reduced ability to focus close to.

These visual problems can cause eyestrain, visual distortions, or headaches. This may slow reading and discourage patients young and older from prolonged reading.

Not all dyslexic people have these visual problems, but some have visual anomalies without realising it. People with a mild specific reading difficulty, perhaps not bad enough to be called dyslexia, can also have these visual problems. In some cases, prescripiton glasses may be required.

An eye examination with an optometrist will not be able to diagnose dyslexia. But if dyslexia is suspected then it is sensible to start by investigating whether the visual function is normal.

Eye examinations for people with reading difficulties:

We see patients at the practice to carry out a full eye examination and additional tests to look for the visual problems that may be associated with difficulties reading. For Colorimetry there is a sepperate fee.

Coloured Lenses and Learning:

Some people with difficulties at home or school benefit from coloured filters. This has been called Meares-Irlen Syndrome, Visual Stress, or Scotopic Sensitivity Syndrome. If our findings suggest that a person may benefit from colour, then we give patients a coloured overlay to try at home. If this is still being used after a few weeks then a further appointment can be arranged for testing with a special instrument, the Intuitive Colorimeter. This enables the precise tint for glasses to be determined. For patients who are prescribed Precision Tinted lenses the exact colour of tint that is required can, like any other optical prescription, change over time. Therefore, we usually repeat the testing with the intuitive colorimeter at yearly intervals.

The British Dyslexia Association is a support group which can give information on the legal situation concerning learning difficulties and legislation on education.

Dyslexia Action has many local offices where psychologists can assess learning difficulties and specially trained teachers can help to overcome these problems.