Actually their trial published in 1994 showed no improvement in reading using the Neale rate of reading test. Although some subjects experienced greater subjective comfort this part of the trial was severely hampered by follow up of just over 50% of subjects so we do not know what happened to the rest.
Governmental bodies such as the West Midlands Health Technology Assessment Board and various Health Authorities have reviewed the evidence and found it lacking and have not recommended funding and do not accept that coloured lenses and filters can make a dramatic difference.
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