Some recent evidence from both clinical and empirical studies has suggested that some cases of reading disability might be helped by the use of Irlen tinted lenses. Clinical work has been carried out in two special education centres, at Sydney CAE and at Hunter Institute of Higher Education. Four hundred and sixty five clients from these centres, all of whom had reading problems, and who had worn Irlen lenses fora minimum of 12 months were surveyed to assess their evaluation of the usefulness of the lenses for a variety of literacy-related difficulties. Ninety three percent indicated a definite improvement in these difficulties. Largest improvements were reported in amount of effort required to read, fluency of reading, concentration, and comprehension. In each factorsurveyed, more than 50% of respondents indicated definite improvements, including handwriting, spelling, tiredness, and self-confidence. Telephone checks with non-respondents indicated that the results are probably reliable for the whole of the population surveyed.