Coloured lenses and reading: A review of research into reading achievement, reading strategies and causal mechanisms

The paper reviews investigations on the use of coloured filters in relation to possible causal mechanisms, effects on reading achievement and effects on eye movement. Studies of causes suggest a retinal ‐ sensory after‐imaging problem, possibly related to the magnocellular visual neurological pathway. Studies of reading achievement suggest this disability may be one causal factor in reading problems but improvement will be influenced by prior word attack skill and willingness to be involved in reading. Investigation of reading strategies suggest that the claimed reductions in print distortions could allow more reading fluency and enable attention to be directed to meaning rather than word identification, which in turn facilitates access to text context as a supplement to word recognition.