Intermediate

The diagram attached discusses the factors and conclusion of application for Irlen lenses to the original clinical case.
 

The clinical practice guidelines and secondary sources found require appraisal to determine how believable the conclusions are.

However developed and published appraisal tools are lacking for secondary sources, unlike primary sources.

The National Health and Medical Research Council clinical practice guideline portal reports 4 criteria for which practice guidelines, policy statements and other summaries can be appraised:

The clinical practice guidelines and secondary sources found require appraisal to determine how believable the conclusions are. However developed and published appraisal tools are lacking for secondary sources (compared with primary sources / studies). The National Health and Medical Research Council clinical practice guideline portal reports 4 criteria for which practice guidelines, policy statements and other summaries can be appraised:

   Searching using the PICO:

The suggested PICO from Step 1: Ask was For children with reading difficulties (P) does coloured lenses (I) improve vision and/or reading ability (0). Using the PICO table keywords and synonyms were established, developing a search string of:

You have been referred a 12 year old female who is having trouble reading at school for assessment, diagnosis and management. The child is also seeing a psychologist, speech pathologist and educational tutor regarding her learning. Her mother heard about coloured lenses and overlays in the media and wants to see whether these strategies could be beneficial for her daughter's reading.