Dr Nadia Northway is an orthoptist who has worked in academia for 30 years. She teaches optometrists, orthoptists, dispensing opticians, nurses and rehabilitation workers across the UK and overseas. Her Phd investigated the effects of colour on neuro-physiological and psychophysical aspects of vision and reading. She has taught all over the world about visual stress and binocular vision anomalies and has been a regular presenter on the topic at conferences. She has her own private practice specialising in specific learning difficulties and neurological disease where prescribing colour is part of her treatment strategies to alleviate visual discomfort and laborious reading. She is currently the orthoptic European committee representative for the British and Irish Orthoptic Society as well as a member of the Scottish Steering Vision Group and a member of the cross-party advisory group on dyslexia at the Scottish Government. She is a visiting lecturer at the University of South-Eastern Norway, University of Liverpool, University of Sheffield and UCL.