Irlen syndrome

The Irlen syndrome, occasionally referred to as scotopic sensitivity syndrome (SSS) or Meares-Irlen syndrome, very rarely as asfedia, and recently also as visual stress, is a condition relating to the interaction with light of the central nervous system and the eyes at a physiological level. The effects of SSS are most noticeable during activities associated with reading, but an individual with the condition may notice the condition's effects in other activities. The exact cause of SSS is currently under debate within the scientific community. In addition, the scientific community has not reached a consensus on the most efficient method for treating the condition. However, in a joint statement, the American Academy of Ophthalmology, American Academy of Pediatrics, American Association for Pediatric Ophthalmology and Strabismus, and American Association of Certified Orthoptists firmly repudiated the use of lenses for treating SSS, stating that there is no scientific evidence supporting their use.