Dyslexia is a reading impairment and a lifelong condition affecting children and adults. While dyslexia has its core in a disruption of language processing, some believe that it may be a visual disturbance.
Some dyslexics complain that small letters appear to blur and move around when they're trying to read, leading to research being done in the field of optometry to determine if there is a visual component to dyslexia.
A visit to your optometrist should be among the first things you do when you or your child is struggling with reading or not reaching their potential. This must be with a optometrist specialist in this field. This is to determine the health of the eyes and rule out near and far sightedness.