If your dyslexic child seems to struggle with the visual aspects of reading, but the eye doctor said 'everything's fine' - the problem may be with brain-based aspects of seeing in dyslexia. Dyslexia can be associated with a wide range of visual difficulties including problems with stabilizing visual gaze, moving the eyes smoothly and in a coordination fashion, and visually registering letters or words.
Additional studies supporting the visual aspects of dyslexia continue to trickle out, but here in the U.S., much more attention is paid to the phonological aspects of dyslexia in the classroom. Children may have predominant phonological problems, predominant visual problems, or mixtures of the two. Understand what a particular child's difficulties are will help focus remediation and educational strategies.
There has been an explosion of research in the biological bases of dyslexia in the past few years. School are having to play catch up with the pace of research.
Dyslexia Research Trust - Science and Research
Dyslexia More than Phonological Disorder
Seeing Differently - Contrast Differences and Dyslexia