It appears that poor visual skills do not stop good readers. Generally, poor readers tend to be less skilled at rapid, accurate naming. They will have more trouble naming familiar whole words, too. Try naming twins . Most supposed dyslexia is the direct result of language weakness.
Examples are problems with phonics due to 'fast listening' problems or naming deficits.
The language demands of reading are, in some ways, greater than those of listening and speaking. Language that is strong can compensate for some visual weakness. But nothing can compensate for language that is too weak to support the demands of reading. Seeing Backwards' does not explain reading disorder. Many people are concerned about reversals .