Google - What is dyslexia? Is it primarily visual or phonemic?

Types of Dyslexia developmental sld's are word form or spelling caused by biological anomalies usually genetic in the brain at various levels morphological or synaptic from prenatal through childhood development acquired sld's are caused by brain trauma that may occur prenatally or later. Dyslexia which is a general term for reading disorders with many subgroups surface phonological word form or spelling and direct all Dyslexics do not posses the same symptoms so they break it down into three categories visuospatial difficulties speech sound difficulties correlating difficulties they read words backwards.