The school learning requires initially, a visual strategy in the process of information treatment. However, the elements that make up writing are seldom consistent with the reader’s optimal visual capabilities, which may interfere with vision or causing in the long run 'an vision problem'. The study consists in solving experimentally "the constraints that may arise by Arabic typography (orientation 'right to left). We assume that the quality of language comprehension is enhanced when the writing is best perceived in terms of graphics]. Thanks to the photoelectric method, eye movement recording was carried out on the sample of 160 pupils attending the second primary level. Four different tasks (body, spacing, space, justification) were applied to childrensubdivided into groups. The results demonstrate: the impact of typographical aspects of readability and the strong correlation existing between: ″changes in ocular parameters and typographic patterns″ during reading. They also detect optimal elements enabling efficient reading. Furthermore, they point to a ″progress in values according to school level and age. We consequently, suggest that the experiences object of the eye movement recording through the reading process: can constitute diagnostic to any attempt of standardization of "physical or semantic aspect" of the text that willimprove educational performance