Motility of the eyes serves to follow and fix the object of interest. There are three basic movements: fixations (so that the photoreceptors of the retina do not saturate and the image disappears, there is an imperceptible and involuntary movement), saccadics (they are very fast movements to fix in a moment what interests us) and pursuits (slower movements that pursue the objective).
The typical symptomatology is: excessive head movements, frequent reading losses, skipping lines or words, slow reading speed, low understanding and difficulties in care. In general, there are difficulties with reading. People who have learning problems often also have motility problems.
The treatment is with visual therapy.