Image by moriza via Flickr"But, students whose learning-related visual skills are challenged by ocular motility deficits of either their saccadic or pursuits eye movements may have a very difficult time completing the assignment. Since these students have not yet developed adequate automatic control of their eye muscles (there are six muscles connected to each eye), they may not be able to hold a visual fixation on a single math problem long enough to find it in the first place. So, the paper they turn in may look like a piece of Swiss cheese because so many problems are left undone. In addition, for the same visual reason, these students may start to answer one problem, look away for a second (perhaps to look up while thinking or trying to remember the math fact) and be unable to find the problem again. So the answer to one problem may be written on a different problem nearby."
Eye Can Too! Read: Incomplete Math Worksheets May Indicate Learning-Related Visual Issues: