Dyslexia was originally used to describe someone who had lost the ability to read following a head injury. (It comes from the German word dyslexie, which was made up from Greek dys- "bad, abnormal, difficult" + lexis "word". Nowadays this type of dyslexia is called deep dyslexia or trauma dyslexia. Someone with dyslexia might have the following issues:- Seeing some letters as backwards or upside down. Seeing text appearing to jump around on a page. The inability to tell the difference between letters and numbers that look similar in shape, such as lower case letters (q and p) & (d and b), and numbers (10 & 01). The numbers (2, 3, 4, 5, 6, 7, & 9) could be confusing while (8 & 0) would not be, due to being distinctive in shape. Similarly, distinctive lower case letters (i, m, o, v, & w) and upper case (A, H, I, M, O, T, U, V, W, X, & Y) are typical in shape and therefore not as likely to be confusing. The inability to tell the diffe...