Eye Strain
     A separate survey
        shows Live Ink
          resulted in
             a 74 percent reduction
                 in the frequency
            of eye-strain symptoms.
                                                                   
     Relating this
         to eye movement study results,
       it is reasonable
         to hypothesize
           that the lower rate
                of eye-strain symptoms
            may be the result
               of fewer eye-movements
                  and fewer regressions
              to previously read words.