Barnhardt, C. ., Cotter, S. ., Mitchell, L. ., Scheiman, M. ., Kulp, M. ., Trial Study Group, C. I. T. ., & Good, W. V. (2012). Symptoms in children with convergence insufficiency: before and after treatment. Optometry and Vision Science , 89(10), 1512-20. 10.1097/opx.0b013e318269c8f9 (Original work published 2012)
Carmen Barnhardt
Rouse, M. ., Borsting, E. ., Mitchell, L. ., Cotter, S. ., Kulp, M. ., Scheiman, M. ., … Good, W. V. (2009). Validity of the convergence insufficiency symptom survey: a confirmatory study. Optometry and Vision Science , 86(4), 357-63. 10.1097/OPX.0b013e3181989252 (Original work published 2009)