Dalziel C C
Am J Optom Physiol Opt. 1981 Jan;58(1):21-3. doi: 10.1097/00006324-198101000-00006.
One hundred convergence insufficiency patients who did not meet Sheard's criterion at near were given a program of in-office and at-home training. The objective was to see if they would meet Sheard's criterion after training. Results were analyzed in terms of the numbers successfully meeting this criterion as well as other criteria, i.e. Percival's, elimination of symptoms, improvement of stereopsis, and elimination of fixation disparity. Of the 100 patients, 84 successfully met Sheard's criterion after therapy. Failure to meet Sheard's criterion correlated well with having subjective symptoms.
100例近视力不满足谢尔德准则的集合不足患者接受了门诊和家庭训练计划。目的是观察他们训练后是否能满足谢尔德准则。根据成功达到该准则以及其他准则（即珀西瓦尔准则、症状消除、立体视改善和注视差异消除）的人数对结果进行分析。100例患者中，84例在治疗后成功达到谢尔德准则。未达到谢尔德准则与有主观症状密切相关。
