·AIM:To evaluate and analyze binocular symptoms on convergence weakness patients by Sheard’s criteria.·METHODS:Eighteen patients were selected.For each subject,their oculomotor function included refraction,distance and near disassociated phoria,distance and near fusional convergence,vergence facility,near point of convergence,relative accommodation,accommodation facility and amplitude.Data were analyzed in light of Morgan normal values and Sheard criteria.·RESULTS:There were 14 cases(78%)who weren’t fit to Sheard criterion and they were demand to average(3.47±2.83)△ BO prisms on their nearly work.·CONCLUSION:Sheard criteria is effective diagnostic aids or guides to predict convergence weakness patients.·