AIM: To analyze the clinical effects of partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis.

METHODS: The conditions of 22 patients(25 eyes)who underwent partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis were retrospectively reviewed. The following data were analyzed: 1)the angle of deviation of primary position; 2)the presence of diploma in the primary position; 3)the presence of compensatory head posture; 4)the motility of the affected eye. All of the patients attended 6mo postoperative follow-up examinations.

RESULTS: According to the results of examinations before and during operation, different operations were performed: 2 eyes were treated with partial rectus muscle transportation, 20 eyes were treated with recession of antagonistic muscle of paralytic rectus muscle combined with partial rectus muscle transportation, 3 eyes were treated with recession of antagonistic muscle, partial rectus muscle transportation and recession of yoke muscle. Twenty patients were orthotropia in the primary position, the diploma and abnormal head posture were eliminated. Two patients with binocular lateral rectus muscles paralysis were in mild undercorrection which were resolved by wearing 8^△ and 10^△ prisms respectively. The procedure improved strabismus of 25 eyes from 100.23^△±42.61^△ preoperatively to 0.82^△±2.67^△ postoperatively(t=10.797,P<0.001). Ocular movement was improved from -4.52±0.51 preoperatively to -2.68±0.63 postoperatively(t=-19.468, P<0.001).

CONCLUSION: Partial rectus muscle transportation procedure for paralytic strabismus due to single rectus muscle paralysis can effectively correct the primary position in paralytic strabismus, eliminate the presence of diploma in primary position and abnormal head posture, and improve the ocular motility, which provides content clinical effects.