Abstract
Purpose :
To evaluate the effect of recession-resection procedures of the horizontal rectus muscles to correct large deviations and significant abduction deficits in complete abducence palsy.
Methods :
The medical records of a consecutive series of patients with complete acquired monocular sixth nerve palsy underwent recession-resection procedure in Zhongshan Ophthalmic Center,Sun Yet-sen University,Guangzhou, China from Janaury 2012 to December 2017 were reviewed retrospectively.
Data collected included age, sex, etiology of the abducens nerve palsy, forced duction test, pre- and postoperative deviations in the primary, abduction deficit, anomalous head posture, any induced postoperative vertical or torsional deviations.
Results :
27 cases (20males,7females) were recruited, aged from 4 to 68 years old (mean 39years).Causes including 18 trauma, 2 cerebral lessions,1 congenital,and not confirmed in 6 cases.The recession-resection procedures of the horizontal rectus were performed under general anesthesia.Medial rectus were reccessed 6-12mm using the “hanging back” suture technique with 6-0 polyglactin suture. Lateral rectus were resected 7-16mm.The mean last follow up were 2.6 months (2~36 months ) after surgery.Total successful rat were 70.4% (devtaion less than 15PD),with 6 cases(22.2%) under corrected and 2 cases(7.4%) over corrected.Median of deviation corrected from 63PD pre-op to 10PD post-op. Abduction deficiency were corrected from -5 (-4 to -8) pre-op to -3(-1~-5) post-op. No large induced postoperative vertical or torsional deviations were observed in all cases.
Conclusions :
Recession-resection procedures of the horizontal rectus muscles could effectively correct large deviations and partly restore abduction deficits in clinical complete abducence palsy.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.