Synoptometer Analysis of Vertical Shoot in Duane’s Retraction Syndrome

Ohtsuki, Hiroshi; Hasebe, Shinji; Tadokoro, Y; Kishimoto, Noriko; Watanabe, Susumu; Okano, Masaki

doi:10.1159/000310274

Cited by 5 publications

(2 citation statements)

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“…Others reported that this combined technique in the involved eye led to dramatic improvement in patients with moderate globe retraction on adduction. 17,18,[39][40][41] It is noteworthy that our cohort was considerably older (8.75±3.13 years) than in most other common strabismus studies. Kubota et al 23 reported that 92.7% of their patients with DRS underwent surgery after age 3 years, and Waddell et al 9 suggested that surgery for DRS should be performed before age 8 years.…”

Section: Discussionmentioning

confidence: 99%

Contralateral lateral rectus muscle recession in patients with Duane retraction syndrome type 3

Snir

Dotan

Friling

et al. 2013

Eye

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Aims The aim of this study was to evaluate the motor, sensory, functional, and head posture results of recession of the lateral rectus muscle contralateral to the involved eye in patients with exotropic Duane retraction syndrome (DRS) type 3. Methods This was a retrospective, longitudinal, observational study of a consecutive clinical case series. Of the 11 patients with DRS type 3 operated on at a tertiary medical center from 1977 to 2012, 8 underwent recession of the lateral rectus muscle contralateral to the involved eye (with combined Y-splitting of ipsilateral lateral rectus muscle in 3 of them). Full ophthalmic, orthoptic, and neurological examination was performed before and after surgery. Main outcome measures included intragroup changes in motor misalignment, abnormal head turn, ocular upshoot, and stereopsis. Results Mean patient age was 8.75 ± 3.1 years at surgery. Mean exodeviation for distance was À 17.3±3.5 prism diopters (PD) preoperatively and À 4.0±6.1 PD postoperatively; corresponding values for near were À 23.1 ± 7.2 PD and À 5.9 ± 8.7 PD. Motor deviation improved by 77% for distance (P ¼ 0.017) and 74.5% for near (P ¼ 0.01). In 7/8 patients, the postoperative residual exodeviation (distance and near) was o8.0 PD. There was an 80% improvement in head turn, from 15.3±41 before surgery to 3.1 ± 5.01 after (P ¼ 0.01). Stereopsis improved significantly in 6/8 patients. Findings remained stable during follow-up (mean duration 35.9 ± 50.8 months, range 5-132 months). Conclusions Contralateral lateral rectus muscle recession appears to be a promising technique for the treatment of moderate unilateral DRS type 3, with patients showing significant motor and functional improvement and a decrease in head turn.

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Section: Discussionmentioning

confidence: 99%

Contralateral lateral rectus muscle recession in patients with Duane retraction syndrome type 3

Snir

Dotan

Friling

et al. 2013

Eye

View full text Add to dashboard Cite

show abstract

“…There are several theories for the anomalous vertical movements in Duane syndrome: compensatory oblique overaction, compensatory overaction of the vertical rectus muscles for defective abductive action [ 6 ], paradoxical synergistic innervations between the medial rectus muscle and superior rectus muscle [ 7 ] and the Bridle effect (cocontracting horizontal recti muscles) [ 6 ]. Electromyographic studies in patients with Duane syndrome have shown paradoxical innervation of the lateral rectus muscle in adduction, which results in a taut lateral rectus muscle in attempted adduction.…”

Section: Discussionmentioning

confidence: 99%