Treatment of dissociated vertical deviation by combined ‎recession–resection of the superior rectus muscle versus ‎recession with posterior fixation suture

Faculty Medicine Year: 2022
Type of Publication: ZU Hosted Pages:
Authors:
Journal: Open Ophthalmology Journal Bentham Volume:
Keywords : Treatment , dissociated vertical deviation , combined ‎recession–resection    
Abstract:
BACKGROUND: Management of dissociated vertical deviation (DVD) is still a matter of controversy in strabismus ‎practice. Different surgical techniques are available ranging from weakening of the superior rectus or inferior oblique ‎muscles to strengthening of the inferior rectus muscle, with variable success rates.‎ OBJECTIVE: To report the outcomes of correcting DVD by combined recession-resection of the superior rectus muscle ‎and to compare the results with those of superior rectus muscle (SR) recession with posterior fixation sutures.‎ METHODSs: The medical records of patients who had surgical correction for DVD were retrospectively reviewed. Two ‎groups of patients were identified; Group I (29 patients) were treated with combined recession –resection of the SR and ‎group II (37 patients) were treated by SR recession with posterior fixation sutures (Faden). Collected preoperative data ‎included age, best corrected visual acuity, presence of amblyopia, history of previous surgeries and angle of DVD. ‎Operative data as amount of SR recession and operative time were also extracted. The outcome measures taken at the final ‎postoperative follow up visit included the surgical success rate which is identified as the percentage of patients with absent ‎manifest DVD and the amount of residual latent deviation measured by prism cover test. ‎ RESULTS: The mean follow up period for all patients was 22.6 ±4.6 months. In the last follow up visit, the surgical success ‎rate was 76% in combined recession-resection group and 73% in the faden group with no significant difference between ‎both groups (p=0.8). No significant difference was found in the residual latent deviation in both groups as well. The ‎recorded surgical time was significantly shorter in the combined recession- resection group (p<0.001). The reported ‎complications included mild temporary limitation of elevation without hypotropia in 5 patients (2 in group I (7 %) and 3 ‎patients in group II (8%)) with no significant difference between both groups (p=0.8). ‎
   
     
 
       

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