Relationship between Control Grade, Stereoacuity and Surgical Success in Basic Intermittent Exotropia
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This study was conducted to identify the relationship between control grade, stereoacuity and surgical success in basic intermittent exotropia.This retrospective study involved 44 basic intermittent exotropia patients who underwent strabismus surgery and completed at least 6 months of follow-up. The 44 patients were divided into three subgroups according to their control grade: group 1 (good control group, n = 12), group 2 (fair control group, n = 18), and group 3 (poor control group, n = 14). Evaluation was done to identify the relationships between near and distance stereoacuity and control grade, and between surgical success and control grade. Surgical success was defined as ocular alignment between 5 prism diopters esodeviation and 10 prism diopters exodeviation in the primary position at the final visit.Mean near stereoacuity measured by the graded circle test was 57.50 seconds of arc (seconds) in group 1, 77.77 seconds in group 2, and 131.43 seconds in group 3 (p < 0.01). Mean distance steroacuity measured by Mentor B-VAT II BVS contour circle was 108.33 seconds in group 1, 148.33 seconds in group 2, and 262.82 seconds in group 3 (p < 0.01). Ten patients (83.33%) in group 1, 12 (66.67%) in group 2, and 9 (64.29%) in group 3 obtained surgical success (p = 0.28).In basic intermittent exotropia, better control grade was significantly accompanied by better stereoacuity. Better control grade was accompanied by higher surgical success rate but with no statistical significance.Keywords:
Stereoscopic acuity
Intermittent exotropia
Stereoscopic acuity
Intermittent exotropia
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Stereoscopic acuity
Intermittent exotropia
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Objective To evaluate the postoperative retinal correspondence and stereoacuity in intermitent exotropia. Methods Forty patients with intermitent exotropia were followed up for 1-5 years for retinal correspondence and stereo_auity after operation. Results Normal retinal correspondence and stereo_auity were observed in 85.00% and 80.00% patients after operation. Conclusion The anomalous retinal correspondence and abnormal stereopsis may convert after intermitent exotropia surgery.
Stereoscopic acuity
Intermittent exotropia
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Stereoscopic acuity
Intermittent exotropia
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Objective To investigate children intermittent exotropia treatment,analysis stereopsis recovery influencing factors after treatment.Methods Retrospectively analyzed clinical data of 70 consecutive patients of our hospital with intermittent exotropia,from Jan 2010 to Mar 2012.Divided into three groups based on stereoacuity,Compared Preoperative with postoperative stereopsis mean,analyze the influential factors of stereopsis recovery.Results The three group stereopsis mean were lower than the preoperative,had Significant difference,P0.05.In univariate analysis,found that the strabismus age,duration,whether the control is the body and postoperative three-dimensional visual training had significant impact by univariate analysis(P0.05).Multivariate logistic regression,that the strabismus age,duration,postoperative three-dimensional visual training had significant impact by univariate analysis(P0.05).Conclusion Stereoscopic vision in patients after surgery were improved,according to recovery influencing factors to improve the stereopsis recovery effect.
Stereoscopic acuity
Intermittent exotropia
Univariate analysis
Univariate
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To evaluate the relationship between initial postoperative overcorrection and long-term surgical success in exotropia patients.The medical records of 46 patients who underwent surgery for intermittent exotropia after the age of 18 were enrolled. Enrolled patients also had at least 2 years of postoperative follow-up. Based on the initial postoperative deviation at distance measured by prism and the alternating cover test at 1 week, patients were assigned to one of the following groups: group A included patients who demonstrated any esodeviation, while group B included patients who showed orthophoria to exodeviation of 10 prism diopters. The records were analyzed to determine the preoperative deviation with stereoacuity and postoperative deviations with stereoacuity at the follow-up examinations at the following intervals: 1 week; 1, 3, and 6 months; and 1 and 2 years. A comparison between groups for demographic data and preoperative and postoperative angles of deviation was performed using analysis of variance.Of the 46 patients with intermittent exotropia included in this study, 18 (39%) belonged to group A, while 28 (73%) belonged to group B. The postoperative angle of deviation for distant fixation until 2 years of follow-up showed statistically significant differences in each group (p < 0.003 in all comparisons). The amount of exodrift until 2 years in group A (from ?9.7 ± 6.1 to 1.6 ± 3.7) was greater than that in group B (from 2.0 ± 2.7 to 6.8 ± 5.6). The long-term surgical success rate within 2 years of surgery was significantly better in group A than in group B (p = 0.027). The number of patients with intermittent diplopia and the duration of diplopia were greater in group A (n = 8) than in group B (n = 2).Long-term surgical success was achieved in 89% of patients who were initially overcorrected. Overcorrection of an average of 10 prism diopters at the first postoperative week was found to be associated with a more favorable long-term surgical outcome.
Stereoscopic acuity
Intermittent exotropia
Medical record
Minimum deviation
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Stereoscopic acuity
Vergence (optics)
Intermittent exotropia
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Objective To investigate the long-term stereopsis result after surgery for intermittent exotropia and constant exotropia. Methods A retrospective analysis was done in clinical data of 124 patients with intermittent exotropia or constant exotropia who underwent surgery for strabotomy.Of whom,there were 64 with intermittent exotropia(group A),36 with constant exotropia with a previous intermittent history(group B),and 24 with constant exotropia without a previous intermittent history(group C).The postoperative residual strabismus and stereopsis were compared among the three groups. Results There were no significant differences among the three groups with regard to success rate of correction of eye position(P0.05).The differences among the three groups in terms of postoperative binocular vision and normal distant stereopsis were significant(χ2=56.523,15.039;P0.05),in which,the success rate in group A was higher than groups B and C,and the difference between group B and group C was not significant(P0.05).The difference of rough stereopsis between groups 1and 2was not significant,but both of them were than than that of group 3(χ2=27.792,P0.05). Conclusion Patients with constant exotropia who have a history of intermission will have a better postoperative long-term recovery of rough stereopsis than those without,and the recovery of binocular vision and distant stereoacuity was better as well.
Intermittent exotropia
Stereoscopic acuity
Strabismus Surgery
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Intermittent exotropia
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Here, we compared sensory outcomes between patients with successful motor outcomes and recurrent exotropia after intermittent exotropia surgery. We retrospectively analyzed 303 patients who underwent surgery for intermittent exotropia, divided into two groups: successful motor outcome defined as an alignment between 10 prism diopters (PD) exodeviation and 5PD esodeviation at the final follow-up (Group A, n = 177) and residual or recurrent exotropia defined as exodeviation > 10 PD (Group B, n = 126). Preoperative and postoperative (at final visit) sensory outcomes were compared using the Titmus stereotest and distance Worth 4-dot test. Stereoacuity significantly improved postoperatively in both successful motor outcome group (Group A) and residual or recurrent exotropia group (Group B). However, stereoacuity did not differ between groups preoperatively and postoperatively. On the other hand, fusion rates for the Worth 4-dot test were significantly higher in group A than in group B, preoperatively and postoperatively, and significantly increased postoperatively only in group A. Therefore, the distance Worth 4-dot test may be useful for evaluating postoperative prognosis and preoperative sensory status.
Intermittent exotropia
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