Horizontal saccadic velocity in patients with exotropia before and after strabismus surgery

Author(s):  
Miharu Mihara ◽  
Kazuya Fujita ◽  
Atsushi Hayashi ◽  
Ken Kakeue ◽  
Ryoi Tamura
2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Miharu Mihara ◽  
Atsushi Hayashi ◽  
Kazuya Fujita ◽  
Ken Kakeue ◽  
Ryoi Tamura

Purpose. The effects of strabismus surgery on eye movement are not known in detail, as few studies have compared saccade velocities before and after strabismus surgery. In this study, horizontal saccades were recorded using an eye-tracker in patients with only exotropia to compare the peak velocities (PVs), before and after undergoing strabismus surgery of the same type (unilateral resection and recession). Methods. Horizontal saccades of monocular vision were recorded using an eye-tracking device in 18 patients with exotropia and 20 normal subjects. All patients were examined using the same method after strabismus surgery. Results. The PVs of adduction and abduction in the patients were higher than those in the normal subjects (in dominant eye, P=0.032 for adduction and P=0.049 for abduction; in nondominant eye, P=0.016 for adduction and P=0.037 for abduction). Following the surgery, the PVs of abduction of the surgical eye (nondominant eye) decreased to the level of the normal subjects (P=0.016). However, there were no correlations between changes in the PVs and the extent of surgery (resection and recession). Conclusion. Strabismus surgery normalized the patient’s increased PV in the operated eye for abduction of horizontal saccade. Not only peripheral (extraocular muscle) but also central sensory-motor mechanisms may be involved in the changes in PV of horizontal saccades, both of which could result from the improvement of the primary eye position.


2017 ◽  
Vol 16 (1) ◽  
pp. 14-18
Author(s):  
Sabina Shrestha ◽  
Aparajita Manoranjan ◽  
Sushan Man Shrestha

Introduction: Strabismus affects the quality of life of adults both in functional and psychosocial aspect of life. This study was conducted to compare the health related quality of life in adults before and after strabismus surgery.Methods: It was a prospective quantitative study conducted in Nepal Eye Hospital from Sep 2015 to July 2016. Thirty one adult participants with strabismus undergoing strabismus surgery completed the study. Twenty open ended adult strabismus questionnaire (AS-20) were used to assess the health related quality of life of adults before and one month after strabismus surgery.Results: The overall median score of adult strabismus questionnaire for quality of life improved from 68.75 (Interquartile range (IQR 25) to 91.25 (IQR 17.5) after strabismus surgery (p value < 0.00). Similarly, the median function subscale and median psychosocial subscale also improved from 72 (IQR 25) to 95 (10) and from 55 (IQR 37.5) to 90 (IQR 15) respectively after surgery. Conclusion: The quality of life of adult strabismic patients improved significantly after stabismus surgery.


Author(s):  
Maria P. Bucci ◽  
Hayette Soufi ◽  
Philippe Villeneuve ◽  
Lucile Colleville ◽  
Emmanuel Bui-Quoc ◽  
...  

2020 ◽  
Author(s):  
danyi mao ◽  
jing lin ◽  
lina chen ◽  
jiying luo ◽  
jianhua yan

Abstract Purposes:To assess the health-related quality of life (HRQOL) and hospital anxiety and depression scale (HADS) in Chinese children with intermittent exotropia (IXT) before and after strabismus surgery.Patients and Methods: The records of children with IXT who underwent strabismus surgery at the Zhongshan Ophthalmic Center, of Sun Yat-sen University, China over the period from January 1, 2016 to December 31, 2018 were retrospectively reviewed. All children underwent ophthalmic and orthoptic examinations including the prism and alternate cover test, fusion function by synoptophore, stereoacuity and Newcastle control score. With use of the Intermittent Exotropia Questionnaire (IXTQ), the pre- and post-operative HRQOL and pre-operative HADS were assessed within these children and their parents.Results: A total of 389 children were eligible for inclusion (47.8% male, 52.2% female, mean + SD age = 8.17 ± 2.81). Pre-operative IXTQ scores in both children and their parents were significantly correlated with near stereoacuity (P = 0.029 and P = 0.015, respectively). The angle of deviation at near vision showed a negative linear relationship with visual function (P = 0.026) and psychological (P = 0.019) scores and opinions regarding surgery(P = 0.024). HADS scores were also related with near stereoacuity (P < 0.05). After surgery, both children’s and parents’ IXTQs significantly improved (p༜0.01). Children’ IXTQ scores were related to the angle of deviation at distance and their psychological and visual function scores showed a negative relationship with the angle of deviation at near vision (P < 0.05).Conclusion: Children and parents HRQOL and HADS were associated with near stereoacuity. Parents usually attend more readily to the angle of deviation at near in their IXT children. HRQOL improved significantly after surgery and can be used as one of the indices for pre-operative evaluation, but is not recommended as a criteria for surgical intervention.These first two authors contributed equally to this work


2009 ◽  
Vol 50 (5) ◽  
pp. 756
Author(s):  
Soolienah Rhiu ◽  
Seung Ah Chung ◽  
Yoon Hee Chang ◽  
Jong Bok Lee

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Danyi Mao ◽  
Jing Lin ◽  
Lina Chen ◽  
Jiying Luo ◽  
Jianhua Yan

Abstract Background Intermittent exotropia (IXT) is the most common form of exotropia in children. In addition to cosmetic effects and loss of stereoscopic function, IXT may negatively impact the psychological well-being of children and their parents. The purpose of this study was to assess the patient-reported outcomes of Chinese children with IXT before and after strabismus surgery. Methods The records of children with IXT who underwent strabismus surgery at the Zhongshan Ophthalmic Center of Sun Yat-sen University, China over the period from January 1, 2016 to December 31, 2018 were prospectively recruited. All children underwent ophthalmic and orthoptic examinations, including the prism and alternate cover test, fusion function by synoptophore, stereoacuity and Newcastle control score. Two patient-reported outcome measures were used: the intermittent Exotropia Questionnaire (IXTQ) to measure disease-specific health-related quality of life (HRQOL) and the Hospital Anxiety and Depression Scale (HADS) to measure anxiety and depression. Patient-reported outcome measurements were made before and after surgery with responses from children and their parents. Results A total of 389 children were eligible for inclusion (47.8% male, 52.2% female, mean + SD age = 8.17 ± 2.81). Preoperative IXTQ scores in both children (48.21 ± 26.2) and their parents (44.6 ± 25.68) were significantly correlated with near stereoacuity (P = 0.029 and P = 0.015, respectively). The angle of deviation at near vision showed a negative linear relationship with visual function (P = 0.026) and psychological (P = 0.019) scores as well as opinions regarding surgery (P = 0.024). HADS scores (anxiety scale score: 11 ± 2.92, depression scale score: 10.44 ± 2.9) were also related to near stereoacuity (P < 0.05). After surgery, both children’s (74.83 ± 16.59) and parents’ (68.57 ± 17.06) IXTQ scores significantly improved (p<0.01). Children’s IXTQ scores were related to the angle of deviation at distance, and their psychological and visual function scores showed a negative relationship with the angle of deviation at near vision (P < 0.05). Conclusion Children and parents’ HRQOL and HADS were associated with near stereoacuity. Parents usually attend more readily to the angle of deviation at near in their IXT children. HRQOL improved significantly after surgery and can be used as one of the indices for preoperative evaluation but is not recommended as a criterion for surgical intervention.


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