Prevalence, risk factors and clinical features of sensory A-V pattern exotropia

AIM: To investigate the potential mechanisms of A-V pattern and evaluate the surgical outcomes used in the treatment of sensory exotropia. METHODS: The medical records of patients with sensory A-V pattern exotropia who underwent strabismus surgery between May 2014 to June 2019 was retrospectively re...

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Main Authors: Bin-Bin Zhu, Shi-Yu Tang, Xiang-Jun Wang, Li-Cheng Fu, Jian-Hua Yan
Format: Article
Language:English
Published: Press of International Journal of Ophthalmology (IJO PRESS) 2025-02-01
Series:International Journal of Ophthalmology
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Online Access:http://ies.ijo.cn/en_publish/2025/2/20250217.pdf
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author Bin-Bin Zhu
Shi-Yu Tang
Xiang-Jun Wang
Li-Cheng Fu
Jian-Hua Yan
author_facet Bin-Bin Zhu
Shi-Yu Tang
Xiang-Jun Wang
Li-Cheng Fu
Jian-Hua Yan
author_sort Bin-Bin Zhu
collection DOAJ
description AIM: To investigate the potential mechanisms of A-V pattern and evaluate the surgical outcomes used in the treatment of sensory exotropia. METHODS: The medical records of patients with sensory A-V pattern exotropia who underwent strabismus surgery between May 2014 to June 2019 was retrospectively reviewed. The control group included sensory exotropia patients without A-V pattern and concomitant A-V pattern exotropia patients with normal vision who undergone strabismus surgery over this same time period. Ocular alignment, best corrected visual acuity, oblique muscle function, and stereopsis records were collected. RESULTS: Among the 843 eligible patients, 91 (10.79%; 39 males and 52 females) had A-pattern (54, 6.4%) or V-pattern (37, 4.4%). Age at onset of vision impairment was 4±5y and at the time of surgery was 25±9y. Statistically significant negative correlations were present between impaired visual acuity and the pre-operative exodeviation (r=-0.198, P=0.016) and patterns (r=-0.207, P=0.015). Age at surgery and exodeviation in patients with concomitant A-V pattern exotropia was significantly earlier as compared with that of sensory A-V pattern exotropia and sensory exotropia (both P<0.0001). There were no significant differences in these clinical variables between sensory exotropia with or without A-V pattern. Deviation and pattern were significantly reduced in patients receiving horizontal rectus surgery with or without oblique muscle surgery (both P<0.0001). CONCLUSION: The prevalence of sensory A-V pattern exotropia in our study is 10.79%. Visual acuity represents an important factor contributing to the occurrence and development of A-V pattern. Isolated horizontal rectus surgery can provide a good option for the correction of sensory A-V pattern exotropia.
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publishDate 2025-02-01
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spelling doaj-art-dda970ea29e74f6d810cee4cce4578542025-01-16T07:54:35ZengPress of International Journal of Ophthalmology (IJO PRESS)International Journal of Ophthalmology2222-39592227-48982025-02-0118232332910.18240/ijo.2025.02.1720250217Prevalence, risk factors and clinical features of sensory A-V pattern exotropiaBin-Bin Zhu0Shi-Yu Tang1Xiang-Jun Wang2Li-Cheng Fu3Jian-Hua Yan4Jian-Hua Yan. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, Guangdong Province, China. yanjh2011@126.comState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, Guangdong Province, ChinaState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, Guangdong Province, ChinaState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, Guangdong Province, ChinaState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou 510060, Guangdong Province, ChinaAIM: To investigate the potential mechanisms of A-V pattern and evaluate the surgical outcomes used in the treatment of sensory exotropia. METHODS: The medical records of patients with sensory A-V pattern exotropia who underwent strabismus surgery between May 2014 to June 2019 was retrospectively reviewed. The control group included sensory exotropia patients without A-V pattern and concomitant A-V pattern exotropia patients with normal vision who undergone strabismus surgery over this same time period. Ocular alignment, best corrected visual acuity, oblique muscle function, and stereopsis records were collected. RESULTS: Among the 843 eligible patients, 91 (10.79%; 39 males and 52 females) had A-pattern (54, 6.4%) or V-pattern (37, 4.4%). Age at onset of vision impairment was 4±5y and at the time of surgery was 25±9y. Statistically significant negative correlations were present between impaired visual acuity and the pre-operative exodeviation (r=-0.198, P=0.016) and patterns (r=-0.207, P=0.015). Age at surgery and exodeviation in patients with concomitant A-V pattern exotropia was significantly earlier as compared with that of sensory A-V pattern exotropia and sensory exotropia (both P<0.0001). There were no significant differences in these clinical variables between sensory exotropia with or without A-V pattern. Deviation and pattern were significantly reduced in patients receiving horizontal rectus surgery with or without oblique muscle surgery (both P<0.0001). CONCLUSION: The prevalence of sensory A-V pattern exotropia in our study is 10.79%. Visual acuity represents an important factor contributing to the occurrence and development of A-V pattern. Isolated horizontal rectus surgery can provide a good option for the correction of sensory A-V pattern exotropia.http://ies.ijo.cn/en_publish/2025/2/20250217.pdfsensory exotropiaa-v patternoblique muscle dysfunctionhorizontal rectus surgery
spellingShingle Bin-Bin Zhu
Shi-Yu Tang
Xiang-Jun Wang
Li-Cheng Fu
Jian-Hua Yan
Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
International Journal of Ophthalmology
sensory exotropia
a-v pattern
oblique muscle dysfunction
horizontal rectus surgery
title Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
title_full Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
title_fullStr Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
title_full_unstemmed Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
title_short Prevalence, risk factors and clinical features of sensory A-V pattern exotropia
title_sort prevalence risk factors and clinical features of sensory a v pattern exotropia
topic sensory exotropia
a-v pattern
oblique muscle dysfunction
horizontal rectus surgery
url http://ies.ijo.cn/en_publish/2025/2/20250217.pdf
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AT lichengfu prevalenceriskfactorsandclinicalfeaturesofsensoryavpatternexotropia
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