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Comparing myopic error in patients with basic and convergence insufficiency intermittent exotropia in China

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机构： [1]Department of Ophthalmology & Clinical Centre of Optometry, Peking University People’s Hospital, Beijing, China [2]Eye Disease and Optometry Institute, Peking University People’s Hospital, Beijing, China [3]Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China [4]College of Optometry, Peking University Health Science Center, Beijing, China

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关键词： Intermittent exotropia Myopia Ocular dominance Convergence insufficiency Anisometropia

摘要：

To compare the degree of myopia between the dominant and non-dominant eyes in teenagers with intermittent exotropia (IXT) in China.A total of 199 IXT patients with myopia were included in this retrospective study and were divided into two groups according to the difference between near and distance exodeviation: basic IXT and convergence insufficiency (CI) IXT. Refractive errors were analyzed by spherical equivalent (SE) values. Patients were further stratified into anisometropia group and non-anisometropia group based on binocular SE values difference greater than 1.0D or not.There were 127 patients in the CI IXT group, with a near deviation of 46.94 ± 20.53 prism diopters (PD) and a distance deviation of 28.36 ± 14.34 PD, and there were 72 (36.2%) patients in the basic IXT group, with a near deviation of 37.68 ± 22.21 PD and a distance deviation angle of 33.21 ± 23.96 PD. The near exodeviation was significantly larger in the CI group than in the basic IXT group(P < 0.001). In the CI IXT group, the mean SE was - 2.09 ± 1.45 diopters (D) in the dominant eye and - 2.53 ± 1.44D in the non-dominant eye, while in the basic IXT group, the mean SE was - 2.46 ± 1.56D in the dominant eye and - 2.89 ± 1.37D in the non-dominant eye. The anisometropia group included 43 patients, while non-anisometropia group included 156 patients. The near and distance exodeviation in the anisometropia group were 45.26 ± 24.41 PD and 33.53 ± 23.31 PD, respectively, and those in the non-anisometropia group were 43.42 ± 20.69 PD and 29.07 ± 16.84 PD, respectively. There were no significant differences in near and distance deviation (P = 0.78 and P = 0.73 respectively) between the two groups. The SE of the dominant eye was less myopic than of the non-dominant eyes in both the CI and anisometropia groups (P = 0.002 and P < 0.001, respectively).Our study revealed that convergence insufficiency IXT is more common than the basic type in pediatric myopic population and is characterized by higher inter-eye differences of myopia. The dominant eye was found to be less myopic in IXT patients, particularly in those with convergence insufficiency and anisometropia.© 2023. The Author(s).

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出版当年[2022]版：

大类 | 4 区医学

小类 | 4 区眼科学

最新[2023]版：

大类 | 4 区医学

小类 | 3 区眼科学

第一作者：

第一作者机构： [1]Department of Ophthalmology & Clinical Centre of Optometry, Peking University People’s Hospital, Beijing, China [2]Eye Disease and Optometry Institute, Peking University People’s Hospital, Beijing, China [3]Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China [4]College of Optometry, Peking University Health Science Center, Beijing, China

通讯作者：

通讯机构： [1]Department of Ophthalmology & Clinical Centre of Optometry, Peking University People’s Hospital, Beijing, China [2]Eye Disease and Optometry Institute, Peking University People’s Hospital, Beijing, China [3]Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China [4]College of Optometry, Peking University Health Science Center, Beijing, China

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Comparing myopic error in patients with basic and convergence insufficiency intermittent exotropia in China

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