Jinglin Shi1, Jing Zhao2, Feng Zhao2,1, Rajeev Naidu3, Xingtao Zhou4. 1. Department of Ophthalmology, Shuguang Hospital, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China. 2. Key NHC Key Laboratory of Myopia, Ministry of Health, Department of Ophthalmology, Eye and ENT Hospital, Chinese Academy of Medical Sciences, Fudan University, 83 FenYang Road, Shanghai, 200031, China. 3. School of Medicine, The University of Sydney, Camperdown, NSW, Australia. 4. Key NHC Key Laboratory of Myopia, Ministry of Health, Department of Ophthalmology, Eye and ENT Hospital, Chinese Academy of Medical Sciences, Fudan University, 83 FenYang Road, Shanghai, 200031, China. doctzhouxingtao@163.com.
Abstract
PURPOSE: To investigate the cross-sectional area (CSA) and thickness of the ciliary muscle and their correlation with accommodative lag in hyperopic anisometropic children. METHODS: Forty children aged between 6 and 10 years with hyperopic anisometropia were recruited. The more hyperopic eye (mean refractive power of 3.51 ± 1.70 D) was compared with the less hyperopic eye (mean refractive power of 0.78 ± 1.41 D). The thickness and CSA of the ciliary muscle were measured with anterior segment optical coherence tomography (OCT) images at four meridians. The differences between the eyes and the correlations between CSA, thickness, axial length and accommodative lag were accessed. RESULTS: There was no statistically significant difference in CSA between the two groups at any meridian, except at the inferior meridian (P < 0.05). There was no statistically significant difference in ciliary muscle thickness between eyes at any meridian, except on the temporal and the nasal meridians (P < 0.05). There was a significant difference in the ratio of CSA to axial length at all meridians between the two groups (all P < 0.05). Accommodative lag was 1.65 ± 0.55 D and 0.93 ± 0.45 D in the more and less hyperopic eyes, respectively, which was a statistically significant difference (P < 0.05). There was no significant correlation between the CSA with the axial length and the accommodative lag. CONCLUSIONS: This study demonstrated a greater degree of accommodative lag in the more hyperopic eye of anisometropic children. There was no correlation among accommodative lag, axial length and CSA of the ciliary muscle with the degree of hyperopia.
PURPOSE: To investigate the cross-sectional area (CSA) and thickness of the ciliary muscle and their correlation with accommodative lag in hyperopic anisometropic children. METHODS: Forty children aged between 6 and 10 years with hyperopic anisometropia were recruited. The more hyperopic eye (mean refractive power of 3.51 ± 1.70 D) was compared with the less hyperopic eye (mean refractive power of 0.78 ± 1.41 D). The thickness and CSA of the ciliary muscle were measured with anterior segment optical coherence tomography (OCT) images at four meridians. The differences between the eyes and the correlations between CSA, thickness, axial length and accommodative lag were accessed. RESULTS: There was no statistically significant difference in CSA between the two groups at any meridian, except at the inferior meridian (P < 0.05). There was no statistically significant difference in ciliary muscle thickness between eyes at any meridian, except on the temporal and the nasal meridians (P < 0.05). There was a significant difference in the ratio of CSA to axial length at all meridians between the two groups (all P < 0.05). Accommodative lag was 1.65 ± 0.55 D and 0.93 ± 0.45 D in the more and less hyperopic eyes, respectively, which was a statistically significant difference (P < 0.05). There was no significant correlation between the CSA with the axial length and the accommodative lag. CONCLUSIONS: This study demonstrated a greater degree of accommodative lag in the more hyperopic eye of anisometropic children. There was no correlation among accommodative lag, axial length and CSA of the ciliary muscle with the degree of hyperopia.
Entities:
Keywords:
Accommodative lag; Anisometropia; Ciliary muscle; Hyperopia; OCT
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