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| Defocus Status of Peripheral Retina in Hyperopic ChildrenAged 4-10 Years |
| Yurong Li, Li Xie, Ling Chen, Yueyan Su, Qichang Wang |
| Department of Ophthalmology, Changsha XiangjiangAier Eye Hospital, Changsha 410000, China |
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Abstract Objective: The relative peripheral refractive errors (RPRE) of hyperopic children aged 4-10 years were measured by multispectral refractive topography (MRT), and the characteristics of RPRE distribution in different degree hyperopic children were analyzed. Methods: In this case-control study, a total of 60 hyperopic children aged 4-10 years were included, which was conducted from September 2021 to September 2022 at the Changsha Xiangjiang Aier Eye Hospital. Based on the spherical equivalent (SE) after ciliary muscle paralysis, 49 eyes were divided into the following groups: low hyperopia group (LH, 0.50 D≤SE?3.00 D), moderate hyperopia group (MH, 3.00 D≤SE?5.00 D) and high hyperopia group (HH, SE≥5.00 D). The mean values of RPRE in different regions of retina were measured by MRT. The results were recorded as follows: total refraction difference value (TRDV), 0 °-15 ° refraction difference value (RDV-15), 15 °-30 ° refraction difference value (RDV-30), 30 °-45 ° refraction difference value (RDV-45), superior refraction difference value (RDV-S), inferior refraction difference value (RDV-I), nasal refraction difference value (RDV-N), temperior refraction difference value (RDV-T). Pearson correlation was used to analyze the relationship between different degrees and peripheral retinal diopters, and the differences of different eccentricity RPRE were analyzed by univariate ANOVA. Paired sample t-test to analyze and compare superior and inferior refraction values, nasal and temperior refraction values. Results: There was a negative correlation between diopter and TRDV from low hyperopia to high hyperopia (r=-0.35, P<0.001). There were signifcant differences among 0 °-15 °, 15 °-30 ° and 30 °-45 ° (F=6.51, P=0.002; F=6.14, P=0.003; F=6.83, P=0.002). In the range of 0 °-15 ° and 15 °-30 °, the TRDV of the HH group was smaller than that of the other two groups, indicating that the myopic defocus of the HH group was the greatest. The superior defocus value of hyperopic eyes aged 4-10 years is smaller than the inferior defocus value, which is myopic defocus with a statistically signifcant difference (t=-3.44, P=0.001); the temporal defocus is smaller than the nasal defocus, indicating myopic defocus on the temporal side and hyperopic defocus on the nasal side, with a statistically signifcant difference (t=-4.01, P<0.001). Conclusions: The total retinal defocus of hyperopic children aged 4-10 years was myopic defocus, and the myopic defocus increased with the degree of hyperopia. In the range of 0 °-30 °, high hyperopic children myopic defocus value is greater than low-moderate hyperopic children. The superior defocus value of hyperopic eyes aged 4-10 years is smaller than the inferior defocus value, which is myopic defocus; the temporal defocus is smaller than the nasal defocus. The temporal side is myopic defocus, and the nasal side is hyperopic defocus.
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Received: 05 April 2023
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| Fund:TheAier Eye Hospital Group Company Limited Exploration Program (AF2103D5) |
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Corresponding Authors:
Qichang Wang, Email: wqc1115@sina.com
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