Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years
AIM: To investigate the distribution of refractive parameters and theirs correlation with spherical equivalent(SE)in preschool children aged 3 to 6 years, and evaluate the accuracy of each screening index in diagnosing refractive errors.METHODS: Cross-sectional study. A total of 791 preschool childr...
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| Format: | Article |
| Language: | English |
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Press of International Journal of Ophthalmology (IJO PRESS)
2023-07-01
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| Series: | Guoji Yanke Zazhi |
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| Online Access: | http://ies.ijo.cn/cn_publish/2023/7/202307025.pdf |
| _version_ | 1797783268065542144 |
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| author | Tong Li Rui Yu Feng-Yi Zhang Ya-Tong Wang Hao Xu Hong-Lian Gao Lei Zhang |
| author_facet | Tong Li Rui Yu Feng-Yi Zhang Ya-Tong Wang Hao Xu Hong-Lian Gao Lei Zhang |
| author_sort | Tong Li |
| collection | DOAJ |
| description | AIM: To investigate the distribution of refractive parameters and theirs correlation with spherical equivalent(SE)in preschool children aged 3 to 6 years, and evaluate the accuracy of each screening index in diagnosing refractive errors.METHODS: Cross-sectional study. A total of 791 preschool children, ranging from 3 to 6 years old, who consented to undergo mydriatic refraction were selected. Axial length(AL), corneal refractive power(K), and SE were measured after microcoria optometry and mydriatic optometry. Additionally, the corneal radius of curvature(CR)and the axial length/corneal radius of curvature(AL/CR)ratio were calculated.RESULTS: A total of 791 students participated in the study, out of which 400(50.6%)were male and 391(49.4%)were female. The mean values for AL, CR, AL/CR, and SE were 22.62±0.94mm, 7.81±0.29mm, 2.90±0.09, and +1.95±1.31D, respectively. AL, CR, and AL/CR increased with age. AL and CR were significantly higher in males than in females(all P<0.001), while there was no statistically significant difference between AL/CR and SE in males and females(P=0.82, 0.19). The correlation coefficients of SE and AL/CR, AL and CR were -0.86, -0.50 and 0.16, respectively. The results of multiple linear regression analysis indicate that for each unit increase in AL/CR, there was a corresponding shift of 10.91 towards myopia in SE. The sensitivity of AL/CR in screening for myopia was 94.44%, with a specificity of 90.46% and a Youden index of 0.84. For screening myopia under microcoria optometry, the sensitivity was 100%, with a specificity of 66.09% and a Youden index of 0.66. The area under the curve was 0.967 and 0.809 when the ROC curves were plotted using AL/CR and AL as indicators for screening myopia, respectively.CONCLUSION: For large group screening activities where mydriatic optometry is not feasible, AL/CR is better for evaluating refractive status and identifying children with myopia and hyperopia reserve that are lower than normal for their age, compared to AL and microcoria optometry. |
| first_indexed | 2024-03-13T00:23:38Z |
| format | Article |
| id | doaj.art-e1d363fe72d547cc96a0a63d0b4547e1 |
| institution | Directory Open Access Journal |
| issn | 1672-5123 |
| language | English |
| last_indexed | 2024-03-13T00:23:38Z |
| publishDate | 2023-07-01 |
| publisher | Press of International Journal of Ophthalmology (IJO PRESS) |
| record_format | Article |
| series | Guoji Yanke Zazhi |
| spelling | doaj.art-e1d363fe72d547cc96a0a63d0b4547e12023-07-11T08:08:47ZengPress of International Journal of Ophthalmology (IJO PRESS)Guoji Yanke Zazhi1672-51232023-07-012371189119510.3980/j.issn.1672-5123.2023.7.25202307025Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 yearsTong Li0Rui Yu1Feng-Yi Zhang2Ya-Tong Wang3Hao Xu4Hong-Lian Gao5Lei Zhang6Department of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, ChinaDepartment of Ophthalmology, Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310000, Zhejiang Province, ChinaDepartment of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, ChinaDepartment of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, ChinaAffiliated Eye Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250000, Shandong Province, ChinaDepartment of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, ChinaDepartment of Ophthalmology, Binzhou Medical University Hospital, Binzhou 256600, Shandong Province, ChinaAIM: To investigate the distribution of refractive parameters and theirs correlation with spherical equivalent(SE)in preschool children aged 3 to 6 years, and evaluate the accuracy of each screening index in diagnosing refractive errors.METHODS: Cross-sectional study. A total of 791 preschool children, ranging from 3 to 6 years old, who consented to undergo mydriatic refraction were selected. Axial length(AL), corneal refractive power(K), and SE were measured after microcoria optometry and mydriatic optometry. Additionally, the corneal radius of curvature(CR)and the axial length/corneal radius of curvature(AL/CR)ratio were calculated.RESULTS: A total of 791 students participated in the study, out of which 400(50.6%)were male and 391(49.4%)were female. The mean values for AL, CR, AL/CR, and SE were 22.62±0.94mm, 7.81±0.29mm, 2.90±0.09, and +1.95±1.31D, respectively. AL, CR, and AL/CR increased with age. AL and CR were significantly higher in males than in females(all P<0.001), while there was no statistically significant difference between AL/CR and SE in males and females(P=0.82, 0.19). The correlation coefficients of SE and AL/CR, AL and CR were -0.86, -0.50 and 0.16, respectively. The results of multiple linear regression analysis indicate that for each unit increase in AL/CR, there was a corresponding shift of 10.91 towards myopia in SE. The sensitivity of AL/CR in screening for myopia was 94.44%, with a specificity of 90.46% and a Youden index of 0.84. For screening myopia under microcoria optometry, the sensitivity was 100%, with a specificity of 66.09% and a Youden index of 0.66. The area under the curve was 0.967 and 0.809 when the ROC curves were plotted using AL/CR and AL as indicators for screening myopia, respectively.CONCLUSION: For large group screening activities where mydriatic optometry is not feasible, AL/CR is better for evaluating refractive status and identifying children with myopia and hyperopia reserve that are lower than normal for their age, compared to AL and microcoria optometry.http://ies.ijo.cn/cn_publish/2023/7/202307025.pdfpreschool childrenaxial lengthaxial length/corneal radius of curvature ratio(al/cr)hyperopia reserverefractive errorsmyopiaspherical equivalent |
| spellingShingle | Tong Li Rui Yu Feng-Yi Zhang Ya-Tong Wang Hao Xu Hong-Lian Gao Lei Zhang Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years Guoji Yanke Zazhi preschool children axial length axial length/corneal radius of curvature ratio(al/cr) hyperopia reserve refractive errors myopia spherical equivalent |
| title | Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| title_full | Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| title_fullStr | Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| title_full_unstemmed | Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| title_short | Analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| title_sort | analysis of refractive parameters and theirs correlation with spherical equivalent in preschool children aged 3 to 6 years |
| topic | preschool children axial length axial length/corneal radius of curvature ratio(al/cr) hyperopia reserve refractive errors myopia spherical equivalent |
| url | http://ies.ijo.cn/cn_publish/2023/7/202307025.pdf |
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