Correlation between refractive status and ocular biological parameters among students of grade three in teenagers aviation schools of Air Force
Journal Title: Journal of Air Force Medical University - Year 2023, Vol 44, Issue 7
Abstract
Objective To analyze the correlation between refractive status and ocular biological parameters among students of grade three in teenagers aviation schools of Air Force, and to explore the key monitoring indicators for myopia prevention and control of students in teenagers aviation schools of Air Force. Methods A total of 687 students of grade three from 16 teenagers aviation schools of Air Force in 15 cities were recruited, all male, aged 17 - 19 years old. The spherical equivalent refraction ( SER) of the students was obtained by retinoscopy after cycloplegia. Ocular biological parameters were detected by an optical coherence biometry instrument, including axial length (AL), flat and steep corneal curvature (K1, K2), anterior chamber depth (ACD), lens thickness (LT), central corneal thickness (CCT), pupil size (PS), and white-to-white ( WTW). Vitreous chamber depth ( VCD) was calculated ( VCD = AL - ACD - CCT - LT). Students were divided into myopic group (≤ - 0. 50 D group) and non-myopic group according to whether they were myopic or not. The non-myopic group was divided into four subgroups according to the SER, namely > - 0. 50 ~ 0 D group, > 0 ~ + 0. 50 D group, > + 0. 50 ~ + 1. 00 D group and > + 1. 00 D group. Independent sample t-test was used to compare SER and ocular biological parameters between myopic group and non-myopic group. One-way ANOVA and Bonferroni correction were used to compare SER and ocular biological parameters in students of different refractive subgroups. Pearson correlation analysis was used to analyze the correlation between SER and ocular biological parameters, and multivariate regression analysis was used to obtain the regression equation between SER and various ocular biological parameters. Results ①The SER of myopic students was significantly lower than that of non-myopic students ( P < 0. 01), the AL, ACD and VCD of myopic students were significantly higher than those of non-myopic students, and LT of myopic students was significantly lower than that of non-myopic students (P < 0. 01). ②The AL and VCD were significantly increased with the decrease of SER in ≤ - 0. 50 D group, > - 0. 50 ~ 0 D group and > 0 ~ + 0. 50 D group (P < 0. 01, P < 0. 05); the ACD in students of ≤ - 0. 50 D group was significantly deeper than that in > 0 ~ + 0. 50 D group, > + 0. 50 ~ + 1. 00 D group and > + 1. 00 D group (P <0. 01), and that in > -0. 50 ~0 D group was significantly deeper than that in > +0. 50 ~ +1. 00 D and > +1. 00 D group (P < 0. 01); the LT in students of ≤ - 0. 50 D group was significantly thinner than that in other subgroups (P < 0. 01), and there was no significant difference among the three groups of > - 0. 50 ~ 0 D, > 0 ~ + 0. 50 D and > + 0. 50 ~ + 1. 00 D (P > 0. 05); the LT in students of > + 1. 00 D group was significantly thicker than that in other subgroups ( P < 0. 01, P < 0. 05). ③There was a low correlation between SER and AL, LT, and VCD in myopia group, and a low correlation between SER and AL, ACD, VCD, LT, and PS in non-myopia group. There was no significant correlation between SER and K1, K2, CCT, and WTW. Conclusion Ocular biological parameters such as AL, ACD, LT, and VCD of students in teenagers aviation schools of Air Force are closely related to SER. It is necessary to establish a comprehensive refractive development file to find the dynamic changes of ocular biological parameters and explore potential predictors of myopia.
Authors and Affiliations
QI Linsong, YAO Lu, WANG Xuefeng, LIU Yong, ZHAO Jin, WU Tengyun, ZHAO Chen, YANG Qinghong,ZOU Zhikang
Keywords
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