ArticleBMC public health2025
A concept reflecting relative visual acuity insufficiency among low and moderate myopia students in east of China: Yicheng Myopia Study.
Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Age Modifies the Comparative Effectiveness of DIMS Versus HAL Spectacle Lenses for Myopia Control: A Real-World Study.Translational vision science & technology · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMyopia has shown a sharp upward trend worldwide and has become a global public health concern. However, there were insufficient correction rates all over the world. This study aimed to investigate the prevalence of myopia and spectacle-wearing rate in primary and high school students in Yicheng, as well as analyze the risk factors of myopia onset and development. Additionally, we introduced a novel concept to reflect Relative Visual Acuity Insufficiency (RVAI) in myopia students.
methodsA school-based cross-sectional study was conducted in 2022, involving 37,908 students in Yicheng. The refractive error was measured using an autorefractor without cycloplegia and recorded as a spherical equivalent refraction (SER). Visual acuity was recorded as uncorrected visual acuity (UCVA). Only worse SER and UCVA values between the two eyes were analyzed. Myopia was defined as SER < -0.50 D and UCVA > 0.2 using the logarithm of the minimum angle of resolution. Multivariance logistic regression identified risk factors for myopia. Correction rate (CR) referred to the proportion of myopic students wearing spectacles. Required Visual Acuity (RVA) and Actual Visual Acuity (AVA) were proposed to calculate the ratio of RVA to AVA (RAR) to assess RVAI.
resultsA total of 37,908 primary and high school students were included (16,826 girls, mean age of 11.68 ± 3.04 years). The overall myopia prevalence was 41.6%, with 5.4% classified as high myopia. Older age, girls, and schooling in urban areas were risk factors for myopia. CR increased with grade (13.0% in Grade 1 to 85.8% in Grade 11) but remained low overall (48.2% uncorrected). RAR analysis revealed RVAI of myopia students in Yicheng.
conclusionsThe myopia and high myopia prevalence was high among the students in Yicheng. The proportion of students with uncorrected myopia was high. Further research should be conducted to identify specific socioeconomic factors that contribute to myopia and to lower the incidence of myopia by lowering the exposure to these factors. The RAR metric highlights unmet visual needs even in low and moderate myopia, offering a novel tool for prioritizing interventions.
trial registrationNot applicable.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.