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The baseline value of the low-frequency component (LFC) is lowest during the near work test. The LFC of myopia group gradually increases with time, reaching a peak at 30 min before a gradual decline. The low-frequency component of myopic individuals was significantly different between the baseline and the periods of sustained near work of 10, 20, 30, and 40 min, as revealed by one-way repeated measures ANOVA (p < 0.05).
