A Study on the Design of Vision Protection Products Based on Children's Visual Fatigue under Online Learning Scenarios.

The paired t-test results showed that the subjective fatigue evaluation after the test was significantly higher than that before the test, and there were extremely significant differences in the subjective fatigue scores of the subjects in terms of eye symptoms, headache symptoms, and body pain ( p < 0.01), as shown in Table 1 .

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The BF of the patients showed an increasing trend with the prolongation of time and showed a decreasing trend after 25 min, and the blink frequency was the largest at 25 min (M ± SD = 10.680 ± 3.074).

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