How to Prevent Screen Fatigue and Brain Lag During 3-Hour Digital Exams
Continuous laptop screen exposure during 3-hour tests reduces blink rate from 18 to 4 times per minute, drying the cornea and triggering sympathetic stress. Using the 20-20-20 rule, adjusting screen brightness to match room ambient lux, and resetting peripheral vision maintains cognitive processing speed.
Taking a 3-hour test on a screen causes neural visual fatigue. Use the 20-20-20 ocular relaxation rule and adjust ambient luminescence to protect working memory.
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