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Digital eye strain affects up to 90% of people using screens 2+ hours daily. Symptoms include dry eyes, blurred vision, and headaches.

ステップバイステップガイド

1Blinking drops from approx 15/min normally to approx 5/min during screen use
2Reduced blinking leads to a reduced tear film and dry, irritated eyes
320-20-20 rule: every 20 minutes, look 20 feet away for 20 seconds

解いた例

入力

8hrs screen, 3 breaks, 60cm distance, moderate brightness

結果

Moderate strain risk - increasing break frequency to every 30 min would help most

よくある質問

What is Eye Strain Score?

Digital eye strain affects up to 90% of people using screens 2+ hours daily. Symptoms include dry eyes, blurred vision, and headaches

How accurate is the Eye Strain Score calculator?

The calculator uses the standard published formula for eye strain score. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Eye Strain Score calculator use?

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Eye Strain Score calculator use?

The calculator applies the standard formula for this type of calculation. See the 'How It Works' steps above for the detailed formula breakdown.

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