Avoid displaying fixed patterns on the monitor for long periods of time to avoid image persistence (after-image effects).

Get regular eye checkups.

Ergonomics

To realize the maximum ergonomics benefits, we recommend the following:

Use the preset Size and Position controls with standard signals.

Use the preset Colour Setting.

Use non-interlaced signals with a vertical refresh rate between 60-75 Hz.

Do not use primary colour blue on a dark background, as it is difficult to see and may produce eye fatigue to insufficient contrast.

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NEC LCD1501 user manual Ergonomics, English-10