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digital eye strain

Break from from computer monitor focus & fixate on an object at least 20 feet (6 m) away for at least 20 seconds every 20 minutes.

General

eye disease (ophthalmopathy)

References

  1. Johnson S, Rosenfield M. 20-20-20 Rule: Are These Numbers Justified? Optometry & Vision Science. 2022. Dec 6. https://journals.lww.com/optvissci/Abstract/9900/20_20_20_Rule__Are_These_Numbers_Justified_.62.aspx