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Is critical flicker-fusion frequency a valid measure of visual fatigue? A post-hoc analysis of a double-masked randomised controlled trial.

Sumeer SinghLaura Elizabeth DownieAndrew J Anderson
Published in: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) (2022)
We find that CFF is not a useful surrogate for symptoms of visual fatigue, given its low correlation with scores on a visual fatigue symptom questionnaire.
Keyphrases
  • sleep quality
  • study protocol
  • clinical trial
  • physical activity