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

Sumeer Singh Laura Elizabeth Downie Andrew 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