[Retracted] Visual Fatigue Estimation by Eye Tracker with Regression Analysis

Table 1

Questionnaires and CFF results before and after fatigue task. ; ; .

Item	Content		Pretest	Posttest	value
			Mean (SD)	Mean (SD)
Subjective visual fatigue assessment	Q1	I have difficulties in seeing	2.64 (2.15)	2.85 (2.14)	0.466
	Q2	I have a strange feeling around the eyes	1.82 (1.65)	3.33 (2.56)
	Q3	My eyes feel tired	3.61 (2.26)	5.85 (2.86)
	Q4	I feel numb	2.06 (1.71)	4.12 (2.99)
	Q5	I have a headache	1.73 (1.31)	3.24 (2.32)
	Q6	I feel dizzy looking at the screen	2.85 (2.21)	4.03 (2.49)
	Total		14.7 (9.27)	23.42 (12.24)
Objective visual fatigue assessment	Critical fusion frequency (CFF)		37.77 (12.92)	39.5 (11.84)	0.195