From: Assessment of eye fatigue caused by head-mounted displays using eye-tracking
Eye movement features | 1st measurement | 2nd measurement | 3rd measurement | 4th measurement |
---|---|---|---|---|
Number of fixation points | \(43.12\pm 7.97\) | \({ 39.50}\pm { 8.20}\) | \({ 35.62}\pm { 8.98}\) | \({ 30.19}\pm { 9.61}\) |
Total duration of fixation points (s) | \(16.97\pm 0.56\) | \(16.88\pm 0.87\) | \({ 16.72}\pm { 1.08}\) | \({ 16.05}\pm { 1.75}\) |
Mean duration of fixation points (s) | \(0.41\pm 0.12\) | \({ 0.46}\pm { 0.15}\) | \({ 0.53}\pm { 0.29}\) | \({ 0.67}\pm { 0.57}\) |
Variance of fixation durations (\(s^{2}\)) | \(0.08\pm 0.06\) | \({ 0.13}\pm { 0.09}\) | \({ 0.40}\pm { 0.31}\) | \({ 0.91}\pm { 0.63}\) |
Times of blinking | \(2.57\pm 2.44\) | \(4.65\pm 3.51\) | \({ 6.79}\pm { 4.50}\) | \({ 10.21}\pm { 6.18}\) |
Total duration of blinking (s) | \(0.49\pm 0.49\) | \(0.95\pm 0.77\) | \({ 1.48}\pm { 1.05}\) | \({ 2.55}\pm { 1.73}\) |
Mean duration of blinking (s) | \(0.16\pm 0.07\) | \(0.20\pm 0.03\) | \(0.21\pm 0.04\) | \(0.25\pm 0.07\) |
Variance of blink durations (\(s^{2}\)) | \(4.01\hbox {E-}04\pm 3.05\hbox {E-}04\) | \({ 1.13E-03}\pm { 1.06E-03}\) | \({ 2.71E-03}\pm { 2.16E-03}\) | \({ 1.06E-02}\pm { 0.87E-02}\) |
Length of scanpath (pixel) | \(6002.49\pm 3994.3\) | \({ 8387.62}\pm { 4824.81}\) | \({ 11109.34}\pm { 6576.00}\) | \({ 16063.95}\pm { 8713.61}\) |
Mean of saccade length (pixel) | \(137.11\pm 84.5\) | \({ 209.91}\pm { 110.03}\) | \({ 331.59}\pm { 255.29}\) | \({ 619.30}\pm { 500.48}\) |