Table 3.
Comparison of Outcomes in Group B Before and After Screen-Time Reduction
| Parameters | Before (Mean ± SD) Median (Range) |
After (Mean ± SD) Median (Range) |
Mean Difference (After-Before) (95% Confidence of Interval) | P value |
|---|---|---|---|---|
| Daily screen-hours (hours): | 5.48±1.92 | 1±0 | −4.48 (−5.27:-3.69) | <0.0001 |
| 5 (3:9) | 1 (1:1) | |||
| Visual outcomes (logMAR): | ||||
| UDVA | 0.36±0.25 | 0.23±0.22 | −0.12 (−0.15:-0.10) | <0.0001 |
| 0.3 (0:0.9) | 0.2 (−0.2:0.7) | |||
| CDVA | 0.02±0.08 | −0.04±0.06 | −0.06 (−0.10:-0.03) | 0.002 |
| 0 (−0.1:0.2) | 0 (−0.2:0) | |||
|
mfERG examination outcomes: I- Amplitudes P1: (normal range nV/deg2) | ||||
| Ring 1 | 54.00±10.86 | 70.50±12.30 | 16.50 (12.38:20.61) | <0.0001 |
| R1 (66.6–130.8) | 49.75 (41.72:89.14) | 67.37 (45.43:100.1) | ||
| Ring 2 | 30.99±5.02 | 37.92±7.16 | 6.93 (4.69:9.17) | <0.0001 |
| R2 (30.9–77.8) | 31.8 (20.15:38.69) | 36.45 (27.36:52.96) | ||
| Ring 3 | 20.22±3.45 | 24.18±4.46 | 3.96 (1.94:5.98) | 0.0005 |
| R3 (21.7–59) | 20.32 (13.48:28.63) | 23.69 (16.33:33.4) | ||
| Ring 4 | 12.11±2.60 | 12.28±2.36 | 0.17 (−0.49:0.83) | 0.59 |
| R4 (12.9–37.1) | 11.85 (5.1:17.83) | 12.22 (8.34:19.03) | ||
| Ring 5 | 8.63±1.92 | 9.21±2.05 | 0.57 (0.11:1.04) | 0.02 |
| R5 (10–28.2) | 8.18 (4.32:12.62) | 8.68 (6.7:14.95) | ||
|
II- Amplitudes P1: (normal range nV/deg2) | ||||
| Quadrant 1 | 10.10±2.26 | 12.46±3.17 | 2.36 (1.43:3.30) | <0.0001 |
| Q1 (15.8–42.74) | 10.1 (5.05:14.16) | 11.89 (5.67:21.79) | ||
| Quadrant 2 | 13.31±2.70 | 13.72±2.79 | 0.41 (−0.33:1.16) | 0.27 |
| Q2 (15.98–42.75) | 13.21 (6.44:20.18) | 13.67 (8.56:19.41) | ||
| Quadrant 3 | 14.40±3.17 | 15.69±3.57 | 1.29 (0.01:2.57) | 0.04 |
| Q3 (15.18–42.05) | 13.85 (4.89:19.43) | 15.34 (8.45:22.41) | ||
| Quadrant 4 | 9.79±2.50 | 10.16±2.52 | 0.37 (−0.07:0.81) | 0.10 |
| Q4 (13.87–39.61) | 10.59 (3.26:13.45) | 9.87 (6.36:14.62) | ||
Abbreviations: UDVA, uncorrected visual acuity; CDVA, uncorrected visual acuity; logMAR, logarithm of minimal angle of resolution; Amplitudes P1, amplitude density of the first foveal peak; deg, degree; nV, nanovolts; R1 to R5, Ring 1 to Ring 5; Q1 to Q4, Quadrant 1 to Quadrant 4; SD, standard deviation.