Table 2.
Comparison Between the A and B Groups After Screen-Time Reduction
| Parameters | Group A (Mean ± SD) Median (Range) |
Group B (Mean ± SD) Median (Range) |
Mean Difference (Group B-Group A) (95% Confidence of Interval) | P value |
|---|---|---|---|---|
| Daily screen-hours (hours): | 1±0 | 1±0 | 0 | |
| 1 (1:1) | 1 (1:1) | |||
| Visual outcomes (logMAR): | ||||
| UDVA | 0.12±0.19 | 0.23±0.22 | 0.11 (−0.01:0.23) | 0.06 |
| 0.1 (−0.2:0.6) | 0.2 (−0.2:0.7) | |||
| CDVA | −0.08±0.09 | −0.04±0.06 | 0.04 (−0.006:0.08) | 0.09 |
| −0.1 (−0.3:0) | 0 (−0.2:0) | |||
|
mfERG second examination outcomes: I- Amplitudes P1: (normal range nV/deg2) | ||||
| Ring 1 | 88.14±15.46 | 70.50±12.30 | −17.64 (−25.59:-9.70) | <0.0001 |
| R1 (66.6–130.8) | 88.37 (63.12:138.75) | 67.37 (45.43:100.1) | ||
| Ring 2 | 38.97±5.89 | 37.92±7.16 | −1.05 (−4.78:2.68) | 0.57 |
| R2 (30.9–77.8) | 36.68 (31.78:57.86) | 36.45 (27.36:52.96) | ||
| Ring 3 | 22.98±3.04 | 24.18±4.46 | 1.19 (−0.98:3.36) | 0.25 |
| R3 (21.7–59) | 22.46 (16.68:30.28) | 23.69 (16.33:33.4) | ||
| Ring 4 | 13.78±2.29 | 12.28±2.36 | −1.50 (−2.82:-0.18) | 0.03 |
| R4 (12.9–37.1) | 13.33 (10.46:18.52) | 12.22 (8.34:19.03) | ||
| Ring 5 | 11.84±2.31 | 9.21±2.05 | −2.34 (−3.58:-1.10) | 0.0004 |
| R5 (10–28.2) | 10.88 (8.35:18.97) | 8.68 (6.7:14.95) | ||
|
II- Amplitudes P1: (normal range nV/deg2) | ||||
| Quadrant 1 | 13.00±2.25 | 12.46±3.17 | −0.54 (−2.10:1.01) | 0.49 |
| Q1 (15.8–42.74) | 12.57 (9.35:18.26) | 11.89 (5.67:21.79) | ||
| Quadrant 2 | 16.69±2.01 | 13.72±2.79 | −2.96 (−4.35:-1.59) | 0.0001 |
| Q2 (15.98–42.75) | 16.89 (12.46:20.46) | 13.67 (8.56:19.41) | ||
| Quadrant 3 | 16.66±3.17 | 15.69±3.57 | −0.97 (−2.89:0.95) | 0.31 |
| Q3 (15.18–42.05) | 15.56 (12.68:23.47) | 15.34 (8.45:22.41) | ||
| Quadrant 4 | 12.29±2.00 | 10.16±2.52 | −2.14 (−3.43:0.84) | 0.002 |
| Q4 (13.87–39.61) | 11.89 (9:15.86) | 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.