Comparison 1. All progressive computer glasses vs Monofocal computer glasses.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Asthenopia (change from baseline to 12 months) (corr 0.7)	1	186	Mean Difference (IV, Fixed, 95% CI)	0.23 [‐4.97, 5.43]
2 Asthenopia (change from baseline to 12 months) (corr 0)	1	186	Mean Difference (IV, Fixed, 95% CI)	0.23 [‐9.23, 9.69]
3 Asthenopia (change from baseline to 12 months) (corr 0.9)	1	186	Mean Difference (IV, Fixed, 95% CI)	0.10 [‐6.09, 6.30]
4 Asthenopia (12 months)	1	147	Mean Difference (IV, Fixed, 95% CI)	11.57 [3.59, 19.55]
5 Headache (change from baseline to12 months) (corr 0.7)	1	128	Mean Difference (IV, Fixed, 95% CI)	11.02 [5.17, 16.87]
6 Headache (change from baseline to12 months) (corr 0)	1	186	Mean Difference (IV, Fixed, 95% CI)	10.67 [3.15, 18.20]
7 Headache (change from baseline to12 months) (corr 0.9)	1	186	Mean Difference (IV, Fixed, 95% CI)	10.51 [7.64, 13.38]
8 Headache (12 months)	1	128	Mean Difference (IV, Fixed, 95% CI)	4.16 [‐2.38, 10.71]
9 Compliance (duration of use) (12 months)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected