Comparison 5. Progressive computer glasses (range N/C+/F) 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		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
2 Asthenopia (change from baseline to 12 months) (corr 0)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
3 Asthenopia (change from baseline to 12 months) (corr 0.9)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
4 Asthenopia (12 months)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
5 Headache (change from baseline to12 months) (corr 0.7)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
6 Headache (change from baseline to12 months) (corr 0)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
7 Headache (change from baseline to12 months) (corr 0.9)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
8 Headache (12 months)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
9 Compliance (duration of use) (12 months)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected