Comparison 3. Progressive computer glasses (range N/C+/IM) vs. General purpose progressive glasses.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Asthenopia	2		Std. Mean Difference (Fixed, 95% CI)	Subtotals only
1.1 Short term follow‐up	2		Std. Mean Difference (Fixed, 95% CI)	‐0.49 [‐0.75, ‐0.23]
1.2 Medium term follow‐up	1		Std. Mean Difference (Fixed, 95% CI)	‐0.64 [‐1.40, 0.12]
2 Headache (1 week)	1		Mean Difference (Fixed, 95% CI)	Totals not selected
3 Dizziness (1 week)	1		Mean Difference (Fixed, 95% CI)	Totals not selected