Comparison 4. Multifocal soft contact lenses vs single vision soft contact lenses.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
4.1 Change in refractive error from baseline	8		Mean Difference (IV, Random, 95% CI)	Subtotals only
4.1.1 At 1 year	8	1135	Mean Difference (IV, Random, 95% CI)	0.26 [0.17, 0.35]
4.1.2 At 2 years	5	843	Mean Difference (IV, Random, 95% CI)	0.30 [0.19, 0.41]
4.1.3 At 3 years	2	395	Mean Difference (IV, Random, 95% CI)	0.47 [0.13, 0.82]
4.2 Change in axial length from baseline	8		Mean Difference (IV, Random, 95% CI)	Subtotals only
4.2.1 At 1 year	8	1143	Mean Difference (IV, Random, 95% CI)	‐0.11 [‐0.13, ‐0.09]
4.2.2 At 2 years	5	843	Mean Difference (IV, Random, 95% CI)	‐0.15 [‐0.19, ‐0.12]
4.2.3 At 3 years	2	394	Mean Difference (IV, Random, 95% CI)	‐0.22 [‐0.34, ‐0.10]
4.3 Change in refractive error following cessation of treatment (1 year)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected
4.4 Change in axial length following cessation of treatment (1 year)	1		Mean Difference (IV, Fixed, 95% CI)	Totals not selected