Table 2.
Outcomes | Interventions studied | |||
---|---|---|---|---|
Undercorrected lenses: 2 studies | Bifocal lenses: 6 studies | Progressive addition lenses: 5 studies | Novel lenses to minimize peripheral hyper-opic defocus: 1 study | |
Primary outcome: change in refractive error | Analysis 1.1 | Analysis 2.1; Analysis 2.2; Analysis 2.3 | Analysis 2.1; Analysis 2.2; Analysis 2.3 | Analysis 3.1 |
Secondary outcome: change in axial length | Analysis 1.2 | Analysis 2.4; Analysis 2.5; Analysis 2.6 | Analysis 2.4; Analysis 2.5; Analysis 2.6 | Analysis 3.2 |
Secondary outcome: change in corneal radius of curvature | Not measured by Adler 2006 and reported as non-significant by Chung 2002 | Not reported | Analysis 2.7 | Not reported |
Adverse effects | Two participants who were under-corrected complained of blurred vision (Adler 2006) | None reported | None reported | Participants reported blurred side vision, visual distortion, dizziness, headaches and falls (Sankaridurg 2010) |
Compared with fully-corrected single vision lenses.