Figure 3.
Forest plot of corrected distant visual acuity of all 6 studies (a) and after removing 2studies with larger heterogeneity and potential bias (b).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.