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.
Mean 1-year change in axial length during year 1 (randomly assigned to PALs or SVLs) and during year 2 (all wore SVLs). Change in axial length is adjusted for baseline age, sex, ethnicity, baseline axial length, baseline steep keratometry, and baseline outdoor activity. Error bars represent SE.
