An official website of the United States government
Here's how you know
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.
Frequency distribution of the difference between E-ETDRS and ATS-HOTV visual acuity for A. amblyopic and B. fellow eyes. Difference is calculated as logMAR acuity by E-ETDRS minus that by ATS-HOTV.