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.
Analysis of physician’s lens position. The physician’s lens is mostly located in Area (d, 4), Area (e, 4) and Area (f, 4) when leaning forward to perform a task, and in Area (c, 5), Area (d, 5) and Area (e, 5) when standing upright to perform a task.
