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.
Example of a true blink (TB; i.e., a blink that was recorded by the software and occurred in the visual inspection [VI] at the same time). This example is from the Pupil Core device. The ellipse around the pupil disappears when the pupil is more than 50% covered, and this event is counted as an eye blink.
