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.
This figure shows the raw camera image. In this image multiple interference patterns are apparent with different spacing, sizes and orientations. The period of these fringes is extracted by applying the spatial autocorrelation analysis and used in calculating the thickness of the tear film.
