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.
Image obtained with the microscope. The lipid layer is seen in the “image spot” on the left. The alignment spot on the upper right is used to align the cornea at normal incidence to the axis of the microscope objective. The monitor spot, at lower right, is used for monitoring the intensity of the stroboscopic flash. See text for details. (xx add subject details to all images?) Normal tear film, 57 year old, white female.
