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 showing the change in the tear meniscus curvature, after instillation of a single drop of Celluvisc (1% carboxymethylcellulose sodium, Allergan). Ordinate: Stripe width measured directly from the TV monitor using a multistripe target. The width of three black and white cycles is shown. Abscissa: Time in minutes. Average width (mm) (SD) (error bars are hidden by the symbols at 3, 10, and 12 minutes).
