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.
Three‐category age distribution in the six diagnosis groups. The distribution of the three‐category age (younger than 40 years, 40 to 60 years and older or equal than 60 years) shows a higher proportion of over 60‐year‐old patients in the pure anterior blepharitis group and a higher proportion of younger than 40‐year‐old patients in the pure meibomian gland dysfunction group.
