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.
Semiquantitative assessment of surface staining.
The van Bijsterveld Index divides the ocular surface into three regions: cornea, nasal conjunctiva, and temporal conjunctiva. Each zone is scored for severity on a scale of 0 to 3. The sum of the three zone scores gives the overall score. Values >3.5 are regarded as pathological (1)
