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.
OSDI: Ocular Surface Disease Index
| Parameter | Number of Items | Minimum - Maximum | Cronbach's Alpha | Median (IQR) |
| Eye symptoms | 5 | 0-20 | 0.805 | 6.0 (2.8-9.0) |
| Vision-related function | 4 | 0-16 | 0.862 | 4.0 (0.0-8.0) |
| Environmental triggers | 3 | 0-12 | 0.814 | 3.0 (0.0-6.0) |
| Raw OSDI | 12 | 0-48 | 0.907 | 14.0 (6.0-21.3) |
| Percent OSDI | 12 | 0-100 | 0.907 | 29.2 (12.5-44.3) |
