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.
The correlation between age and visual performance was medium for all optical conditions except NVf (strong correlation) and M6.4× (weak correlation)
| Condition | Spearman’s rank correlation |
|---|---|
| NV | −0.543 |
| NVf | −0.747 |
| G | −0.686 |
| K | −0.563 |
| M4× | −0.485 |
| M6.4× | −0.286 |
