Lost navy blue hard-shell clamshell contact lens case near Richmond park after lunch.

I was at the park near Richmond just after lunch when I realized I lost my contact lens case. It's a small, hard-shell case that's navy blue and opens up like a clamshell. I must have dropped it while rearranging my bag or something. There were quite a few people around, so I'm hoping someone might have picked it up. It contains my daily disposable lenses, so it's quite important to me.