I found this article on how and what deer see.  I thought it might be helpful to the deer hunters here.

https://www.americanhunter.org/articles/2016/11/5/defeat-the-whitet...

I already knew that deer relied heavily on scent and sound for self defense but didn't realize how much they depended on their eyes.  I hadn't thought before about how they could run through woods and brush without poking their eyes out.  But it makes sense if they can see movement that well.

I know if you don't move and they don't scent you, deer will pretty much ignore you.  I once stood and watched 13 deer feeding in a field in front of me.  There were ten bucks and three does.  I was standing in the open, no cover around me. I didn't have camo on and had not used scent control.  I was not hunting.  I stood and watched those deer for 15 or 20 minutes.  I was standing next to the wire fence on the edge of the field.  Two of the deer came within 20 yards of me.  One of them even jumped onto the same side of the fence as me.  The one thing I didn't do was move.  I wonder if they just took me for a fence post?