Depth perception....

I don't think you need worry too much about "gathering evidence" - it will require a detailed eye exam and they can probably see more about the potential causes than you can tell them! Eye doctors see into your soul   and an eye exam can diagnose far more than you would expect. It isn't long now.

https://www.thevisiontherapycenter.com/discovering-vision-therapy/bid/53555/the-causes-of-double-vision

This should suggest the info you need to be aware of knowing: is the double vision vertical or side by side; is it permanent or only when you are tired, does distance make a difference - that sort of thing.

The fact you find depth perception a problem is to be expected I think. Are your eyes "dry"? - do you have copious thin tears at times? 

Hi lynda62707

I do understand where your coming from. Double vision is missalignment of the eyes as if you go crosseyed and see double. This is sometimes due to a weak eye muscle, something wrong with the cornea or cataract causing a problems..🤔. It's no good speculating lynda you need to have your eyes checked by an opti.....hope all goes well at your surgery consultation on Tuesday...keep us posted....good wishes that all is well..

My first stroke presented in the exact same way you're talking about. And I knew nothing about Strokes so I didn't do anything about it that day. I urge you to go to the emergency room so they can determine if it's a stroke. They have to do a CT to see if it's a stroke.

I used to get double vision when I had too much coffee at work years ago.  I still get it for an hour or two sometimes but don't know the cause.  I do have dry eye now.  I didn't then.