Gutted that no-one has answered this for you as I've been struggling with the same question and found this thread by search. I'm currently only using glasses for reading but am also getting slightly short-sighted and I'm struggling with both near and far focus with my bins (whether or not I wear my reading glasses) but can't get my head round this. Where are your eyes actually focusing if you are looking through binoculars? Surely there's a science nerd on here somewhere who can talk us through this?When a person has reading glasses and driving glasses, which ones are to be used with binoculars?
Why?
So, if you're using bifocals/varifocals are you always looking through the distance part of the lens when looking through bins or are you varying your view with the distance as you would without bins?It's logical to wear distance glasses and presumably then the binos do not need diopter correction (assuming distance means correction for 20/20 both eyes), or very little tweaking.
But what's nice about bifocals or varifocals is that I can then also read a guidebook, or see adjustments on camera, or use phone. No different than any other outdoor activity. If I wore 'reading' glasses while birding, I'd trip over my feet when attempting to walk etc. And at least for me, the option of removing glasses to view etc. is too complicated - tangle with spectacle retainer, time lost doing it, etc.
I have pondered this question and at first worried about it (I used to use binos w/out glasses but when I got to the point where I needed them to read, started wearing them). Even tho the 'sweet spot' is mid-lens, I have not found that I have to worry much about it - it's just naturally where my eye is. I.e. when binos are brought up to eyes, the eye is then kept centered on eyepiece - otherwise you'd get blackouts etc.So, if you're using bifocals/varifocals are you always looking through the distance part of the lens when looking through bins or are you varying your view with the distance as you would without bins?
In the best case, the eyeglasses are as narrow as possible, i.e. no thick edges, you should be able to slide your glasses towards the bridge of your nose as far as possible so that your eyes aren't far away.Can anyone suggest the best shape of glasses they’ve found for using with bins? Big lenses/small, round/not, plastic/metal frames?
Thank you.
Agree. And your optician can set the bifocal line a bit lower than normal. Not as comfortable for reading, but less 'fuzzy area' in bino view (particularly when using some of the newer 'alpha' glass with huge eye-box.One should consider a bifocal (segmented) option to retain near vision utility while eliminating the progressive corridor possibility of intrusion into your viewing field and focus.
My answer is: the one physically better adapted to the binocularWhen a person has reading glasses and driving glasses, which ones are to be used with binoculars?
Why?