I’ve been seeing an ad on tv recently about glasses you can manually adjust to suit your needs, whether for distance or for close-up. When it pops up next time, I’ll give you more details. Looks like something you could use and are inexpensive (and you can drop ‘em without damaging ‘em).
Here, just caught the ad on tv, you can take a look at their website. The glasses are $19.99.
https://www.buydialvision.com/?uid=E170A6C825F9F2482E4324E9F9447AA7
This is a critical review of it:
http://www.brightreviews.com/dial-vision-reviews