Recently purchased a pair of the WidmoVR prescription lens inserts and it's like a brand new system. I thought that since I was near-sighted that it wouldn't really affect me much, but the different is incredibly significant. Took a shot in the dark and these things are AMAZING. If you need...
https://www.ebay.com/itm/332655010154?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1558.l2649
This is the same thing that is listed in my FS thread.
https://hardforum.com/threads/canon-28mm-f-2-8-is-lexar-128gb-cf-card-lexar-usb-3-cf-reader-camera-gear.1959956/
If eBay makes you feel more secure...