I know it won’t be the same as the real thing, but it has its own benefits as well.
There’s the XReal Air 1 & 2, Rokids, Viture, and others. These go on sale regularly now. Might be even more deals as Black Friday/Cyber Monday approaches.
On Amazon you can currently get the Xreal Air 1 for $271 ($379 - $108 coupon). 120Hz 1080p OLED. If you search “xreal” in r/SteamDeck you will find mostly positive reception. But, do your own research and decide for yourself.
You can get prescription inserts (but they’re pricey). The Rokid Max has built-in diopter adjustment.
These are basically standard USB-C monitors in a glasses form factor, so you can plug them into anything: phones, laptops, etc. So you might find other uses beyond playing on the Deck.
I’ll be honest, I have a pair of XReals, but I’m usually too lazy to put them on and plug them into the Deck. I’ve mainly used it to watch videos from my phone while doing misc. outdoor work.
Sharing this because apparently a lot of people still don’t know about these…