I had Medicare Parts A & B and Medicaid when I was on disability/making a lot less money years ago. It was great coverage, but sometimes I'd be limited on my options, because they would only pay for certain things. For example, I had to get a specific type of lens implant when I had cataract surgery if I didn't want to pay for it myself, or if I was in the hospital, it wouldn't cover a private room. Every insurance provider has quirks like that, though.

I have a platinum plus plan through BCBS now that's pretty great, with Guardian for vision (and dental), which is slightly less great. Most of my eye-related things aside from glasses are covered under BCBS though, so it's fine. BCBS has better LGBTQ+ health care coverage than Medicaid does in a lot of states, if that's a concern. Both cover ocular prosthetics.

Medicare/Medicaid was great when i was still on SSDI and single.

Which country are you in?