Desperately need to see an optometrist but can’t afford it

So I’m currently on maternity leave with no health benefits at the moment. For the past like 10 months I’ve been losing vision in my left eye. I already have glasses but it’s gotten so much worse that I’m desperate to get in to see the eye doctor. The only issue is I’m not making much $$ and I’m just making enough to cover bills so I do not have $$ to get them checked. I’m not sure what I can do. If only eye exams were free