My partner's mother is going through this as well. She gets injections directly into her eyes every so often. They've not halted her progression completely, but

My partner's mother is going through this as well. She gets injections directly into her eyes every so often. They've not halted her progression completely, but before she was getting the treatment done, her doc told her she had ~2 years of vision left. That was nearly a decade ago and she's still busy crocheting stuffed animals for all the neighborhood's children.