rwinney, Came across this information and didn't know if it's old news to you. Flavonoids represent an enormous opportunity for solutions to a variety of health concerns. This link is about quercetin's benefits for the eye. Maybe it holds some answers for you. Quercetin has a low absorption rate so look for high absorption products.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5685256/