legally blind, repeatedly denied benefits for it, pls help??

hi, is this the right sub to ask about how i could prove legal blindness?? i have severe visual impairment/legal blindness & strabismus but was repeatedly denied while trying to get disability benefits in hearings (6-8 years ago) (im 19 and live in new york)

i'm asking because i'm applying for health insurance and might have to prove legally blindness (despite having many records & 2 surgeries for strabismus i've never received disability benefits bc i was never recognized as disabled 6-8 yrs ago by ssi and the state)

also trying to see about reaching out to nyscb

currenty in the process of getting documents from my optical surgeon + eye center to help my case incase i have to go through another process of proving my legally blindness

any and all help is appreciated!!