the epidemic of rop in the 1950s was strictly due to high oxygen levels administered to premature infants since little was known about its' effects on the eyes.
i have congenital cataracts, but do not know how much of a part they played in my total blindness. my current opthalmologist (whom i've been seeing for the past 4 years) says that it's possible my cataracts didn't blind me, but the fact that they existed didn't help matters either. instead, they created an opaque film over my eyes. she feels that what actually played a larger part in blinding me was rop due to my retinas being fully detached.
I see. So your blindness was mainly due to ROP but the cateracts complicated things? Did you get them removed?
I had a friend with cateracts. He was born blind with rubella damage. When he was 3 he had cateracts removed and he had fairly good sight after that. He could read normal print and understand sign language visually.