Have you ever heard of helen keller?
There is quite a bit if you google her name.
I know this isn't where you will be thinking right now but maybe remember this for the future when things aren't so intense.
Beauty comes from within not from the outside, so i'm sure he will know the truth of his mothers beauty for himself.
Support is key, yes it'll be hard but the more you understand his degree of blindeness the easier you (and he) will find it to cope, simple things such as not moving the furniture around
yes, you're very true blindeness isn't the darkness it once was. My partner is technically blind without lenses/glasses, in his case due to extreme short-sighted ness. Do you know yet what kind of blindeness your son has been diagnosed with? Is it focal control blindeness or is it damage to the optical nerve? Fault with the retina?