Hmmm, is this the whole question?
Answer:
People think his blindness is caused by age; neither he nor his daughter wiĺl tell how it happened
You should let your emotions out. Don't hold them in that only makes it worse... Losing someone you love is very hard and i'm glad you're still here... You should try to vent to someone you trust so you can let everything out. I hope you're okay and i hope you know you're loved.