@DontFixit
The problem with those who are born deaf or blind is that there is a critical age that surgery would need to be done. This is within the first few years after birth when the infant's brain is still capable of learning how to process sound and light. After that period of time is when surgery will generally fail.
To say that people born deaf were made that way by god is an excuse to do nothing. Some children are born with other birth defects that can be corrected with surgery; if this is available then it can help improve the child's life.