I don't have specific advice for working with a child how is blind, but I have worked with several children with special needs. I wouldn't think you will need a special permit, you already have a daycare set up, that should be sufficient. What you will need to change and adapt to- will greatly depend on the age and particular needs of this child. Is there support at home from an agency, like Andrew Fleck or the Children's Treatment Centre? (since you are in Ottawa) If so, the parents should have contacts with these agencies that may be able to consult with you. I worked at a couple of daycare centres in Ottawa as a "program assistant" and the money to pay for my position came from Andrew Fleck, not the daycare. They would also send a support agent to the daycare to observe and consult with me and the other staff regarding the child. I don't know, but they might have some supports like that for home daycare too. If its a child they are already following. You would have to ask.