Our situation is a bit different because our labrador went blind gradually and it was not such a shock to her. It was still difficult for us to hear the stark fact from the specialist that nothing could be done. Grieve briefly for the dog that you thought you had and then move on with the special dog you now have.
The obvious thing is not to move anything in the house or garden for a while. If we do change anything now we take her to it and 'show' her.
She seems to have her major problem with going down. She won't jump out of the car without support but will happily jump in; won't come downstairs on her own; is reluctant to walk down a steep hill; needs to be carried down strange stairs eg. down to a beach.
Having said that she still pays very happily. We have rubber balls with bells inside, empty bottles with stones in and so on. She hears where they land and sniffs them out.
She is a well loved member of our dog walking group and all our friends are very supportive. She needs to be held onto if a strange dog wants to sniff 'hello' as it spooks her.
Yes, occasionally she does walk into things but so far not at any great speed and it doesn't distress her.
We have recently taught her to respond to 'Steady'. She will slow down and knows we are warning her about a hazard ahead.
Hope some of this helps.