Shahid Ullah, the father of Maria, says that the family is "so happy" at the news and thanked friends and supporters world over who helped them.
Ullah, a poor merchant who owns a shop selling blankets in Rawalpindi, near the capital of Islamabad, has campaigned for nearly four years seeking treatment for Maria, who suffers from a genetic disorder known as Morquio Syndrome in which the vertebrae compress the spinal cord.
The embassy said today the visas were approved.