Fernando Alonso sustained a fracture of his upper jaw in his cycling accident on Thursday, his Alpine team say.
The 39-year-old two-time world champion had a “successful corrective operation” and will remain in hospital for observation for 48 hours.
The team added: “The medical team are satisfied with his progress. After a few days of complete rest, he will be able to progressively resume training.
“We expect him to be fully operational to [prepare] for the season.”Pre-season testing is to be held in Bahrain from 12-14 March, before the first race at the same track on 26-28 March.