US FAA Aeronautical Information Manual (AIM)
5-4-23:
e. A visual approach is not an IAP and therefore
has no missed approach segment. If a go around is necessary for any reason, aircraft operating at controlled airports will be issued an appropriate advisory/clearance/instruction by the tower. At uncontrolled airports, aircraft are expected to remain clear of clouds and complete a landing as soon as possible. If a landing cannot be accomplished, the aircraft is expected to remain clear of clouds and contact ATC as soon as possible for further clearance.
Separation from other IFR aircraft will be maintained under these circumstances.