Visual Approach:
There are no requirements to ceiling and no requirement to be able to maintain VMC.
The pilots should be able to find the airport by navigating with reference to the ground.
Pilot responsible for seperation to the ground, ATC responsible for seperation to other traffic.
Min. visibility for commencement of Visual Approach 800 m.
VMC Approach:
WX above VMC minima. Because pilot responsible for seperation to traffic aswell as terrain.