Refraction at a spherical interface (2)

A curved interface intersects the optical axis at $(x=0,y=0)$. The interface has a radius $R$ centered at $C$. For $R>0$ the interface is convex and for $R<0$ the interface is concave. The index of refraction is $n_1$ to the left of the interface and $n_2$ to the right of the interface. Light rays leave an object $o$ on the left of the interface and are refracted at the interface.