asking for an image erection system for a surg. microscope

hello:
i am an ophthalmologist and i am in need of an image erecting system for my surgical microscope so that i can use contact lenses with wide field without the expensive microscope inverter. i know that there is something like this with porro prisms but how to apply (where to put and which porro prism....). i will appreciate any help. thank you

Hi

Sorry, we do not carry that accessory. Contact the manufacturer of your microscope.