To make slit lamp digitalized, a beam splitter or adapter is put on the slit lamp with a camera adapter, then a DSRL camera can be attached. 

This beam splitter is for Zeiss mount slit lamp, for
66 Vision
Kangjie
Mediworks slit lamps, and camera can be Canon EOS and Nikon DSRL. 

We offer beam splitters for BQ900, CSO (both single port and dual port), Zeiss 120, Topcon old slit lamps.