A new 3D printable smartphone based indirect fundus imaging adaptor.  This system is 100% printed with no additional fastener or hardware required. Simply add a 20D lens. Full phone casing for maximum stability.  Compatible with multiple popular smartphone models. 

Print the following 4 files: centralbeam.stl, lenscover.stl, screwknob.stl and SELECT ONE phone adaptor file corresponding to the smartphone on hand. 

Consult local regulations before use on live subjects. By using this design you agree to be responsible for any risk it may pose.