Abstract: The invention is a system comprising an adaptor (10) which comprises an inner chamber (111) into which electronic recording devices that can record images such as smart phones, pocket computer, tablet computer can be placed and a space (112) provided on the location that comes across with the camera of the electronic recording device, characterized in that, said single adaptor (10) comprises a mounting part (113) located on the front side of the adaptor (10) and focusing optic units connected to said mounting part (113) during application and have a lens assembly chosen in accordance with the body part to be visualized, for being used in more than one application such as biomicroscopy, indirect ophthalmoscopy, otoscopy, dermatoscopy and colposcopy.