Inspection of over the top content to facilitate offering non-OTT content or other content andor services as an alternative to the OTT content is contemplated. In order to create a hoisting device whose coupling reliably equalizes the alignment errors with a simple and space-saving construction, the invention proposes that the coupling segments be arranged on the drive cams and extend essentially between the drive flange and the cable drum. By securing the gel to the inner cylindrical wall, the thickness of the gel and corresponding cap is minimized along with the overall footprint of the device. The adaptor directs light from a second, external source to provide a level of illumination sufficient to obtain a fundus image.