From candlelight to light bulb an evolutionary tale of the cystoscope.
Green
N A
NA
D020684:Cystoscopes; D003558:Cystoscopy / Q000266:history*; D049672:History, 19th Century; D049673:History, 20th Century; D007909:Lenses / Q000266:history; D008029:Lighting / Q000266:history*