%0 Journal Article %A J. K. A. Wertheim Salomonson %T A NEW PHOTOGRAPHIC AND A NEW DEMONSTRATION OPHTHALMOSCOPE %D 1921 %R 10.1136/bjo.5.4.163 %J British Journal of Ophthalmology %P 163-165 %V 5 %N 4 %U https://bjo.bmj.com/content/bjophthalmol/5/4/163.full.pdf