Den Tonkelaar I, Van Leersum G K, Henkes H E
F.C. Donders Institute of Ophthalmology Utrecht, The Netherlands.
Doc Ophthalmol. 1994;86(2):167-71. doi: 10.1007/BF01203561.
In the years 1881-1890 the Utrecht instrumentmaker D.B. Kagenaar, laboratory attendant of Donders and Snellen, played an important role in the introduction on the German market of the ophthalmometer developed by Javal and Schiøtz.
在1881年至1890年间，乌得勒支的仪器制造商D.B. 卡根纳尔（Donders和Snellen的实验室助手）在将Javal和Schiøtz开发的眼压计引入德国市场方面发挥了重要作用。
