993.127.1: Ophthalmoscope, 1900-1927

Additional Images

993.127.1: Ophthalmoscope.
Image No. 2294 ; Photographer: Helen Kingsley

Object Description

Self-luminous ophthalmoscope Simplex No.110 by instrument maker Henry DeZeng in blue velvet lined case. An encased revolving disc contains 19 lenses, with a lever on the mirror side that fixes its position, the mirror is tilted. 'DeZeng' is stamped into handle, 'MADE IN U.S.A.' and patent dates 'PAT 12.21.15, 7.18.22' are stamped into the mirror side of the ophthalmoscope and 'WELLSWORTH DEZENG' and 'Simplex No.110' are stamped into the other side. A cirular metal foil disc is attached to the lid lining with the makers details in relief. One lamp bulb is missing. Dimensions given are for closed case. Ophthalmoscope is not original to box and handle.

Object Classification

Accession Number: 993.127.1
Collection: Ophthalmology
Date: 1900-1927

Object Dimensions

  • Length: 21.5 cm
  • Height: 4.4 cm
  • Width: 6.3 cm

Object Parts

  • a) Lined case with front catch
  • b) Handle
  • c) Ophthalmoscope
  • d) Bulb

Object Materials

  • aluminium silvering,
  • coating,
  • copper alloy,
  • filament,
  • glass,
  • leatherette,
  • metal,
  • metal foil,
  • velvet,
  • wood

Acquisition Detail

  • Manufacturer: De Zeng, H. L.
  • Manufacturer of part c) : American Optical Company
  • Patent Country: U.S.Patent Date: 1915-12-21
  • Owner: Dr. John B. Ringwood
  • History of Use: Used by Dr. Barney Ringwood who in 1953 joined a general practice with Dr. Hugh Atwood in Williams Lake B.C. In 1968 Dr. Ringwood retired and died in 1986.