2009.19.1: Maddox Wing Test Instrument, 20th Cent.

Additional Images

2009.19.1: Maddox Wing Test Instrument.
Image No. 3432 ; Photographer: Helen Kingsley

Object Description

Hand held Maddox Wing Test instrument used to test for imbalances in binocular vision, for example heterophoria [tendency to squint] which is measured on the red vertical scale. Esophoria and exophoria are measured by the white horizontal scale. Cyclophoria may be assessed by moving the red arrow pointer parallel to the horizontal scale. The visual field is divided into two sections, allowing the right eye to see only the white and red arrows, whilst the left eye sees only the horizontal and vertical rows of figures. 'INST. No. 1370', 'MADDOX WING TEST' and 'ENGLAND' printed in white on the chart. Folding handle is accessed from beneath instrument.

Object Classification

Accession Number: 2009.19.1
Collection: Ophthalmology
Date: 20th Cent.

Object Dimensions

  • Height: 28 cm
  • Depth: 29 cm

Object Parts

Object Materials

  • copper alloy,
  • metal,
  • paint

Acquisition Detail

  • Owner: Dr. John R. Kellet M.B.E.
  • History of Use: Dr John Robert Kellet [1913-2008] emigrated to B.C. in 1959 where he worked for the Federal Indian Health Service. He retired in 1978 but in 1979 worked part-time in a private practice in Burnaby until 1989 when he retired for a second time. Dr Kellet specialised in Ophthalmology.