Colour Vision Tests
Uses numbers and tracing patterns to test for red and green deficiencies only.
Additional plate versions help guard against memorization. 24 and 38 plate versions
use accordion mounting.14, 24 and 38 plates available and paediatric 12 plate
Includes four demonstration plates, six screener plates and 14 diagnostic series for a
total of 24 plates. Plates are numbered on the reverse. Plates are tabbed for easy
selection and to help keep the pages clean. Includes instructions for the test
administrator, laminated score sheets, and camel's hair brush for use by the patient
to help avoid touching the plates. A pad of score sheets is available separately
D15 test contains a reference disc and fifteen numbered discs which make up an incomplete color circle. Patient arranges the discs and then evaluation of the patient's arrangement separates 'normal' color perception from moderate and strong defects in deutan, protan or tritan axis color discrimination. FD15 versions boxed in a clear plastic container and includes instructions, non-latex gloves and laminated score card
Available also in a magnetic form
Includes 10 plates. Similar in concept to the Farnsworth D15 test. Presents the sample and four additional figures, which provide normal,deutan, protan, and tritan choices.
Useful for determination of inherited defects for protan and deutan errors as well as acquired color vision defects. Third Edition.