The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test

@article{Cole2006TheNR,
  title={The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test},
  author={Barry L. Cole and Ka-Yee Lian and Carol Lakkis},
  journal={Clinical and Experimental Optometry},
  year={2006},
  volume={89}
}
Aim:  The Hardy‐Rand‐Rittler (HRR) pseudoisochromatic test for colour vision is highly regarded but has long been out of print. Richmond Products produced a new edition in 2002 that has been re‐engineered to rectify shortcomings of the original test. This study is a validation trial of the new test using a larger sample and different criteria of evaluation from those of the previously reported validation study. 
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TLDR
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TLDR
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TLDR
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TLDR
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Poorer color discrimination by females when tested with pseudoisochromatic plates containing vanishing designs on neutral backgrounds
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According to reports of female carriers of color-vision deficiency having problems with the Ishihara test and of females having poorer color discrimination than males, Norway's NTCV test results show that normal trichromatic females are more likely to perform than males in terms of color discrimination.
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TLDR
The Mollon-reffinMinimal Test (MRMT) is compared against the Ishihara and City colour vision tests to assess correlation levels between tests for defect detection, severity grading and defect type classification.
Detection of Congenital Color Vision Deficiency by Using Hardy-Rand-Rittler Pseudoisochromatic Test Plates
TLDR
The HRR test may be used to detect, classify and grade severity of CVD and to detect the state of awareness of people about their abnormal color vision, which was significantly associated with male gender and increased severity of the disease.
Psychophysical Evaluation of Congenital Colour Vision Deficiency: Discrimination between Protans and Deutans Using Mollon-Reffin’s Ellipses and the Farnsworth-Munsell 100-Hue Test
TLDR
The MR test was more sensitive than the FM 100 test, separated individuals by dysfunctional groups with greater precision, provided a more sophisticated quantitative analysis, and its use is appropriate for a more refined evaluation of different phenotypes of red-green colour vision deficiencies.
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References

SHOWING 1-10 OF 24 REFERENCES
Colorimetric analysis of four editions of the Hardy-Rand-Rittler pseudoisochromatic tests
  • S. Dain
  • Medicine
    Visual Neuroscience
  • 2004
TLDR
While the two most recent editions much more closely resemble the original AO HRR and the chromaticities are much better aligned on the dichromatic confusion lines, the excitation purities of the plates are less well matched in the Richmond Products editions.
Evaluation of an updated HRR color vision test
TLDR
The new 4th edition of the HRR test, produced in 2002 by Richmond Products, is evaluated for a group of subjects with normal color vision and a group who had been previously diagnosed as having color vision deficiencies.
Tests for color deficiency based on the pseudoisochromatic principle; a comparative study of several new tests.
TLDR
Tests composed of pseudoisochromatic plates provide one of the simplest methods of distinguishing between normal and deficient red-green color perception and various selections of the more highly diagnostic plates were proposed.
An evaluation of the AO H-R-R pseudoisochromatic plates; a test for detecting, classifying, and estimating the degree of defective color vision.
TLDR
The report will deal only with the test as a device for analyzing red-green vision, since the number of subjects who have made errors in the blue-yellow series of plates is too small to warrant conclusions as to the value of the plates of this series.
The C‐100:a new dichotomiser of colour vision defectives
This paper evaluates a new instrument (C‐100) which employs flicker photometry or silent substitution to determine the type of colour vision defect (protan or deutan). Specifically, this study
Does the Farnsworth D15 test predict the ability to name colours?
TLDR
The Farnsworth D15 test is widely used to provide advice to patients with abnormal colour vision and is often used for occupational selection when reliable recognition of surface colour codes is required, but there has been no study of whether a person who passes the D15 can reliably name surface colours.
Clinical use of the American Optical Company (Hardy, Rand and Rittler) pseudoisochromatic plates for red‐green colour deficiency
  • J. Birch
  • Physics
    Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians
  • 1997
TLDR
The results show that only two rather than four grading categories can be distinguished by the HRR plates and that both the D15 and theHRR plates are needed in a vocational test battery to establish the severity of colour deficiency.
H–R–R Polychromatic Plates*
TLDR
The practical importance of a simply administered, comprehensive test, such as is provided by the H-R-R plates, to vocational selection and guidance is discussed, and an example given of their application in the radio and television industry.
Effect of illumination in testing color vision with pseudo-isochromatic plates.
  • I. Schmidt
  • Engineering
    Journal of the Optical Society of America
  • 1952
TLDR
It is recommended that only artificial daylight of a standardized color temperature and intensity be used to obtain comparable results in pseudo-isochromatic plate tests.
...
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