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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Color-discrimination threshold determination using pseudoisochromatic test plates
TLDR
A set of pseudoisochromatic plates for determining individual color-difference thresholds was produced and a high test validity and classification ability for the deficiency type and severity level was reported, comparable to that of the fourth edition of the Hardy–Rand–Rittler (HRR) test. Expand
Comparison of the Richmond HRR 4th edition and Farnsworth-Munsell 100 Hue Test for quantitative assessment of tritan color deficiencies.
TLDR
A test that compares six tritan plates from the HRR Pseudoisochromatic Plates 4th edition to 16 FM 100 Hue tritan caps, which showed quantitative differences in error rates with all light levels; thus they could serve equally well for assessing acquired deficiencies. Expand
The stability of color discrimination threshold determined using pseudoisochromatic test plates
Congenital red-green color vision deficiency is one of the most common genetic disorders. A previously printed set of pseudoisochromatic plates (KAMS test, 2012) was created for individual… Expand
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The aim of the study is to determine the consistency of the desired colour reproduction of the stimuli using calibrated printing technology available to anyone (EpsonStylus Pro 7800 printer was). 24… Expand
The Evolution of Colour Vision Testing
Colour vision testing forms an important part of the assessment of retinal pathology and congenital colour vision anomalies. Although the traditional Ishihara test and other pseudoisochromatic plates… Expand
Comparison of Ishihara and Hardy-Rand-Rittler Pseudoisochromatic Plates in Non-Arteritic Anterior Ischaemic Optic Neuropathy
TLDR
The anomaloscope that was considered the “gold standard” has several limitations and may not detect all acquired dyschromatopia, and whilst it is correct that pseudoisochromatic plates are screening tests and the results must be correlated with other optic nerve functions, the HRR test has a higher sensitivity and specificity than Ishihara colour plates in detecting Dyschromatopsia in non-arteritic anterior ischaemic optic neuropathy eyes. Expand
Poorer color discrimination by females when tested with pseudoisochromatic plates containing vanishing designs on neutral backgrounds
  • R. Baraas
  • Medicine, Psychology
  • Visual Neuroscience
  • 2008
TLDR
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. Expand
Comparative Analysis of the Mollon-reffin Minimal Colour Vision Test in Visually ‘Normal’ and Acquired Ocular Disease
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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. Expand
Detection of Congenital Color Vision Deficiency by Using Hardy-Rand-Rittler Pseudoisochromatic Test Plates
Objective: To screen, categorize and grade the severity of congenital color vision deficiency (CVD) by using Hardy-Rand-Rittler (HRR) pseudoisochromatic test plates and to detect the state of… Expand
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. Expand
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