![The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test - Cole - 2006 - Clinical and Experimental Optometry - Wiley Online Library The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test - Cole - 2006 - Clinical and Experimental Optometry - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/a0f9fd5b-cc7e-4619-9f9b-e9342dadafbc/cxo_015_f3.gif)
The new Richmond HRR pseudoisochromatic test for colour vision is better than the Ishihara test - Cole - 2006 - Clinical and Experimental Optometry - Wiley Online Library
![Pseudo-Isochromatic Plates for Color Perception, American Opical Company, 1st Ed. [1940]. *Note: The aging of this book & potential ink/page discolouration is not suitable for current testing standards. Posted as a historical Pseudo-Isochromatic Plates for Color Perception, American Opical Company, 1st Ed. [1940]. *Note: The aging of this book & potential ink/page discolouration is not suitable for current testing standards. Posted as a historical](https://preview.redd.it/pseudo-isochromatic-plates-for-color-perception-american-v0-jtm0vxisawi81.jpg?width=640&crop=smart&auto=webp&s=db9b79aaf2b09f1c3ddf568e98a68a8838e774bf)
Pseudo-Isochromatic Plates for Color Perception, American Opical Company, 1st Ed. [1940]. *Note: The aging of this book & potential ink/page discolouration is not suitable for current testing standards. Posted as a historical
![HRR 4th Edition Pseudoisochromatic Test - English Instruction Version from Good-Lite (Formerly Richmond Products, Inc.) - Product Description and Details HRR 4th Edition Pseudoisochromatic Test - English Instruction Version from Good-Lite (Formerly Richmond Products, Inc.) - Product Description and Details](https://media.optometryweb.com/m/31/images/spanish-hrramsler-combination-19105-400x300.jpg?ts=638246827995420419)
HRR 4th Edition Pseudoisochromatic Test - English Instruction Version from Good-Lite (Formerly Richmond Products, Inc.) - Product Description and Details
![AO H-R-R pseudoisochromatic plates by Hardy, LeGrand; Rand, Gertrude; Rittler, M. Catherine: (1955) | Jason Rovito, Bookseller AO H-R-R pseudoisochromatic plates by Hardy, LeGrand; Rand, Gertrude; Rittler, M. Catherine: (1955) | Jason Rovito, Bookseller](https://pictures.abebooks.com/inventory/31126368464_2.jpg)