HRR Pseudoisochromatic Color Blindness Test - 4 Plates
HRR 4th Edition Pseudoisochromatic Test – Ophthalmic Malaysia
Color-discrimination threshold determination using pseudoisochromatic test plates | Semantic Scholar
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 Digital Color Test – Good-Lite
Color Vision Test - Jutron Vision
Test de color HRR de Trusetal
HRR Pseudoisochromatic Plates
HRR Standard Pseudoisochromatic Test, 4th Edition – Good-Lite