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HRR 4TH EDITION: WORLD'S MOST ADVANCED COLOR TEST

The HRR (Hardy Rand and Rittler) 4th Edition provides several very important features to provide the most advanced color vision test available: congenital and acquired testing, identification of the type of defect and diagnosis of the extent of the defect as well as quick positive classification of normals. The HRR employs a sophisticated test strategy that virtually eliminates the potential for memorization and malingering. The figures used by the HRR Pseudoisochromatic Plates are independent of language and suitable for both adults and children. The HRR 4th Edition has achieved worldwide acceptance with instructions for the test administrator available in 24 different languages. Extensive clinical trials employing almost 100 normals and 125 color defectives testify to HRR efficacy. 

EASY TO ADMINISTER

The HRR Pseudoisochromatic Plate Test 4th Edition supports very efficient color deficiency screening. The first four plates are used to show the patient how the test works. The fourth plate in this demonstration series has no figure and serves to potentially uncover attempts to memorize this test. The next six plates (screening series) present the most difficult protan, deutan and tritan (red, green, yellow, and blue) targets. Success with these plates defines the subject as having ‘normal color vision’ and completes the test. The subsequent 14 plates are the diagnostic series and provide diagnostic as to the extent (mild, medium or strong) and type of defect (Protan, Deutan, Tritan). 

CHOICE OF PACKAGING AND PLAQUENIL REFERRAL PACKAGE

The most popular configuration of the HRR is called the HRR Combo and provides the full 24 plates laminated with plastic to protect them against the acid in fingerprints. The Combo also provides a full set of Amsler Grids. Amsler testing completes the prescribed regimen for acquired color testing such as Plaquenil Screening. A less expensive configuration called the HRR Laminated Version provides the full 24 HRR Plates without the Amlser Grids.The Standard configuration includes the full 24 plates printed on acid free archival paper (similar to the Ishihara Plates). All configurations include a laminated score sheet, English Instructions and a pointer to be used by the patient to identify the targets. 

To learn more about the HRR 4th Edition or to purchase, please click here.