Special non-glare laminate has been tested using a spectrometer to ensure the colors are unchanged. Helps avoid fingerprints and damage to the plates.
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).
- Laminated pages provide lasting protection
- 6 plates for Screening
- 14 plates to diagnose color deficiency