HRR Pseudoisochromatic Test, 4th Edition. The HRR tets includes the four demonstration plates, the six screener plates and the 14 diagnostic series for a total of 24 plates. Each of these plates has its own tab for easy selection and to keep the pages clean. This test also includes instructions for the administrator and a laminated copy of the score sheet. Pages are numbered on the reverse side to avoid easy detection by the patient. The score sheet can then be photocopied or copied into the patient's record.