| Description | These color vision tests have been designed by Dr Hahn for the screening, classifying the type and estimating the grade of color deficiency. These plates are designed to measure Red, Green, Blue, Yellow. They provide classification of strong, medium | HRR 4th edition pseudoisochromatic test from Richmond Products 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 and clean page | This kit consists of a ‘Matching Card’, three HRR symbol cards and instructions. Kit is intended to help prepare a child for subsequent HRR 4th Edition color testing. There are several ways to use the test. For the youngest patients, the parents can | This is a reduced form of the 100 Hue test and L'Anthony New Color Test. The 40 Hue test is obviously quicker to administer. It provides extensive chromatic sensitivity and gives a quantitative score. Kit includes 100 score pads. | 70 discs to investigate acquired color deficiency. Quantifies neutral zone characteristics of dyschromatopsia and evaluates the relative luminance. |