| Description | Roth’s 28 Hue test studies the characteristic axies of dyschromatopsia similar to the Farnsworth D15, however this 28 hue test provides a greater degree of sensitivity. Case comes with a transparent base to make scoring more readable. Kit includes | Farnsworth D15 test is used to separate medium and strong color defect vs normal. Farnsworth D15 come in plexiglas boxes which permit the patient to select the sequence of chips. Then the box is closed and the selections can be read thru the bottom | 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 | Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness of two type total color blindness and red/green blindness. This book is used for children and the illiterate. | 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. |