colour vision
ishihara
The Ishihara test is a colour perception test for red-green colour deficiencies, the first in a class of successful colour vision tests called pseudo-isochromatic plates
cvtme
Color Vision Testing Made Easy (CVTME) is the paediatric gold standard for identifying genetic (red/green) colour vision deficiencies in children as young as 3.
the farnsworth D-15 test
The Farnsworth D-15 test is a so called arrangement test. This type of colour blindness tests are based on a set of coloured plates or discs which have to be arranged in the correct order. Colourblind people will have difficulties to arrange the given colours and make mistakes. Based on this mistakes and the resulting confusion vector, the type of your colour blindness and as well its severity can be calculated.
lanthony Desaturated Panel colour
The Lanthony Desaturated Panel Color test is identical to the Farnsworth D-15, but the 15 disks are desaturated (lighter in hue). This allows the screener to determine whether or not the subject has the ability to discriminate between subtle color variations. The test can distinguish between normal color perception and mild deficiency in protan/deutan (red-green) or tritan (blue-yellow).
Both the Panel D-15 and Lanthony differentiate among protan, deutan, and tritan defects by the axes along which confusions are made.
