Colour blindness test chart, illustration. People with good colour vision can see the number 90, while those with protanopia, or red-green colour blindness, cannot. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / CHONGQING TUMI TECHNOLOGY LTD |
Taille de l’image : | 4346 px × 3217 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |