This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Bio-Chemistry), Subject name: Biochemistry
[{'content': 'Colour vision is tested with help of the \nSelect and explain. \nA. Amsler chart, B. Arden gratings, C. Ishihara plates, D. Snellen Chart', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) Ishihara plates # ISHIHARA COLOR TEST is an example of a color perception test for red-green color deficiencies.> It was named after its designer, Dr. Shinobu Ishihara, a professor at the University of Tokyo.> The test consists of a number of colored plates, called Ishihara plates, each of which contains a circle of dots appearing randomized in color and size.> Within the pattern are dots which form a number or shape clearly visible to those with normal color vision, and invisible, or difficult to see, to those with a red-green color vision defect.', 'role': 'assistant'}]