Mysteries of Color

Edward Choi

This is your fourth case. This man was the paramedic. When he was tested from the judge, here was his response: We got an emergency call and went immediately to the scene, when I arrived I saw a man on the floor and assumed he was sleeping. My colorblindness had me not able to see the blood on his green shirt. I did not know he was bleeding until it was too late, during that time we brought him straight to the hospital. Being one of the people who had seen Mr. Jones, we did a second test on him as well. To understand the second test, please click on the link. His results on the second test were:

Photo #	What you see	Correct Ö Correct X Incorrect	Diagnosis
1	12	Ö 12	This shows he is normal, everybody should be able to see this one, even color deficient people.
2	3	X 8	This shows a Red-Green color deficiency.
9	71	X 74	This shows a Red-Green color deficiency.
12	?	X 97	This shows a Red-Green color deficiency.
17	?	X 73	This shows a Red-Green color deficiency.
21	?	Ö	Correct
23	41	X 42	Since he only saw the 4, this shows a strong deutan color deficiency.
24	?	X 35	This shows a Red-Green color deficiency.
27	traced red line		This shows a deutan color deficiency. (Green weak)
29	nothing		This shows a Red-Green color deficiency.
31	nothing		This shows a Red-Green color deficiency.
32	nothing		This shows a Red-Green color deficiency.
35	turquoise only		This shows a deutan color deficiency. (Green weak)
37	pink only		This shows a deutan color deficiency. (Green weak)
38	traced correctly		Correct

From these results, we have classified case 4 as strong deutan colorblind. This means he is weak in green, and when blended with red, he cannot see it at all.

The next test we did on him was test 3, please click on the link so you understand what test 3 was.

Case 4 has a deutan color deficiency. This means that he is weak in green. On the second picture, he colored the blue-yellow-red pattern blue-yellow-green-red. This shows his green weakness. He thought there was green in the red but actually there was just red.

The last part of the case testing was test 4. Please read test 4 to understand the final process.

Red Filter: (only correct answers displayed)

Left

Right

Top

25

29

Middle

45

Bottom

6

8

Green Filter: (only correct answers displayed)

	Left	Right
Top	25
Middle		56
Bottom