Ishihara Test Book- 38 Plates

$0.00

Model: 38-Plates

Ishihara Test Book- 38 Plates

Features:

This series of plates is designed to provide a test which gives a quick and accurate assessment of colour vision deficiency of congenital origin .This is the commonest form of colour vision disturbances.

Specifications:

Number of Plate	Normal Person	Person with Red-Green Deficiencies				Person with Total Colour Blindness and Weakness
1	12	12				12
2	8	3				X
3	6	5				X
4	29	70				X
5	57	35				X
6	5	2				X
7	3	5				X
8	15	17				X
9	74	21				X
10	2	X				X
11	6	X				X
12	97	X				X
13	45	X				X
14	5	X				X
15	7	X				X
16	16	X				X
17	73	X				X
18	X	5				X
19	X	2				X
20	X	45				X
21	X	73				X
		Protan		Deutan
		Strong	Mild	Strong	Mild
22	26	6	(2)6	2	2(6)
23	42	2	(4)2	4	4(2)
24	35	5	(3)5	3	3(5)
25	96	6	(9)6	9	9(6)

The mark X shows that the plate cannot be read. Blank space denotes that the reading is indefinite. The numerals in parenthesis show that they can be read but they are comparatively unclear.

Number of Plate	Normal Person	Protan(Strong)	Protan(Mild)	Deutan(Strong)	Deutan(Mild)	Person with Total Colour Blindness and Weakness
26-27	Purple and red lines	Purple line	Purple line and (red lines)	Red line	(Purple line) and red lines

Number of Plate	Normal Person	Person with Red-Green Deficiencies	Person with Total Colour Blindness and Weakness
28-29	X	line	X
30-31	Bluish-green line	X or different color line	X or different color line
32-33	Orange line	X or different color line	X or different color line
34-35	line connecting the bluish-green and yellowish-green	line connecting the bluish-green and purple	X
36-37	line connecting the purple and orange	line connecting the purple and bluish-green	X
38	line	line	line

The mark X shows that the plate cannot be read. Blank space denotes that the reading is indefinite. The color line in parenthesis show that they can be follow but they are comparatively not easy to follow.

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