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Sales Director: John Gao

Cellphone: +86-13618377608

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Ishihara Test Book- 38 Plates

Model: 38 Plates
Quantity:

Trusted Services: 1. Video chat to check our factory and products; 2. Free online technical support and training; 3. Free online installation support; 4. 1-3 Years quality warranty; 5. Lifetime after sales support.

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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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