Gima ISHIHARA COLOUR TESTS User guide

Gima S.p.A. - Via Marconi, 1 - 20060 Gessate (MI) Italy
Italia: tel. [phone] - fax [phone]
Export: tel. [phone]/221/225 fax [phone]
[e-mail] - export@gimaitaly .com

www.gimaitaly.com

TEST DAL TONISMO ISHIHARA - Libro da 24 tavole
ISHIHARA COLOUR TEST - Book of 24 plates
TEST CHROMA TIQUE D’ISHIHARA - Livre de 24 planches
TEST DAL TONISMO ISHIHARA - Libro de 24 tablas

MANUALE D’USO E MANUTENZIONE

INSTRUCTIONS DE FONCIONNEMENT ET ENTRETIEN

USE AND MAINTENANCE BOOK

MANUAL DE USO Y MANTENIMIENTO

ATTENZIONE: Gli operatori devono leggere e capire completamente questo manuale

prima di utilizzare il prodotto.
ATTENTION: The operators must carefully read and completely understand the
present manual before using the product.
AVIS: Les opérateurs doivent lire et bien comprendre ce manuel avant d’utiliser le
produit.
ATENCIÓN: Los operadores tienen que leer y entender completamente este manual
antes de utilizar el producto.

M31291-M-Rev.1-04.13

ITALIANO

4

Numero di

tavola

Soggetti con

vista normale

Soggetti con carenze sul

rosso-verde

Soggetti con

daltonismo

totale

1212121
28 3 X

39207X
45 2 X
53 5 X
65171X
74712X
86 X X
954XX

015 X X
117 X X
2161XX
3137XX
41X 5 X
51X 54X

Protan Deutan

Forte Lieve Forte Lieve

616266)2(2)6(2

712422)4(4)2(4

La lettera "X" significa che la tavola non viene letta. Le cifre tra parentesi indicano una
lettura poco chiara.

ENGLISH

Introduction

The plates for color blindness testing are designed to provide a test which gives a quick
and accurate assessment of color vision deficiency of congenital origin.
Most cases of congenital color vision deficiency are characterized by a red-green deficiency.
There is also a very rare group of persons who suffer from total color blindness and show
a complete failure to discriminate any color variations, usually with an associated impairment
of central vision with photophobia and nystagmus.
Furthermore, a failure in the appreciation of blue and yellow may be termed tyritanomalia if
partial, and tritanopia if complete, but, even if such cases do exist, they are extremely rare.
The plates are not designed for the diagnosis of such cases.

Only a trained eye care professional can properly diagnose vision disorders,

home use of the charts is not a replacement for professional vision testing.

5

How to use the test

The plates are designed to be appreciated correctly in a room which is lit adequately by
daylight. The introduction of direct sunlight or the use of electric light may produce some
discrepancy in the results because of an alteration in the appearance of shades of color.
When it is convenient only to use electric light, it should be adjusted as far as possible to
resemble the effect of natural daylight.
The plates should be held at a distance of approx 70 cm. from the subject and tilted so that
the plane of the paper is at right angles to the line of vision.
The numerals or symbols which are seen on plates are stated, and each answer should
be given without more than three seconds delay. It is not necessary in all cases to use the
whole series of plates.

Care of plates

The avoid fading of the colors; care must be taken to keep the plates store in case except
during use and not to expose the plates to strong light. Tracing curves must be soft in order
to prevent scratching.

Explanation of the plates

No. 1. Both the normal and those with all sort of color vision deficiencies read it as 12.
No. 2, 3. The normal read them as 8 (No 2) and 29 (No. 3). Those with red-green deficiencies

read them as 3 (No. 2), and 70 (No. 3). Those with total color blindness can not read any
numeral.
Nos. 4-7. The normal read them as 5 (No. 4), 3 (No. 5), 15 (No. 6) and 74 (No. 7). Those with
red-green deficiencies read them as 2 (No. 4), 5 (No.5), 17 (No.6) and 21 (No.7). Those
with total color blindness can not read any numeral.
No. 8, 9. The normal read them as 6 (No.8) and 45 (No.9). The majority of those with color
vision deficiencies can not read them or read them incorrectly.
Nos. 10-13. The normal read them as 5 (No.10), 7 (No.11), 16 (No.12) and 73 (No.13). The
majority of those with color vision deficiencies can not read them or read them incorrectly.
Nos. 14, 15. The majority of those with red-green deficiencies read them as 5 (No.14) and
45 (No.15). The majority of the normal and those with total color blindness cannot read any
numeral.
Nos. 16, 17. The normal read them as 26 (No.16) and 42 (No.17). In protanopia and strong
protanomalia only 6 (No.
both numerals on each plate are read but the 6 (No.16) and 2 (No.17) are cleared than the
other numerals. In deuteranopia and strong deuteranomalia only 2 (No.16) and 4 (No.17)
are read, and in case of mild deuteranomalia both numerals on each plate are read but the
2 (No.16) and 4 (No.17) are clearer than the other numerals.
No. 18. In tracing the winding lines between the two X’s, the normal trace along the purple
and red lines. In protanopia and strong protanomalia only the purple line is traced, and in
the case of mild protanomalia both lines are traced but the purple line is easier to follow. In
deutaneropia and strong deutanomalia only the red line is traced, and in case of mild
deutanermalia both lines are traced but the red line is easier to follow.
No. 19. In tracing the winding line between the two X’s, the majority of those with red-green
deficiencies trace along the line, but the majority of the normal and those with total color
blindness are unable to follow the line.
No. 20. In tracing the winding line between the two X’s, the normal trace the bluish-green
line, but the majority of those with color vision deficiencies are unable to follow the line or
follow a line different from the normal one.

16) and 2 (No.17) are read, and in case of mild protanomalia

ENGLISH

ENGLISH

No. 21. In tracing the winding line between the two X’s, the normal trace the orange line, but
the majority of those with color vision deficiencies are unable to follow the line or follow a
line different from the normal one.
No. 22. In tracing the winding lines between the two X’s, the normal trace the line connecting the
bluish-green and yellowish-green, those with red-green deficiencies trace the line connecting
the bluishgreen and purple, and those with total color blindness can not trace any line.
No. 23. In tracing the winding lines between the two X’s, the normal trace the line connecting
the purple and orange, those with red-green deficiencies trace the line connecting the purple
and bluishgreen, and those with total color blindness and weakness can not trace any line.
No. 24. Both the normal and those with all sort of color vision deficiencies can trace the
winding line between the two X’s.

Analysis of the results

As assessment of the readings of plates 1 to 15 determines the normality or defectiveness
of color vision.
If 13 or more plates are read normally, the color vision is regarded as normal. If only 9 or
less than 9 plates are read normally, the color vision is regarded as deficient. However, in
reference to plates 14 and 15, only those who read the numerals 5 and 45 and read them
easier than those on plates 10 and 9 are recorded as abnormal readings.
It is rare to find a person whose recording of normal answers is 14-16 plates. An assessment
of such a case requires the use of other color vision tests, including the anomaloscope.

6

Number of

Plate

Normal

Person

Person with Red-Green

Deficiencies

1212121
28 3 X
39207X
45 2 X
53 5 X
65171X
74712X
86 X X
954XX

015 X X
117 X X
2161XX
3137XX
41X 5 X
51X 54X

Protan Deutan

Strong Mild Strong Mild

616266)2(2)6(2

712422)4(4)2(4

The letter

“X” shows that the plate cannot be read. The numerals in parenthesis show that

they can be read but they are comparatively unclear.

Person with Total
Colour Blindness

and Weakness

:

13

Leggere e seguire attentamente

le istruzioni per l’uso

Please read instructions carefully

31291

FABBRICANTE / MANUFACTURER

KANEHARA TRADING INC.
23114 YUSHIMA, BUNKYOKU,
TOKYO, JAPAN

Codice prodotto

Product code

Numero di lotto

(vedi scatola / imballo)

(see box / package)

Lot number

Simbologia / Index of symbols

Tenere al riparo dai raggi solari

Keep away from direct sunlight

Custodire in luogo asciutto ed al

riparo dall’umidità

Store in a dry place and avoid

humidity.

Prodotto conforme alla Direttiva

Europea n. 93/42/CEE (e
successive modifiche) sui

dispositivi medici

Product complies with European

Directive no. 93/42/EEC (and

following amendments) regarding

medical devices

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