Ishihara Test Book- 38 Plates

Product Description

Manufacture CP-20B Optical Lens Edger for Sale

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.

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.
 

Chongqing Vision Star Optical Co., Ltd is a professional medical device supplier from southwest of China. We have many years' experiences in medical equipment manufacturing and trading. Our products range includes optometry, ophthalmology, optical lab, dental, ultrasound, beauty and other hospital department equipment. Our company always focuses on enhancing production technology and product quality. Our cooperative factories have high-tech manufacturing workshop, independent research and development center, comprehensive laboratory, modern advanced production line, strict quality control system, clean and dust-free production environment, and international packaging standard. Our products have most of the required certificates, and they have been exported to more than 150 countries worldwide. Our company has established long-term win-win relationship with more than 50,000 distributors, optical stores, clinics, hospitals, beauty salons, spas and so on. We have several customer-visits from the world each month, and all of them have highly praised both our products and services. We offer 1 to 3 year warranty, competitive price, OEM service, logo and label customization, professional and detailed brochures, operation manual, and product introduction videos. We have experienced and responsible sales team ready to help every customer. We also have expert after-sales engineers, who will provide you free online operation training, software installation and maintenance, and lifetime technical support. We warmly welcome every friend worldwide to visit our company or video chat with us to inspect our showroom and products.