United States
2024 High Quality New Publish 38 Plates Optometry Color Blindness Color Deficiency Test Book
Main features:
-A professional test book, which is a simple and accurate method for discovering congenital color blindness and red-green blindness, each in two forms, complete and incomplete.
-It includes four special plates for tests to determine the kind and degree of defect in color vision.
-Makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared with red and green.
-Color plates encased in specially designed album-type books for ease of handling. Detailed instructions included.
-Individuals with color vision defect should see a different figure from individuals with normal color vision.
Product sellpoints
Convenient and fast: The design of this product is simple and convenient. it can be used for a long time without any tools, which is very convenient.
Guaranteed service: We are committed to providing customers with the best products and services. if you have any questions, please feel free to contact us.
Concise design: The simple design allows you to use your laptop with a more concise look, and it is easy to read.
Processing time
According your order list. we will supply delivery time .
Commonly is 5-7 work days after we confirm payment
Shipping time
By Express : 3-7 days . Door to door service
By Air : 3-7 days . (the goods arrival at your local air ports
By sea : 30-40 days (the goods arrival at your local sea ports )
PS : by air or by sea, if you need door to door service, please tell us . we will help you checking the extra door to door cost.
How many months warranty do you provide ?
one year
What should I do if the machine have question ?
For ensuring all the items are in good quality, we will test all products before the packages were sent out. Once the machine have some question, please don't worry. kindly send us some images of the situation , Video and machine series, and explain the question in where . we will supply solution to you deal soon.
What should I do if the spare parts is broken in Warranty ?
If in Warranty, some spare parts broken in the Use. kindly supply picture or video , and machine series number .
We will send the spare parts by express to you soon.. and we bear express cost .
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