WARNING: CANCER AND REPRODUCTIVE HARM - For more information go to www.P65Warnings.ca.gov.
Product Description
Accepted by leading authorities as a simple and accurate method for discovering congenital color blindness and red-green blindnessch in two forms, complete and incomplete. 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.
What is colorblindness?
Color blindness (color vision deficiency) is a condition in which certain colors cannot be distinguished, and is most commonly due to an inherited condition. Red/Green color blindness is by far the most common (99%) form and causes problems in distinguishing reds and greens. Another color deficiency Blue/Yellow also exists, but is rare (1%) and there is no commonly available test for it.
There is no treatment for color blindness, nor is it usually the cause of any significant disability. However, it can be very frustrating for individuals affected by it. Those who are not color blind seem to have the misconception that color blindness means that a color blind person sees only in black and white or shades of gray. While this sort of condition is possible, it is extremely rare.
The Ishihara color test is a test for color blindness. It was named after its designer, Dr. Shinobu Ishihara (1879-1963), a professor at the University of Tokyo, who first published his tests in 1917. It makes use of the peculiarity that in red-green blindness, blue and yellow appear remarkably bright compared to red and green. It consists of a number of colored plates, on each plate is printed a circle made of many different sized dots of slightly different colors, spread in a random manner. Within the dot pattern, and differentiated only by color, is a number. What, or even if, a number is visible indicates if and what form of color blindness the viewer has. The full test consists of thirty-eight plates, but the existence of a deficiency is usually clear after fewer plates. The Ishihara Color Charts are accepted by leading authorities worldwide as a simple and accurate test method.
The color plates are available in an album-type book for ease of handling. The books are printed in Japan and are protected by international copyright. Graham-Field has been the exclusive North American wholesale distributor of Ishihara Tests for over 30 years.
Size: 10 Plate Book (Unlettered Persons and Children)
Description: 10 Plate Book
Product Documents:
PROCESSING TIMES
Orders are processed as soon as they are received and usually shipped same day if ordered by 12:00 pm (CST) and the item is in stock. Orders begin the fulfillment process immediately and cannot be canceled or changed by our customer care representatives or our warehouse as we strive to ship as fast as possible. Your credit card is charged at the time of the order.
We do not ship orders on Saturdays, Sundays or holidays. Orders placed on Saturdays, Sundays or holidays will ship on the next business day.
ORDER CANCELLATION REQUESTS
MedicalSuppliesFast.com strives to deliver orders as quickly as possible. Orders are processed immediately and we are unable to change or cancel an order once you checkout. Cancellation requests after an order is processed is subject to our return policy.
SHIPPING COST AND ESTIMATED DELIVERY TIMES
Economy (estimated 5-15 business days) - $6.99
Standard (estimated 2 to 7 business days) - $15.00
Expedited shipping is not available at this time
SHIPPING RESTRICTIONS
Shipping to P.O. Boxes, Alaska, Hawaii or a Freight Fowarder?
Please contact us prior to placing your order to see if we can accommodate your shipping needs.
SPECIAL ORDER ITEMS
Special order items also require additional shipping time as these items are usually not stocked at our warehouses and require approximately 15-30 business days (or more depending on the product) for items to be received at our warehouse before it ships out. SPECIAL ORDER ITEMS ARE NON-RETURNABLE.
TRACKING ORDERS
Once your order has been shipped, you will receive an email with a tracking number. You can track your order using the tracking number on the carrier's website.
All PPE (PERSONAL PROTECTION EQUIPMENT) and NUTRITIONAL PRODUCTS ARE NON-RETURNABLE/NON-REFUNDABLE.
To be eligible for return, your item must be unused/unopened, contain all original parts and accessories, and in the original packaging material in which you received it.
Certain items are not eligible for return. The non-returnable items include:
- Food and nutritional items. This includes all enteral feeding supplies.
- Bathroom safety equipment, i.e., toilet frames, toilet seats, shower chairs, transfer benches, rehab shower commodes
- Mobility equipment and mobility equipment replacement parts, i.e. batteries, wheelchairs, wheelchair cushions, seats, rollators, walkers
- Hygiene-related products, including but not limited to undergarments, stockings/hose, ostomy/urostomy products, hernia belts, impotence pumps and parts, pessaries, pads, compression stockings/sleeves, hand sanitizers, wipes, toilet paper
- RESPIRATORY PRODUCTS. Due to Covid-19, all respiratory products are non-returnable.
- Products that are not in resalable condition
- Final sale or clearance items / Special order items
- Skin salves, ointments, creams, gels, lotions and wound care (bandages, dressings, etc)
- All IV/Blood collection, needles and syringes, feeding tubes and accessories, etc.