{"product_id":"ishihara-book-38-plates","title":"ISHIHARA BOOK 38 PLATES","description":"\u003ch2\u003eISHIHARA BOOK 38 PLATES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDr Shinobu Ishihara introduced in 1917—almost 100 years ago—the \u003cstrong\u003emost well known color blindness test\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eOur Ishihara Color Blindness Test book are perfect for testing the color deficiency.\u003c\/li\u003e\n\u003cli\u003eEvery single color test plate of our 38 plates Ishihara Color Blindness Test charts is precisely printed to measure accurately.\u003c\/li\u003e\n\u003cli\u003eThere exist four different types of plates:\n\u003cul\u003e\n\u003cli\u003e\n\u003cem\u003eVanishing design:\u003c\/em\u003e Only people with good color vision can see the sign. If you are colorblind you won’t see anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eTransformation design:\u003c\/em\u003e Color blind people will see a different sign than people with no color vision handicap.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eHidden digit design:\u003c\/em\u003e Only colorblind people are able to spot the sign. If you have perfect color vision, you won’t be able to see it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cem\u003eClassification design:\u003c\/em\u003e This is used to differentiate between red- and green-blind persons. The vanishing design is used on either side of the plate, one side for deutan defects an the other for protans.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eIf you can see all of them you are definitely color abnormal, as some of them should only be seen by colorblind people and others only by non-colorblind ones\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"\/pages\/contact\"\u003eCONTACT US FOR BULK ORDERS\u003c\/a\u003e\u003c\/p\u003e","brand":"bexcoexports","offers":[{"title":"Default Title","offer_id":43177182691391,"sku":null,"price":44.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/4421\/6895\/files\/Ishihara-Tests-Book-38-plates_59116b6e-eaf9-41ec-82fc-8f7d4bba14b0.jpg?v=1777378479","url":"https:\/\/bexcoexports.com\/products\/ishihara-book-38-plates","provider":"bexcoexports","version":"1.0","type":"link"}