{"product_id":"ishihara-colour-charts-10-charts","title":"Ishihara Colour Charts 10 Charts","description":"\u003cspan class=\"c-text__label\"\u003eProduct overview\u003c\/span\u003e\n \u003cul class=\"c-text__list\"\u003e\n \u003cli\u003eColour test charts\n\u003c\/li\u003e\n \u003cli\u003eFor determining deficiencies in visual colour acuity\n\u003c\/li\u003e\n \u003cli\u003eBound book\n\u003c\/li\u003e\n \u003cli\u003eAvailable with 10, 14, 24 or 38 Ishihara charts\n\u003c\/li\u003e\n \u003cli\u003eAlso available as a version for illiterate patients\u003c\/li\u003e\n \u003c\/ul\u003e \u003ch4\u003eIshihara Colour Charts\u003c\/h4\u003e\n\u003cp\u003eThe Ishihara colour charts are used for quick and \u003cb\u003ereliable screening of congenital colour vision deficiencies\u003c\/b\u003e, such as red-green deficiency and the less common blue-yellow deficiency. Patients that are affected by a red-green deficiency have a more difficult time differentiating between red and green than do those with normal vision. Approximately 10 % of men and 0.5 % of women in Europe are affected.\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003ecolour flecks\u003c\/b\u003e on an Ishihara chart are printed\u003cb\u003e in various colour tones and sizes\u003c\/b\u003e to create numbers or letters. Patients with red-green deficiency can only distinguish colours with difficulty or not at all and have difficulty recognising the numbers or letters displayed. With the help of the colour charts, the optometrist can \u003cb\u003ediagnose the presence and severity of red-green deficiencies.\u003c\/b\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIshihara colour charts\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eColour charts for detecting deficiencies in visual colour acuity\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eIdeal for vision testing school-aged children and adults\u003c\/li\u003e\n\u003cli\u003eBound book\u003c\/li\u003e\n\u003cli\u003eTest cards available in various quantities\u003c\/li\u003e\n\u003cli\u003e\u003cb\u003eSpecial boards available for screening young children and illiterate people\u003c\/b\u003e\u003c\/li\u003e\n\u003cli\u003eDelivery quantity: 1 book with 10, 14, 24 or 38 charts\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orange Medical","offers":[{"title":"10 Charts","offer_id":51895379001671,"sku":"135425","price":115.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/6301\/9079\/files\/135425_farbtafeln_ishihara_1_0f40ea0a-3fd5-4776-8580-8b290a2825c7.jpg?v=1752054020","url":"https:\/\/orangemedical.co.uk\/products\/ishihara-colour-charts-10-charts","provider":"Orange Medical","version":"1.0","type":"link"}