{"product_id":"flip-book-lea-symbols®-lea-numbers®-pediatric-near-vision-low-contrast-book-40cm","title":"Flip Book: LEA SYMBOLS® \u0026 LEA NUMBERS® - Pediatric Near Vision Low Contrast Book (40cm)","description":"\u003cp\u003eThe \u003cstrong\u003ePediatric Near Contrast Test Booklet\u003c\/strong\u003e is designed to assess \u003cstrong\u003enear visual acuity and contrast sensitivity in children\u003c\/strong\u003e. It provides six contrast sensitivity levels—\u003cstrong\u003e100%, 25%, 10%, 5%, 2.5%, and 1.25%\u003c\/strong\u003e—with proportionally spaced (LogMAR) lines ranging from \u003cstrong\u003e20\/400 to 20\/16\u003c\/strong\u003e using Michelson contrast measures.\u003c\/p\u003e\n\u003cp\u003eEach page features \u003cstrong\u003eLEA SYMBOLS®\u003c\/strong\u003e on one side for children ages \u003cstrong\u003e3–5\u003c\/strong\u003e and \u003cstrong\u003eLEA NUMBERS®\u003c\/strong\u003e on the reverse for ages \u003cstrong\u003e5–8\u003c\/strong\u003e. Testing is performed at \u003cstrong\u003e16 inches (40 cm)\u003c\/strong\u003e, allowing all contrast levels to be evaluated under consistent illumination and testing conditions.\u003c\/p\u003e\n\u003cp\u003eContrast sensitivity testing can provide additional information about visual function beyond standard high-contrast visual acuity testing and can be useful for monitoring changes in low-contrast vision over time.\u003c\/p\u003e\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSix contrast levels from 100% to 1.25%\u003c\/li\u003e\n\u003cli\u003eLogMAR acuity range from 20\/400 to 20\/16\u003c\/li\u003e\n\u003cli\u003eLEA SYMBOLS® for ages 3–5\u003c\/li\u003e\n\u003cli\u003eLEA NUMBERS® for ages 5–8\u003c\/li\u003e\n\u003cli\u003eTesting distance: 16 in (40 cm)\u003c\/li\u003e\n\u003cli\u003eIncludes scorecard and comprehensive instructions\u003c\/li\u003e\n\u003cli\u003eIncludes normal ratios for comparison and graphing results\u003c\/li\u003e\n\u003cli\u003ePrinted on durable, high-quality styrene plastic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cstrong\u003eTesting distance: \u003c\/strong\u003e\u003cspan\u003e40 cm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eProduct type: \u003c\/strong\u003e\u003cspan\u003eVision Testing Aids\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eChart type: \u003c\/strong\u003e\u003cspan\u003eFlip Book\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eTest type: \u003c\/strong\u003e\u003cspan\u003eLow Contrast | Near Vision\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eChart format: \u003c\/strong\u003e\u003cspan\u003elogMAR\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eChart use type: \u003c\/strong\u003e\u003cspan\u003eHandheld\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eOptotype: \u003c\/strong\u003e\u003cspan\u003eLEA Symbols® | LEA Numbers®\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003ePatient type: \u003c\/strong\u003e\u003cspan\u003ePediatric | Adult\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eCertifications: \u003c\/strong\u003e\u003cspan\u003eCE\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"about__row\"\u003e\n\u003cdiv class=\"about__row\"\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e\u003cspan\u003e0.5 kg (1.1 lb)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAvailable Online Resources\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUser Guides:\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/good-lite.clickhelp.co\/articles\/product-documentation-publication\/flip-book-lea-symbols-lea-numbers-pediatric-near-vision-low-contrast-book-16-40cm-user-guide-610800\" rel=\"noopener\" target=\"_blank\" title=\" Pediatric Near Contrast Test - User Guide\"\u003ePediatric Near Contrast Test - User Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/store.good-lite.com\/apps\/resources\/score-sheet-model-610800\" rel=\"noopener\" target=\"_blank\" title=\"Near Contrast Testing Score Sheet\"\u003eNear Contrast Testing Score Sheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eArticle:\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/store.good-lite.com\/blogs\/news\/lea-vision-test-system\" title=\"The LEA® Vision Test System: The benchmark test for screening, for every stage.\" rel=\"noopener\" target=\"_blank\"\u003eThe LEA® Vision Test System: The benchmark test for screening, for every stage.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eTechnical Bulletins:\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/good-lite.clickhelp.co\/articles\/#!product-documentation-publication\/flip-book-low-contrast-test-251100-737000\" title=\"LEA Low Contrast Flip Books - Technical Bulletin\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/good-lite.clickhelp.co\/articles\/product-documentation-publication\/good-lite-flip-books\" rel=\"noopener\" target=\"_blank\" title=\"Good-Lite Flip Books - Technical Bulletin\"\u003eGood-Lite Flip Books - Technical Bulletin\u003c\/a\u003e\u003ca href=\"https:\/\/good-lite.clickhelp.co\/articles\/#!product-documentation-publication\/flip-book-low-contrast-test-251100-737000\" title=\"LEA Low Contrast Flip Books - Technical Bulletin\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eBack Order \/ Special Order Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis product is available on special order. Email us \u003cspan\u003eto \u003c\/span\u003e\u003ca href=\"mailto:marketing@sensorylogix.com\"\u003eplace your order\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrepayment is required on special orders.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNo refunds or returns on special order items.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(222, 86, 40);\"\u003e\u003cstrong\u003eExtended lead times apply. ETA to be confirmed when placing your order.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Sensory Logix Store","offers":[{"title":"Default Title","offer_id":67963003240754,"sku":"GL-610800","price":7473.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/7545\/4514\/files\/Pediatric_Near_Vision_Low_Contrast_Flip_Book.png?v=1791908100","url":"https:\/\/shop.sensorylogix.com\/products\/flip-book-lea-symbols%c2%ae-lea-numbers%c2%ae-pediatric-near-vision-low-contrast-book-40cm","provider":"Sensory Logix Store","version":"1.0","type":"link"}