{"product_id":"linear-spaced-translucent-sloan-vision-chart","title":"Linear Spaced Translucent Sloan Vision Chart","description":"\u003cp\u003eTwo smaller groups 10\/25 to 20\/8 for repetitive eyesight testing (20\/50 to 20\/16 equiv.).\u003c\/p\u003e\n\u003cp\u003eCan be wall-mounted.\u003c\/p\u003e\n\u003cp\u003eSloan optotypes were developed by Louise Sloan in 1959. She developed a set of 10 optotypes that had the same basis as the Snellen optotypes, the 5x5 grid. However, Sloan optotypes do not use serifs and use a geometric progression. This Sloan chart still uses Snellen equivalents and is calibrated for testing at 10 feet.\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Default Title","offer_id":45921482768545,"sku":"2178US","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/c1a11e28afb03c9d81c096faa0a5ce8e_XL-scaled-1.jpg?v=1776157139","url":"https:\/\/precision-vision.com\/products\/linear-spaced-translucent-sloan-vision-chart","provider":"Precision Vision","version":"1.0","type":"link"}