{"product_id":"original-series-sloan-letter-etdrs","title":"Original Series Sloan Letter ETDRS®","description":"\u003cp\u003eThe Original Series Sloan Letter ETDRS® chart family — Chart 1, Chart 2, Chart 3, or the full Set of 3 — using the standard Sloan letter optotypes in the original ETDRS series across four testing distances (2 m, 2.5 m, 3 m, 4 m).\u003c\/p\u003e\u003cp\u003eDesigned to fit the 2425 \/ 2425 LED Large ETDRS® Illuminator Cabinets. Charts 1, 2, and 3 are sequenced alternate-form charts. Use in rotation to eliminate learning effects across repeat visits.\u003c\/p\u003e","brand":"ETDRS®, Precision Vision","offers":[{"title":"Chart 1 \/ 2 m \/ 6.5 ft","offer_id":45921499447457,"sku":"2138","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 1 \/ 2.5 m \/ 8.3 ft","offer_id":45921499480225,"sku":"2144","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 1 \/ 3 m \/ 10 ft","offer_id":45921499512993,"sku":"2173","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 1 \/ 4 m \/ 13 ft","offer_id":45921499545761,"sku":"2110","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 2 \/ 2 m \/ 6.5 ft","offer_id":46444056740001,"sku":"2139","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 3 \/ 2 m \/ 6.5 ft","offer_id":46444056772769,"sku":"2140","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 2 \/ 2.5 m \/ 8.3 ft","offer_id":46444056838305,"sku":"2145","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 3 \/ 2.5 m \/ 8.3 ft","offer_id":46444056871073,"sku":"2146","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 2 \/ 3 m \/ 10 ft","offer_id":46444056936609,"sku":"2174","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 3 \/ 3 m \/ 10 ft","offer_id":46444056969377,"sku":"2175","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 2 \/ 4 m \/ 13 ft","offer_id":46444057034913,"sku":"2111","price":69.75,"currency_code":"USD","in_stock":true},{"title":"Chart 3 \/ 4 m \/ 13 ft","offer_id":46444057067681,"sku":"2112","price":69.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/2110_HiRes-1.png?v=1776157190","url":"https:\/\/precision-vision.com\/products\/original-series-sloan-letter-etdrs","provider":"Precision Vision","version":"1.0","type":"link"}