{"title":"sv  2.5M CHARTS","description":"","products":[{"product_id":"logmar-2-5m-etdrs-chart-1-revised","title":"Logmar 2.5m ETDRS Chart 1 Revised","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart 1 Revised\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese revised charts incorporate a slight change in the difficulty score for each of the ten Sloan letters derived from the best visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per line, the three charts are balanced so that in each\u003cbr\u003e\nchart the ten letters are represented\u003cspan lang=\"en-gb\"\u003e \u003c\/span\u003eat least once in every position.\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763304279,"sku":"SV-SDT-214-1","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-1.jpg?v=1781603756"},{"product_id":"logmar-2-5m-etdrs-chart-2-revised","title":"Logmar 2.5m ETDRS Chart 2 Revised","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart 2 Revised\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese revised charts incorporate a slight change in the difficulty score for each of the ten Sloan letters derived from the best visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per line, the three charts are balanced so that in each\u003cbr\u003e\nchart the ten letters are represented\u003cspan lang=\"en-gb\"\u003e \u003c\/span\u003eat least once in every position.\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763337047,"sku":"SV-SDT-214-2","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-2.jpg?v=1781603756"},{"product_id":"logmar-2-5m-etdrs-chart-3-revised","title":"Logmar 2.5m ETDRS Chart 3 Revised","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart 3 Revised\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese revised charts incorporate a slight change in the difficulty score for each of the ten Sloan letters derived from the best visual acuity examinations of 7420 eyes during the ETDRS study. The original charts difficulty scores were derived from the examination of 234 eyes. In addition to the revised arrangement of letters which resulted in the ultimate homogeneity of difficulty per line, the three charts are balanced so that in each\u003cbr\u003e\nchart the ten letters are represented\u003cspan lang=\"en-gb\"\u003e \u003c\/span\u003eat least once in every position.\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763369815,"sku":"SV-SDT-214-3","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-3.jpg?v=1781603754"},{"product_id":"logmar-2-5m-etdrs-chart-r-original","title":"Logmar 2.5m ETDRS Chart R Original","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\nLogmar 2.5m ETDRS Chart R Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\nGlossary of terms:\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=20%%-\"\u003e\u003cb\u003eWhat does ETDRS mean?\u003c\/b\u003e - Click for more info\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"%%+info_pages.php?pages_id=17%%-\"\u003e\u003cb\u003eLogmar Definition \u0026amp; Protocol\u003c\/b\u003e - Click for more info\u003c\/a\u003e\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763402583,"sku":"SV-SDT-214-4","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-4.jpg?v=1781603755"},{"product_id":"logmar-2-5m-etdrs-chart-1-original","title":"Logmar 2.5m ETDRS Chart 1 Original","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart 1 Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763435351,"sku":"SV-SDT-214-5","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-5.jpg?v=1781603754"},{"product_id":"logmar-2-5m-etdrs-chart-2-original","title":"Logmar 2.5m ETDRS Chart 2 Original","description":"\u003cdiv class=\"ewa-rteLine\"\u003eLogmar 2.5m ETDRS Chart 2 Original\n\n2.5 metre viewing.\n Acuity range 25.2m to 1.2M.\n\nWill fit illuminated cabinets \u003ca href=\"%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\"\u003eSDT-392-LSV\u003c\/a\u003e and \u003ca href=\"%%+precision-vision-logmar-cabinet-p-5544.html%%-\"\u003eSDT-396-LPV\u003c\/a\u003e\n\nThese Original Charts - Are the only standardised format acceptable in studies sponsored by the American National Eye Institute. They were designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required. The lines are of equal difficulty and geometrical Progressions, in letter size, from line to line.\u003cbr\u003e\n\u003cb\u003eRevised Charts are now also available.\u003c\/b\u003e\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796763500887,"sku":"SV-SDT-214-6","price":195.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-214-6.jpg?v=1781603758"},{"product_id":"patti-pics-2-5m-100","title":"Patti Pics 2.5m 100%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m 100%\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan style=\"font-family: Arial, Helvetica, sans-serif;\"\u003eWill fit illuminated cabinets\n\u003c\/span\u003e\u003ca href=\"https:\/\/www.sussex-vision.co.uk\/%%+logmar-chart-slim-cabinet-sussex-p-5539.html%%-\" style=\"margin: 0px; padding: 0px; color: rgb(51, 51, 51); text-decoration-line: none; cursor: pointer; font-family: Arial, Helvetica, sans-serif;\"\u003eSDT-392-LSV\u003c\/a\u003e\u003cspan style=\"font-family: Arial, Helvetica, sans-serif;\"\u003e\nand\n\u003c\/span\u003e\u003ca href=\"https:\/\/www.sussex-vision.co.uk\/%%+precision-vision-logmar-cabinet-p-5544.html%%-\" style=\"margin: 0px; padding: 0px; color: rgb(51, 51, 51); text-decoration-line: none; cursor: pointer; font-family: Arial, Helvetica, sans-serif;\"\u003eSDT-396-LPV\u003c\/a\u003e\n\n\n\n\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796764483927,"sku":"SV-SDT-255-6","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-255-6.jpg?v=1781603756"},{"product_id":"patti-pics-2-5m-contrast-sensitivity-1-25","title":"Patti Pics 2.5m Contrast Sensitivity 1.25%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m Contrast Sensitivity 1.25% For viewing at 2.5 Meters (8.3ft)\n\n\n\n\u003cspan style=\"font-size: 13px;\"\u003eTo be used with either of the following Light Cabinets: \nSDT-392-LSV or SDT-396-LPV\u003c\/span\u003e\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796765106519,"sku":"SV-SDT-257-0","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-257-0.jpg?v=1781603753"},{"product_id":"patti-pics-2-5m-contrast-sensitivity-2-5","title":"Patti Pics 2.5m Contrast Sensitivity 2.5%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m Contrast Sensitivity 2.5% \nFor viewing at 2.5 Meters (8.3ft) \n\n\nTo be uesd with either of the following Light Cabinets: \nSDT-392-LSV or SDT-396-LPV \n\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796765139287,"sku":"SV-SDT-257-1","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-257-1.jpg?v=1781603755"},{"product_id":"patti-pics-2-5m-contrast-sensitivity-5","title":"Patti Pics 2.5m Contrast Sensitivity 5%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m Contrast Sensitivity 5% \nFor viewing at 2.5 Meters (8.3ft)\n\n\n\n\u003cspan style=\"font-size: 13px;\"\u003eTo be used with either of the following Light Cabinets: \nSDT-392-LSV or SDT-396-LPV\u003c\/span\u003e\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796765172055,"sku":"SV-SDT-257-2","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-257-2.jpg?v=1781603754"},{"product_id":"patti-pics-2-5m-contrast-sensitivity-10","title":"Patti Pics 2.5m Contrast Sensitivity 10%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m Contrast Sensitivity 10%\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan style=\"font-family: Arial, Helvetica, sans-serif;\"\u003eTo be used with either of the following Light Cabinets: \nSDT-392-LSV or SDT-396-LPV\u003c\/span\u003e\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796765204823,"sku":"SV-SDT-257-3","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-257-3.jpg?v=1781603754"},{"product_id":"patti-pics-2-5m-contrast-sensitivity-25","title":"Patti Pics 2.5m Contrast Sensitivity 25%","description":"\u003cdiv class=\"ewa-rteLine\"\u003ePatti Pics 2.5m Contrast Sensitivity 25% \nFor viewing at 2.5 Meters (8.3ft)\n \n\n\n\u003cspan style=\"font-size: 13px;\"\u003eTo be used with either of the following Light Cabinets: \nSDT-392-LSV or SDT-396-LPV\u003c\/span\u003e\n\n\u003cbr\u003e\n\u003cbr\u003e\n\n\n\u003c\/div\u003e","brand":"SV","offers":[{"title":"Default Title","offer_id":53796765237591,"sku":"SV-SDT-257-4","price":227.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/4360\/8663\/files\/SDT-257-4.jpg?v=1781603755"}],"url":"https:\/\/esp-sv.myshopify.com\/collections\/sv-2-5m-charts.oembed","provider":"ESP\/SV","version":"1.0","type":"link"}