{"id":464784,"date":"2024-10-20T10:36:54","date_gmt":"2024-10-20T10:36:54","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-85962018a12020\/"},"modified":"2024-10-26T19:34:17","modified_gmt":"2024-10-26T19:34:17","slug":"bs-en-iso-85962018a12020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-85962018a12020\/","title":{"rendered":"BS EN ISO 8596:2018+A1:2020"},"content":{"rendered":"

This document specifies a range of Landolt ring optotypes and describes a method for measuring distance visual acuity under photopic conditions for the purposes of certification or licensing.<\/p>\n

This document is neither intended as a standard for clinical measurements nor for the certification of blindness or partial sight.<\/p>\n

Other optotypes used for clinical investigations are described in Annex A for information.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
4<\/td>\nEuropean foreword <\/td>\n<\/tr>\n
5<\/td>\nForeword to amendment A1
Foreword to amendment A1 <\/td>\n<\/tr>\n
7<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Requirements
4.1 Specifications of the standard optotype <\/td>\n<\/tr>\n
11<\/td>\n4.2 Visual acuity grades and standard optotype grades <\/td>\n<\/tr>\n
12<\/td>\n4.3 Test area and spacing between standard optotypes
4.4 Positions of the optotype
4.5 Quality of presentation <\/td>\n<\/tr>\n
13<\/td>\n4.6 Luminance <\/td>\n<\/tr>\n
14<\/td>\n5 Test methods
5.1 Viewing distance for distance visual acuity testing
5.2 Criteria for determination and assignment of visual acuity grade
6 Test report <\/td>\n<\/tr>\n
15<\/td>\nAnnex A (informative) Optotypes for clinical investigations <\/td>\n<\/tr>\n
18<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Ophthalmic optics. Visual acuity testing. Standard and clinical optotypes and their presentation<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":464795,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[145,2641],"product_tag":[],"class_list":{"0":"post-464784","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-11-040-70","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/464784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/464795"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=464784"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=464784"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=464784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}