{"id":29477,"date":"2025-11-21T12:34:10","date_gmt":"2025-11-21T12:34:10","guid":{"rendered":"https:\/\/www.oculus.de\/en\/?post_type=avada_faq&#038;p=29477"},"modified":"2025-11-21T12:34:10","modified_gmt":"2025-11-21T12:34:10","slug":"does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements","status":"publish","type":"avada_faq","link":"https:\/\/www.oculus.de\/en\/faq-items\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\/","title":{"rendered":"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements?"},"content":{"rendered":"<p>Traditional non-contact tonometers are tear film dependent as the measurement procedure is based on reflection technology. Corvis\u00ae ST incorporates Scheimpflug photography during its measurement procedure and is therefore not dependent on tear film, fixation or decentred apex. Even highly irregular corneas can have accurate measurements obtained.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Traditional non-contact tonometers are tear film dependent as the measurement procedure is based on reflection technology. Corvis\u00ae ST incorporates Scheimpflug photography during its measurement procedure and is therefore not dependent on tear film, fixation or decentred apex. Even highly irregular   &#8230;<\/p>\n","protected":false},"author":55,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"faq_category":[374],"class_list":["post-29477","avada_faq","type-avada_faq","status-publish","format-standard","hentry","faq_category-corvis-st"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements? - OCULUS INT<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements? - OCULUS INT\" \/>\n<meta property=\"og:description\" content=\"Traditional non-contact tonometers are tear film dependent as the measurement procedure is based on reflection technology. Corvis\u00ae ST incorporates Scheimpflug photography during its measurement procedure and is therefore not dependent on tear film, fixation or decentred apex. Even highly irregular  ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.oculus.de\/en\/faq-items\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\/\" \/>\n<meta property=\"og:site_name\" content=\"OCULUS INT\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/OCULUSinternational\/\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.oculus.de\/en\/wp-content\/uploads\/sites\/12\/2021\/01\/oculus-1024x193-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"193\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@OCULUSofficial\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\\\/\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\\\/\",\"name\":\"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements? - OCULUS INT\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#website\"},\"datePublished\":\"2025-11-21T12:34:10+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-tear-film-fixation-or-decentred-apex-affect-corvis-st-measurements\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"FAQs\",\"item\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#website\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/\",\"name\":\"OCULUS Germany\",\"description\":\"OCULUS Germany\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#organization\"},\"alternateName\":\"OCULUS Germany\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#organization\",\"name\":\"OCULUS Germany\",\"alternateName\":\"OCULUS Optikger\u00e4te GmbH\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/12\\\/2021\\\/01\\\/oculus-1024x193-1.png\",\"contentUrl\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/wp-content\\\/uploads\\\/sites\\\/12\\\/2021\\\/01\\\/oculus-1024x193-1.png\",\"width\":1024,\"height\":193,\"caption\":\"OCULUS Germany\"},\"image\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/OCULUSinternational\\\/\",\"https:\\\/\\\/x.com\\\/OCULUSofficial\",\"https:\\\/\\\/www.instagram.com\\\/oculusinternational\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/oculus-optikgeraete-gmbh-int\\\/\",\"https:\\\/\\\/www.youtube.com\\\/user\\\/OculusGermany\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements? - OCULUS INT","robots":{"index":"noindex","follow":"follow"},"og_locale":"en_GB","og_type":"article","og_title":"Does tear film, fixation or decentred apex affect Corvis\u00ae ST measurements? - OCULUS INT","og_description":"Traditional non-contact tonometers are tear film dependent as the measurement procedure is based on reflection technology. 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