{"id":29308,"date":"2025-11-20T10:52:01","date_gmt":"2025-11-20T10:52:01","guid":{"rendered":"https:\/\/www.oculus.de\/en\/?post_type=avada_faq&#038;p=29308"},"modified":"2025-11-20T10:52:01","modified_gmt":"2025-11-20T10:52:01","slug":"does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement","status":"publish","type":"avada_faq","link":"https:\/\/www.oculus.de\/en\/faq-items\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\/","title":{"rendered":"Does abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement?"},"content":{"rendered":"<p>No, the software detects a basic image. In the case of keratoconus for example the strained Placido rings induced by the condition is noted initially by software and distortions from the original image is recorded and indicated as a break in the tear film. However, in cases with advanced keratoconus or severe irregular corneal astigmatism, it is hard to perform the measurement.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>No, the software detects a basic image. In the case of keratoconus for example the strained Placido rings induced by the condition is noted initially by software and distortions from the original image is recorded and indicated as a break   &#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":[362],"class_list":["post-29308","avada_faq","type-avada_faq","status-publish","format-standard","hentry","faq_category-dry-eye-examination"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Does abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement? - 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 abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement? - OCULUS INT\" \/>\n<meta property=\"og:description\" content=\"No, the software detects a basic image. In the case of keratoconus for example the strained Placido rings induced by the condition is noted initially by software and distortions from the original image is recorded and indicated as a break  ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.oculus.de\/en\/faq-items\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\/\" \/>\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-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\\\/\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\\\/\",\"name\":\"Does abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement? - OCULUS INT\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#website\"},\"datePublished\":\"2025-11-20T10:52:01+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/does-abnormal-corneal-shape-i-e-keratoconus-affect-the-nikbut-measurement\\\/#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 abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement?\"}]},{\"@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 abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement? - OCULUS INT","robots":{"index":"noindex","follow":"follow"},"og_locale":"en_GB","og_type":"article","og_title":"Does abnormal corneal shape i.e. keratoconus affect the NIKBUT measurement? - OCULUS INT","og_description":"No, the software detects a basic image. 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