{"id":29390,"date":"2025-11-20T13:28:22","date_gmt":"2025-11-20T13:28:22","guid":{"rendered":"https:\/\/www.oculus.de\/en\/?post_type=avada_faq&#038;p=29390"},"modified":"2025-11-20T13:28:22","modified_gmt":"2025-11-20T13:28:22","slug":"what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values","status":"publish","type":"avada_faq","link":"https:\/\/www.oculus.de\/en\/faq-items\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\/","title":{"rendered":"What are the differences between the references in the Power Distribution display to calculate K values?"},"content":{"rendered":"<p>Automated keratometry generates K values on the 3 mm ring centred on the pupil centre. The Pentacam\u00ae gives the clinician the option to have K values calculated for different maps using either the pupil centre or the apex as the centre. Once the option for the centre reference has been chosen, the area to be calculated can be chosen either as a ring around the centre, or in a zone (average of measurements in the area in the ring).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Automated keratometry generates K values on the 3 mm ring centred on the pupil centre. The Pentacam\u00ae gives the clinician the option to have K values calculated for different maps using either the pupil centre or the apex as the   &#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":[364,367],"class_list":["post-29390","avada_faq","type-avada_faq","status-publish","format-standard","hentry","faq_category-pentacam-for-all","faq_category-power-calculation"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What are the differences between the references in the Power Distribution display to calculate K values? - 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=\"What are the differences between the references in the Power Distribution display to calculate K values? - OCULUS INT\" \/>\n<meta property=\"og:description\" content=\"Automated keratometry generates K values on the 3 mm ring centred on the pupil centre. The Pentacam\u00ae gives the clinician the option to have K values calculated for different maps using either the pupil centre or the apex as the  ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.oculus.de\/en\/faq-items\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\/\" \/>\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\\\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\\\/\",\"url\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\\\/\",\"name\":\"What are the differences between the references in the Power Distribution display to calculate K values? - OCULUS INT\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/#website\"},\"datePublished\":\"2025-11-20T13:28:22+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.oculus.de\\\/en\\\/faq-items\\\/what-are-the-differences-between-the-references-in-the-power-distribution-display-to-calculate-k-values\\\/#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\":\"What are the differences between the references in the Power Distribution display to calculate K values?\"}]},{\"@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":"What are the differences between the references in the Power Distribution display to calculate K values? - OCULUS INT","robots":{"index":"noindex","follow":"follow"},"og_locale":"en_GB","og_type":"article","og_title":"What are the differences between the references in the Power Distribution display to calculate K values? - OCULUS INT","og_description":"Automated keratometry generates K values on the 3 mm ring centred on the pupil centre. 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