{"id":17771,"date":"2026-05-13T02:24:30","date_gmt":"2026-05-13T02:24:30","guid":{"rendered":"https:\/\/ferrisoptical.com\/?post_type=product&#038;p=17771"},"modified":"2026-06-19T14:47:08","modified_gmt":"2026-06-19T14:47:08","slug":"tomey-oa-2000-optical-biometer-barrett-formula-al-4000-a-scan","status":"publish","type":"product","link":"https:\/\/ferrisoptical.com\/de\/product\/tomey-oa-2000-optical-biometer-barrett-formula-al-4000-a-scan\/","title":{"rendered":"TOMEY OA-2000 Optical Biometer + Barrett Formula &#038; AL-4000 A-Scan"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>The <strong>Tomey OA-2000<\/strong> is an advanced optical biometer featuring Fourier-domain axial length measurement, integrated corneal topography, and comprehensive IOL power calculation formulas. Designed for precise cataract surgery planning and anterior segment analysis.<\/p>\n<p>The\u00a0TOMEY OA-2000\u00a0Optical Biometer delivers fast, precise, and comprehensive refractive measurements by integrating topography, axial length, lens thickness, and pachymetry\u2014creating the ideal dataset for advanced ray tracing. This powerful combination ensures excellent IOL predictions, even in challenging eye conditions or toric IOL cases.<\/p>\n<p>With a single measurement, it captures biometry of the entire eye, including ACD, pupil diameter, and white-to-white distance. Designed for superior usability, the\u00a0OA-2000\u00a0offers outstanding optical results, perfect K values for optimal toric outcomes, and the advanced Hill-RBF method for exceptional post-refractive accuracy. Its open data system, intuitive interface, and quick access to full eye data ensure improved refractive outcomes and precise targeting\u2014every time.<\/p>\n<p><strong>TOMEY Ultrasound A Scan AL-4000<\/strong> measures the distance to living tissue using ultrasound waves generated by the transducer built into the measurement probe. This device is designed to measure axial length and corneal thickness in optical clinics and allows you to identify areas of pathological change by observing mode-A waveforms.<\/p>\n<p>&nbsp;<\/p>\n<div style=\"height: 0px; overflow: hidden; padding-top: 56.25%; position: relative; width: 100%;\"><iframe style=\"position: absolute; top: 0px; left: 0px; width: 100%; height: 100%;\" title=\"YouTube video player\" src=\"https:\/\/tube.rvere.com\/embed?v=wbwV4iFjbp8\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><br \/>\n<\/iframe><\/div>\n<p>&nbsp;<\/p>\n<div class=\"nta-woo-products-button\">\n<div class=\"nta_wa_button\" data-id=\"13876\" data-info=\"{&quot;name&quot;:&quot;OPTIMETRICS SALES, INC.&quot;,&quot;info&quot;:{&quot;number&quot;:&quot;+13055427556&quot;,&quot;title&quot;:&quot;&quot;,&quot;predefinedText&quot;:&quot;&quot;,&quot;willBeBackText&quot;:&quot;I will be back in [njwa_time_work]&quot;,&quot;dayOffsText&quot;:&quot;I will be back soon&quot;,&quot;isAlwaysAvailable&quot;:&quot;ON&quot;,&quot;daysOfWeekWorking&quot;:{&quot;sunday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;monday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;tuesday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;wednesday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;thursday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;friday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]},&quot;saturday&quot;:{&quot;isWorkingOnDay&quot;:&quot;OFF&quot;,&quot;workHours&quot;:[{&quot;startTime&quot;:&quot;08:00&quot;,&quot;endTime&quot;:&quot;17:30&quot;}]}}},&quot;styles&quot;:{&quot;type&quot;:&quot;round&quot;,&quot;backgroundColor&quot;:&quot;#2DB742&quot;,&quot;textColor&quot;:&quot;#fff&quot;,&quot;label&quot;:&quot;Looking for Equipment\\u00a0? 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Click one of our member below to chat on &lt;strong&gt;WhatsApp&lt;\\\/strong&gt;&quot;,&quot;backgroundColor&quot;:&quot;#2db742&quot;,&quot;textColor&quot;:&quot;#fff&quot;,&quot;scrollHeight&quot;:&quot;501&quot;,&quot;isShowScroll&quot;:&quot;OFF&quot;,&quot;isShowResponseText&quot;:&quot;OFF&quot;,&quot;isShowPoweredBy&quot;:&quot;OFF&quot;,&quot;btnLabel&quot;:&quot;Looking for Equipment\\u00a0? &lt;strong&gt;Chat with us&lt;\\\/strong&gt;&quot;,&quot;btnLabelWidth&quot;:&quot;157&quot;,&quot;btnPosition&quot;:&quot;left&quot;,&quot;btnLeftDistance&quot;:&quot;43&quot;,&quot;btnRightDistance&quot;:&quot;30&quot;,&quot;btnBottomDistance&quot;:&quot;30&quot;,&quot;isShowBtnLabel&quot;:&quot;ON&quot;,&quot;isShowGDPR&quot;:&quot;OFF&quot;,&quot;gdprContent&quot;:&quot;Please accept our &lt;a href=\\&quot;https:\\\/\\\/ninjateam.org\\\/privacy-policy\\\/\\&quot;&gt;privacy policy&lt;\\\/a&gt; first to start a conversation.&quot;,&quot;widgetType&quot;:&quot;expandable&quot;},&quot;analytics&quot;:{&quot;enabledGoogle&quot;:&quot;OFF&quot;,&quot;enabledFacebook&quot;:&quot;OFF&quot;,&quot;enabledGoogleGA4&quot;:&quot;OFF&quot;}},&quot;gdprStatus&quot;:false,&quot;defaultAvatar&quot;:&quot;https:\\\/\\\/optimetrics.com\\\/wp-content\\\/plugins\\\/whatsapp-for-wordpress\\\/assets\\\/img\\\/whatsapp_logo.svg&quot;}\">\n<div class=\"wa__cs_img\">\n<div class=\"wa__cs_img_wrap\">\n<div id=\"wd-5dee7cb568af3\" class=\"title-wrapper wd-wpb wd-set-mb reset-last-child wd-rs-5dee7cb568af3 wd-title-color-default wd-title-style-default text-left vc_custom_1575910587367 wd-underline-colored\">\n<div class=\"liner-continer\">\n<h2 class=\"woodmart-title-container title wd-font-weight-600 wd-fontsize-m\">Tomey OA-2000 Features<\/h2>\n<\/div>\n<\/div>\n<div class=\"vc_row wpb_row vc_inner vc_row-fluid vc_custom_1532346192176 vc_row-has-fill\">\n<div class=\"wpb_column vc_column_container vc_col-sm-6\">\n<div class=\"vc_column-inner vc_custom_1532346102929\">\n<div class=\"wpb_wrapper\">\n<ul id=\"wd-5e4c2d7b6767a\" class=\" wd-rs-5e4c2d7b6767a wd-list wd-wpb color-scheme- wd-fontsize-xs wd-type-icon wd-style-default text-left vc_custom_1582050690556\">\n<li><span class=\"wd-list-content list-content\">Post-refractive cases \u2013 quick and reliable<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Perfect K values \u2013 best toric results<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Hill-RBF-method- for excellent refraction outcome<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Outstanding optic measurement results<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Biometry of the entire eye in a single measurement<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Frontiers in IOL Prediction<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wpb_column vc_column_container vc_col-sm-6\">\n<div class=\"vc_column-inner vc_custom_1532346106600\">\n<div class=\"wpb_wrapper\">\n<ul id=\"wd-5e4d4646ba596\" class=\" wd-rs-5e4d4646ba596 wd-list wd-wpb color-scheme- wd-fontsize-xs wd-type-icon wd-style-default text-left vc_custom_1582122648628\">\n<li><span class=\"wd-list-content list-content\">Open data and an intuitive user interface<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Improved refractive outcomes<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Access to full eye data in a single click<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Hit the target any time<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Excellent IOL prediction in all eyes<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Fast, precise and comprehensive refractive results<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div id=\"wd-5dee7c2ea6bbb\" class=\"title-wrapper wd-wpb wd-set-mb reset-last-child wd-rs-5dee7c2ea6bbb wd-title-color-default wd-title-style-default text-left vc_custom_1575910463446 wd-underline-colored\">\n<div class=\"liner-continer\">\n<h3 class=\"woodmart-title-container title wd-font-weight-600 wd-fontsize-m\">Software<\/h3>\n<\/div>\n<\/div>\n<div class=\"vc_row wpb_row vc_inner vc_row-fluid vc_custom_1532346192176 vc_row-has-fill\">\n<div class=\"wpb_column vc_column_container vc_col-sm-6\">\n<div class=\"vc_column-inner vc_custom_1532346102929\">\n<div class=\"wpb_wrapper\">\n<ul id=\"wd-64232a61e9d6e\" class=\" wd-rs-64232a61e9d6e wd-list wd-wpb color-scheme- wd-fontsize-xs wd-type-icon wd-style-default text-left vc_custom_1680026275192\">\n<li><span class=\"wd-list-content list-content\">Biometer<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Topography-Keratometer<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Pachymeter<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">Pupillometer<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wpb_column vc_column_container vc_col-sm-6\">\n<div class=\"vc_column-inner vc_custom_1532346106600\">\n<div class=\"wpb_wrapper\">\n<ul id=\"wd-64232aac56ad0\" class=\" wd-rs-64232aac56ad0 wd-list wd-wpb color-scheme- wd-fontsize-xs wd-type-icon wd-style-default text-left vc_custom_1680026334171\">\n<li><span class=\"wd-list-content list-content\">Axial length<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">ACD &amp; LENS thickness<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">White to White<\/span><\/li>\n<li><span class=\"wd-list-content list-content\">IOL Ray Tracing Calculation by OKULIX (optional)<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wa__btn_txt\">\n<h3 data-start=\"732\" data-end=\"782\">Advanced Optical Biometry for Cataract Planning<\/h3>\n<p data-start=\"784\" data-end=\"1122\">The Tomey OA-2000 is a high-precision optical biometer that uses Fourier-domain axial length measurement technology to deliver accurate, reproducible results. Designed to support modern cataract surgery workflows, the system integrates axial length measurement, corneal curvature analysis, and topography into one compact diagnostic platform.<\/p>\n<p data-start=\"1124\" data-end=\"1281\">Its high-speed acquisition system automatically detects measurement points even when the crystalline lens is unclear, improving reliability in complex cases.<\/p>\n<p data-start=\"1283\" data-end=\"1308\">Key capabilities include:<\/p>\n<ul>\n<li data-start=\"1312\" data-end=\"1353\">Fourier-domain axial length measurement<\/li>\n<li data-start=\"1356\" data-end=\"1394\">Corneal curvature radius measurement<\/li>\n<li data-start=\"1397\" data-end=\"1459\">Integrated corneal topography (up to 5.5 mm corneal capture)<\/li>\n<li data-start=\"1462\" data-end=\"1500\">Axis support for toric IOL alignment<\/li>\n<li data-start=\"1503\" data-end=\"1530\">Internal database storage<\/li>\n<\/ul>\n<h3 data-start=\"1537\" data-end=\"1575\">Comprehensive IOL Power Calculation<\/h3>\n<p data-start=\"1577\" data-end=\"1824\">The OA-2000 includes multiple IOL power calculation formulas to support both standard and post-refractive-surgery cases. The system allows up to 15 lens registrations and provides a streamlined workflow from pre-operative evaluation to surgical planning.<\/p>\n<p data-start=\"1826\" data-end=\"1853\">Supported formulas include:<\/p>\n<ul>\n<li data-start=\"1857\" data-end=\"1865\">SRK-II<\/li>\n<li data-start=\"1868\" data-end=\"1875\">SRK-T<\/li>\n<li data-start=\"1878\" data-end=\"1888\">Holladay<\/li>\n<li data-start=\"1891\" data-end=\"1901\">Hoffer Q<\/li>\n<li data-start=\"1904\" data-end=\"1912\">Haigis<\/li>\n<li data-start=\"1915\" data-end=\"1941\">Haigis optimized formula<\/li>\n<li data-start=\"1944\" data-end=\"1969\">Haigis standard formula<\/li>\n<li data-start=\"1972\" data-end=\"1983\">SRK Showa<\/li>\n<li data-start=\"1986\" data-end=\"1998\">Shammas-PL<\/li>\n<li data-start=\"2001\" data-end=\"2017\">Double K SRK-T<\/li>\n<\/ul>\n<p data-start=\"2019\" data-end=\"2191\">The integrated one-shot IOL power calculation allows simultaneous processing of axial length, corneal curvature, corneal thickness, and anterior chamber depth measurements.<\/p>\n<p data-start=\"2019\" data-end=\"2191\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-17786\" src=\"https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface.jpg\" alt=\"TOMEY OA-2000 \" width=\"1366\" height=\"1366\" srcset=\"https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface.jpg 1366w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-550x550.jpg 550w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-100x100.jpg 100w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-1000x1000.jpg 1000w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-300x300.jpg 300w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-1024x1024.jpg 1024w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-150x150.jpg 150w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-768x768.jpg 768w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-480x480.jpg 480w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-46x46.jpg 46w, https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/oa-2000-interface-310x310.jpg 310w\" sizes=\"auto, (max-width: 1366px) 100vw, 1366px\" \/><\/p>\n<h2 data-start=\"2198\" data-end=\"2230\">Clinical Usability &amp; Workflow<\/h2>\n<p data-start=\"2232\" data-end=\"2462\">The OA-2000 features a 10.4-inch tilting monitor for ergonomic operation and intuitive touchscreen alignment. Automatic alignment modes enable easy initiation of measurements, while manual control via a joystick is available when needed.<\/p>\n<p data-start=\"2464\" data-end=\"2630\">For cases where optical measurement is limited (e.g., dense cataracts), the unit can be connected wirelessly to an ultrasonic axial length measurement unit (AL-4000).<\/p>\n<div class=\"table-responsive\">\n<table>\n<tbody>\n<tr>\n<th>Measurement<\/th>\n<th>Range<\/th>\n<\/tr>\n<tr>\n<td>Axial Length<\/td>\n<td>14 \u2013 40 mm<\/td>\n<\/tr>\n<tr>\n<td>Anterior Chamber Depth<\/td>\n<td>1.5 \u2013 7.0 mm<\/td>\n<\/tr>\n<tr>\n<td>Crystalline Lens Thickness<\/td>\n<td>0.5 \u2013 6.0 mm<\/td>\n<\/tr>\n<tr>\n<td>Corneal Thickness<\/td>\n<td>0.2 \u2013 1.2 mm<\/td>\n<\/tr>\n<tr>\n<td>Corneal Curvature Radius<\/td>\n<td>5.0 \u2013 11 mm<\/td>\n<\/tr>\n<tr>\n<td>Pupil Diameter<\/td>\n<td>1.5 \u2013 13 mm<\/td>\n<\/tr>\n<tr>\n<td>Corneal Diameter<\/td>\n<td>7 \u2013 16 mm<\/td>\n<\/tr>\n<tr>\n<th>Measurement Accuracy<\/th>\n<th>Value<\/th>\n<\/tr>\n<tr>\n<td>Axial Length<\/td>\n<td>\u00b10.03 mm<\/td>\n<\/tr>\n<tr>\n<td>Anterior Chamber Depth<\/td>\n<td>\u00b10.05 mm<\/td>\n<\/tr>\n<tr>\n<td>Crystalline Lens Thickness<\/td>\n<td>\u00b10.05 mm<\/td>\n<\/tr>\n<tr>\n<td>Corneal Thickness<\/td>\n<td>\u00b15 \u00b5m<\/td>\n<\/tr>\n<tr>\n<td>Corneal Curvature Radius<\/td>\n<td>\u00b10.02 mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Reference<\/h2>\n<ul>\n<li><a href=\"https:\/\/ferrisoptical.com\/wp-content\/uploads\/2026\/05\/OA-2000_brochure.pdf\">Brochure<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Das TOMEY OA-2000 optische Biometer mit Barrett-Formel + AL-4000 Ultraschall-A-Scan ist ein komplettes Paket f\u00fcr die Katarakt-Biometrie, das f\u00fcr Kliniken entwickelt wurde, die eine genaue IOL-Planung mit einer zuverl\u00e4ssigen Backup-Option f\u00fcr schwierige Augen suchen.<\/p>","protected":false},"featured_media":17775,"comment_status":"open","ping_status":"closed","template":"","meta":{"rs_blank_template":"","rs_page_bg_color":"","slide_template_v7":""},"product_brand":[],"product_cat":[132],"product_tag":[136,135],"class_list":["post-17771","product","type-product","status-publish","has-post-thumbnail","product_cat-biometer","product_tag-al-4000-a-scan","product_tag-tomey-oa-2000","ts_product_brand-tomey","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>TOMEY OA-2000 Optical Biometer + Barrett Formula &amp; AL-4000 A-Scan - FERRIS OPTICAL<\/title>\n<meta name=\"description\" content=\"TOMEY OA-2000 optical biometer with Barrett formula plus AL-4000 ultrasound A-scan for dense cataracts. 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