{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9704411","patent":{"patent_number":"US-9704411","title":"Method and apparatus for determining reading acuity with automated calibration","assignee":null,"inventors":[],"filing_date":"2013-07-31T00:00:00.000Z","publication_date":"2017-07-11T00:00:00.000Z","cpc_codes":["G09B","A61B","A61B"],"num_claims":9,"abstract":"A method and apparatus for calculating a log MAR value for a reading acuity test, including the steps of displaying words on a first computer monitor, where the words will be read aloud by a person taking the test; displaying the words on a second computer monitor, where words will be observable by a person administering the test, where the administrator can select words which are incorrectly read using a pointing device; measuring the amount of time the first person takes to read the words; calculating the reading rate based upon both the words correctly and those read incorrectly; measuring the distance between the first person and the monitor; and, calculating the log MAR value based upon the distance, the font size and the reading rate."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for determining reading acuity with automated calibration","description":"A method and apparatus for calculating a log MAR value for a reading acuity test, including the steps of displaying words on a first computer monitor, where the words will be read aloud by a person ta","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9704411","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9704411","citation_suggestion":"Patentable. \"Method and apparatus for determining reading acuity with automated calibration\" (US-9704411). https://patentable.app/patents/US-9704411","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9704411","json":"https://patentable.app/api/llm-context/US-9704411","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:15:05.977Z"}