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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ophthalmology Reports</journal-id><journal-title-group><journal-title xml:lang="en">Ophthalmology Reports</journal-title><trans-title-group xml:lang="ru"><trans-title>Офтальмологические ведомости</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1998-7102</issn><issn publication-format="electronic">2412-5423</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">165316</article-id><article-id pub-id-type="doi">10.17816/OV165316</article-id><article-id pub-id-type="edn">RCCNPO</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Algorithm for choosing a surgical technique for upper lid ptosis</article-title><trans-title-group xml:lang="ru"><trans-title>Алгоритм выбора метода хирургического лечения птоза верхнего века</trans-title></trans-title-group><trans-title-group xml:lang="zh"><trans-title/></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5449-4980</contrib-id><contrib-id contrib-id-type="spin">1797-9875</contrib-id><name-alternatives><name xml:lang="en"><surname>Filatova</surname><given-names>Irina A.</given-names></name><name xml:lang="ru"><surname>Филатова</surname><given-names>Ирина Анатольевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Dr. Sci. (Medicine), Professor</p></bio><bio xml:lang="ru"><p>д-р мед. наук, профессор</p></bio><email>filatova13@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2848-0686</contrib-id><contrib-id contrib-id-type="spin">1413-2930</contrib-id><name-alternatives><name xml:lang="en"><surname>Kondratieva</surname><given-names>Yuliya P.</given-names></name><name xml:lang="ru"><surname>Кондратьева</surname><given-names>Юлия Петровна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>oftal-julia@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4608-5754</contrib-id><contrib-id contrib-id-type="spin">4397-4425</contrib-id><name-alternatives><name xml:lang="en"><surname>Shemetov</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Шеметов</surname><given-names>Сергей Александрович</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>sergeyshemetov87@gmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0770-4882</contrib-id><contrib-id contrib-id-type="spin">7585-6246</contrib-id><name-alternatives><name xml:lang="en"><surname>Trefilova</surname><given-names>Marina S.</given-names></name><name xml:lang="ru"><surname>Трефилова</surname><given-names>Марина Сергеевна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Cand. Sci. (Medicine)</p></bio><bio xml:lang="ru"><p>канд. мед. наук</p></bio><email>gomfozis@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0001-1576-3137</contrib-id><contrib-id contrib-id-type="spin">3471-8505</contrib-id><name-alternatives><name xml:lang="en"><surname>Gromova</surname><given-names>Olga S.</given-names></name><name xml:lang="ru"><surname>Громова</surname><given-names>Ольга Станиславовна</given-names></name><name xml:lang="zh"><surname></surname><given-names></given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>okodoc92@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Helmholtz National Medical Research Center of Eye Diseases</institution></aff><aff><institution xml:lang="ru">Национальный медицинский исследовательский центр глазных болезней им. Гельмгольца</institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-10-28" publication-format="electronic"><day>28</day><month>10</month><year>2025</year></pub-date><volume>18</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><issue-title xml:lang="zh"/><fpage>17</fpage><lpage>23</lpage><history><date date-type="received" iso-8601-date="2023-01-31"><day>31</day><month>01</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2025-04-30"><day>30</day><month>04</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-statement xml:lang="zh">Copyright ©; 2025,</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/ov/article/view/165316">https://journals.eco-vector.com/ov/article/view/165316</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:<italic> </italic></bold>Selection of a surgical technique to treat blepharoptosis is currently based on traditional examination methods, which do not provide comprehensive understanding of functional changes in the upper lid levator associated with ptosis of various types. The percentage of under- and overcorrection remains high because of incorrect preoperative calculations and complications. A comprehensive functional assessment of the upper lid levator and assessment of contractility and fatigability are required, followed by calculation of a motion index.</p> <p><bold>AIM:</bold> Evaluation of the effectiveness of the developed algorithm an algorithm for choosing a surgical technique to treat upper lid ptosis based on dynamic measurement data.</p> <p><bold>METHODS:</bold> From 2020 to 2022, 100 patients with upper lid ptosis were examined. Dynamic measurements were performed in addition to a standard ophthalmological examination, and the motion index was calculated, defined as the ratio of levator contractility to its fatigability.</p> <p><bold>RESULTS:</bold> We have developed a method to determine the motion index and proposed to use it in patients with moderate to severe upper lid ptosis. The treatment strategy was determined based on the motion index according to the developed algorithm as follows: levator aponeurosis advancement procedure is recommended if the motion index is 0.25 or less; levator resection is required with the motion index of 0.26–0.28; for 0.29–0.65 and 0.66 or more, upper lid levator disinsertion and suspension surgery are performed, respectively. This approach provides an adequate functional and good cosmetic effect and reduces the risk of over- or undercorrection in clinical practice.</p> <p><bold>CONCLUSION:</bold> The algorithm for choosing a surgical technique to treat upper lid ptosis has been proposed based on the examination results, including dynamic measurements of the upper lid levator function (contractility and fatigability) and subsequent calculation of the motion index (the ratio of levator’s contractility to its fatigability).</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.<italic> </italic></bold>Выбор тактики хирургического лечения блефароптоза в настоящее время основано на традиционных методах исследования, что не даёт полную картину функциональных изменений в леваторе верхнего века при различных видах птоза. До сих пор остаётся высоким процент гипо- или гиперэффекта вследствие неправильных предоперационных расчётов и осложнений. Необходима всесторонняя функциональная оценка леватора верхнего века, оценка сократительной способности и утомляемости, с последующим расчётом динамометрического индекса.</p> <p><bold>Цель исследования. </bold>Оценка эффективности разработанного алгоритма выбора метода хирургического лечения птоза верхнего века согласно динамометрическим данным.</p> <p><bold>Методы.</bold> За период с 2020 г. по 2022 г. было обследовано 100 пациентов с птозом верхнего века, которым помимо стандартного офтальмологического обследования было дополнительно проведено динамометрическое исследование с расчётом динамометрического индекса как отношения сократительной способности леватора к его утомляемости.</p> <p><bold>Результаты.</bold> Нами был разработан и предложен к применению в практической офтальмологии среди пациентов, страдающих птозом верхнего века средней и тяжёлой степени тяжести, метод, связанный с определением динамометрического индекса. В соответствии с величиной динамометрического индекса определяли дальнейшую тактику ведения пациента по разработанному алгоритму: при 0,25 и менее — целесообразно выполнение пластики апоневроза леватора, при 0,26–0,28 — необходима резекция леватора, при 0,29–0,65 — обратная дубликатура леватора верхнего века, при 0,66 и более — операция подвешивающего типа. Применение такого способа в клинической практике позволяет достичь адекватного функционального и хорошего косметического эффекта со снижением вероятности гипер- или гипокоррекции.</p> <p><bold>Заключение.</bold> На основании выполненной работы, включающей динамометрическое исследование леватора верхнего века (сократительной способности и утомляемости) с последующим расчётом динамометрического индекса (отношение сократительной способности леватора к его утомляемости), предложен алгоритм выбора метода хирургического лечения птоза верхнего века.</p></trans-abstract><trans-abstract xml:lang="zh"><p/></trans-abstract><kwd-group xml:lang="en"><kwd>blepharoptosis</kwd><kwd>upper lid levator</kwd><kwd>dynamic measurements</kwd><kwd>motion index</kwd><kwd>algorithm for choosing a surgical technique</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>блефароптоз</kwd><kwd>леватор верхнего века</kwd><kwd>динамометрия</kwd><kwd>динамометрический индекс</kwd><kwd>алгоритм выбора метода операции</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Kim MH, Cho J, Zhao D, et al. 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