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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">goslasmed</journal-id><journal-title-group><journal-title xml:lang="ru">Лазерная медицина</journal-title><trans-title-group xml:lang="en"><trans-title>Laser Medicine</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2071-8004</issn><issn pub-type="epub">2686-8644</issn><publisher><publisher-name>Skobelkin Centre for Laser Medicine - a branch of the Federal Clinical Center for High Medical Technologies, FMBA of Russia</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.37895/2071-8004-2023-27-2-22-31</article-id><article-id custom-type="elpub" pub-id-type="custom">goslasmed-831</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL RESEARCHES</subject></subj-group></article-categories><title-group><article-title>Определение режимов безопасного применения селективной микроимпульсной индивидуальной ретинальной терапии макулярной зоны с помощью моделирования на основе теории активированного комплекса</article-title><trans-title-group xml:lang="en"><trans-title>Determination of modes for safe application of selective micro-pulse individual retinal therapy of the macular zone using the modeling based on the theory of activated complex</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9044-3400</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Владимировна Иванова, кандидат медицинских наук, врач-офтальмолог</p><p>отделение лазерной хирургии сетчатки</p><p>Москва</p></bio><bio xml:lang="en"><p>Elena Ivanova, MD, Cand. Sci. (Med.), ophthalmologist</p><p>department of laser retinal surgery</p><p>Moscow</p></bio><email xlink:type="simple">elena-mntk@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1460-9960</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Володин</surname><given-names>П. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Volodin</surname><given-names>P. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Павел Львович Володин, доктор медицинских наук, заведующий отделом</p><p>отдел лазерной хирургии сетчатки</p><p>Москва</p></bio><bio xml:lang="en"><p>Pavel Volodin, MD, Dr. Sci. (Med.), head of the department</p><p>department of laser retinal surgery</p><p>Moscow</p></bio><email xlink:type="simple">volodinpl@mntk.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">ФГАУ «НМИЦ МНТК “Микрохирургия глаза” им. акад. С.Н. Федорова» Минздрава России<country>Россия</country></aff><aff xml:lang="en">S. Fyodorov Eye Microsurgery Federal State Institution<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>02</day><month>11</month><year>2023</year></pub-date><volume>27</volume><issue>2</issue><fpage>22</fpage><lpage>31</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванова Е.В., Володин П.Л., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Иванова Е.В., Володин П.Л.</copyright-holder><copyright-holder xml:lang="en">Ivanova E.V., Volodin P.L.</copyright-holder><license license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://goslasmed.elpub.ru/jour/article/view/831">https://goslasmed.elpub.ru/jour/article/view/831</self-uri><abstract><sec><title>   Цель</title><p>   Цель: провести моделирование различных режимов лазерного излучения, оценить степень повреждения ретинального пигментного эпителия и прилежащих структур и определить режимы и условия безопасности селективной микроимпульсной индивидуальной ретинальной терапии на основе теории активированного комплекса.</p></sec><sec><title>   Материалы и методы</title><p>   Материалы и методы. Моделирование степени повреждения хориоретинального комплекса и прилежащих структур проводили на основе теории активированного комплекса с помощью уравнения Эйринга. Для определения качества режима и условий безопасности применяли следующие определения. Микроимпульсный режим – режим с фиксированными значениями длительности микроимпульса, рабочего цикла и количеством импульсов в пакете, мощность – изменяемый параметр. Эффективность – отношение количества денатурированного белка внутри слоя ретинального пигментного эпителия к общему количеству белка в нем. Селективность – отношение количества денатурированного белка внутри слоя ретинального пигментного эпителия к общему количеству денатурированного белка. Относительная вредность – отношение объема денатурированного белка за пределами ретинального пигментного эпителия к объему белка в нем.</p><p>   Результаты и обсуждение. Определено качество микроимпульсного режима в зависимости от значения селективности при эффективности, равной 90 %. При значении эффективности менее 50 % режим является неселективным, более 67 % – селективным. Установлены условия безопасности применения селективных микроимпульсных режимов с учетом сохранности нейросенсорной сетчатки и хориоидеи по показателю относительной вредности, который не должен превышать единицы. Определены параметры, при которых микроимпульсные режимы обладают высокими значениями (более 90–99) эффективности и селективности одновременно. Для этого требуется режим единичного импульса, длительность микроимпульса от 25 мкс и мощность от 6 до 8 Вт. Для расширения комбинации параметров необходима возможность их свободного изменения с шагом в 1 импульс, 5 мкс, 100 мВт, с продолжительным интервалом и коротким рабочим циклом. Эти технические возможности могут быть реализованы и внедрены в клиническую практику производителями лазерных аппаратов.</p></sec><sec><title>   Заключение</title><p>   Заключение. Для селективной микроимпульсной индивидуальной ретинальной терапии макулярной зоны на существующих лазерах могут применяться микроимпульсные режимы с длительностью импульса не более 200 мкс, коротким рабочим циклом менее 5 % и количеством импульсов в пакете не более 5, относительной вредностью менее единицы, с подбором мощности излучения, учитывающей персональные особенности пациента.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>   Purpose</title><p>   Purpose: to make modeling of various modes of laser radiation, to assess the degree of damage to the retinal pigment epithelium and adjacent structures, and to determine modes and safety conditions of selective micro-pulse individual retinal therapy based on the theory of activated complex.</p></sec><sec><title>   Materials and methods</title><p>   Materials and methods. The authors have modeled the degree of damage to the chorioretinal complex and adjacent structures using the activated complex theory with the Eyring equation. The following definitions were used to determine the regime quality and safety conditions: micro-pulse mode is a mode with fixed values of micro-pulse duration, duty cycle and the number of pulses in the packet; power is a variable parameter. Efficiency is the ratio of the amount of denatured protein inside the retinal pigment epithelium layer to the total amount of protein in it. Selectivity is the ratio of the amount of denatured protein inside the retinal pigment epithelium layer to the total amount of denatured protein. Relative harmfulness is the ratio of denatured protein volume outside the retinal pigment epithelium to the volume of protein in it.</p><p>   Results and discussion. The quality of micro-pulse mode was found as depending on the selectivity value with efficiency equal to 90 %. With the efficiency value less than 50 %, the mode is non-selective, with more than 67 % – selective. Safety conditions for selective micro-pulse modes have been established, taking into account safety of the neurosensory retina and choroid in terms of relative harmfulness which should not exceed 1. Parameters at which micro-pulse modes have high values (more than 90 – 99) of efficiency and selectivity at the same time have been determined as well. It requires single pulse mode, micro pulse duration of 25 microseconds and power from 6 to 8 W. To expand the combination of parameters, it is necessary to be able to freely change them in increments of 1 pulse, 5 microseconds, 100 mW, with long interval and short duty cycle. These technical capabilities can be realized and implemented into clinical practice by manufacturers of laser devices.</p></sec><sec><title>   Conclusion</title><p>   Conclusion. For selective micro-pulse individual retinal therapy of the macular zone with existing lasers, the following recommendation are to be observed: micro-pulse modes with pulse duration no more than 200 microseconds, short duty cycle less than 5 % and number of pulses in an envelope no more than 5; relative harmfulness less than one, radiation power selection, personalized patient’s characteristics.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>селективная микроимпульсная индивидуальная ретинальная терапия</kwd><kwd>моделирование</kwd><kwd>режим применения</kwd><kwd>безопасность</kwd><kwd>эффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>selective micro-pulse individual retinal therapy</kwd><kwd>modeling</kwd><kwd>mode of application</kwd><kwd>safety</kwd><kwd>efficacy</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Желтов Г.И. 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