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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">morpho</journal-id><journal-title-group><journal-title xml:lang="ru">Морфологические ведомости</journal-title><trans-title-group xml:lang="en"><trans-title>Morphological newsletter</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1812-3171</issn><issn pub-type="epub">2686-8741</issn><publisher><publisher-name>Private Medical University REAVIZ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20340/mv-mn.2023.31(3).762</article-id><article-id custom-type="elpub" pub-id-type="custom">morpho-762</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>ДИСКУССИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>DISCUSSIONS</subject></subj-group></article-categories><title-group><article-title>СТРУКТУРА ПЕРЕДНЕГО ЭПИТЕЛИЯ РОГОВИЦЫ SUS SCROFA DOMESTICUS ПРИ КРИОФИКСАЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>THE STRUCTURE OF THE ANTERIOR CORNEA EPITHELIUM OF THE SUS SCROFA DOMESTICUS AT THE CRYOPHIXATION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6869-3112</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хомякова</surname><given-names>Наталья Васильевна</given-names></name><name name-style="western" xml:lang="en"><surname>Khomyakova</surname><given-names>Nataliya V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат медицинских наук, врач-офтальмолог </p></bio><bio xml:lang="en"><p>Candidate of Medical Sciences, Ophthalmologist</p></bio><email xlink:type="simple">khomyakova76@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/0000-0003-1093-2453</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Колоскова</surname><given-names>Элеонора Леонидовна</given-names></name><name name-style="western" xml:lang="en"><surname>Koloskova</surname><given-names>Eleonora L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ведущий ветеринарный врач сектора серологии и лептоспироза</p></bio><bio xml:lang="en"><p>Leading Veterinarian of the Serology and Leptospirosis Sector</p></bio><email xlink:type="simple">eleonora.koloskova@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7834-5875</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сидоров</surname><given-names>Иван Иванович</given-names></name><name name-style="western" xml:lang="en"><surname>Sidorov</surname><given-names>Ivan I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>заместитель директора</p></bio><bio xml:lang="en"><p>Deputy Director</p></bio><email xlink:type="simple">bmvl32@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Частное учреждение здравоохранения Больница РЖД-Медицина города Брянск, Брянск</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Private healthcare Institution the Hospital Russian Railways - Medicine of the Bryansk City, Bryansk</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Центральная научно-методическая ветеринарная лаборатория, Супонево</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Central Scientific and Methodological Veterinary Laboratory, Suponevo</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>25</day><month>11</month><year>2023</year></pub-date><volume>31</volume><issue>3</issue><issue-title>МОРФОЛОГИЧЕСКИЕ ВЕДОМОСТИ - MORPHOLOGICAL NEWSLETTER 2023-31-4</issue-title><fpage>59</fpage><lpage>66</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хомякова Н.В., Колоскова Э.Л., Сидоров И.И., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Хомякова Н.В., Колоскова Э.Л., Сидоров И.И.</copyright-holder><copyright-holder xml:lang="en">Khomyakova N.V., Koloskova E.L., Sidorov I.I.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" 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://www.morpholetter.com/jour/article/view/762">https://www.morpholetter.com/jour/article/view/762</self-uri><abstract><p>Классическая гистологическая картина переднего эпителия роговицы, известная по результатам стандартной гистологической техники и световой микроскопии препаратов химически фиксированного материала, описывает наличие трех клеточных слоев: базального – герминативного, среднего и поверхностного. На препаратах криофиксированного материала над клетками третьего слоя определяется еще один гомогенный слой, который принято идентифицировать как прекорнеальную слезную пленку, то есть слой жидкости. Анализ и сопоставление известных данных позволяют обозначить научную проблему, которая заключается в следующем. Структура гомогенного слоя ранее не изучалась, строение его неизвестно, следовательно, идентификация гомогенного слоя с прекорнеальной слезной пленкой не обоснована. Мы предполагаем, что гистологическая картина переднего эпителия на препаратах химически фиксированного материала является неполной, а гомогенный слой является структурным компонентом переднего эпителия. Цель исследования: изучить структуру переднего эпителия и гомогенного слоя на препаратах криофиксированного материала. Материал исследования - кадаверные глаза свиньи домашней (Sus scrofa domesticus). Методы исследования - световая микроскопия. В результате исследования впервые установлено, что гомогенный слой является структурным компонентом переднего эпителия роговицы. Между гомогенным слоем и слоем плоских клеток переднего эпителия определяется еще один слой в виде микроскопически выявляемой тонкой полоски. С учетом установленного факта следует заключить, что передний эпителий роговицы состоит из пяти слоев. Клетки в слоях находятся в уплотненном состоянии, степень которого увеличивается от базальной мембраны к фронтальной поверхности эпителия, достигая максимума на уровне гомогенного слоя. Клетки поверхностного слоя безъядерные, заполнены оксифильной массой, предположительно кератином, что указывает на процесс ороговения эпителиоцитов. Результаты исследования подтвердили предположение о том, что гистологическая картина на препаратах химически фиксированного материала является неполной. Идентификация гомогенного слоя с прекорнеальной слезной пленкой безосновательна.</p></abstract><trans-abstract xml:lang="en"><p>The classic histological picture of the anterior corneal epithelium, known from the results of standard histological techniques and light microscopy of preparations of chemically fixed material, describes the presence of three cell layers: basal - germinative, middle and superficial. On preparations of cryofixed material, another homogeneous layer is identified above the cells of the third layer, which is usually identified as the precorneal tear film, that is, a layer of liquid. Analysis and comparison of known data allows us to identify a scientific problem, which is as follows. The structure of the homogeneous layer has not been previously studied, its structure is unknown, therefore, the identification of the homogeneous layer with the precorneal tear film is not justified. We assume that the histological picture of the anterior epithelium on preparations of chemically fixed material is incomplete, and the homogeneous layer is a structural component of the anterior epithelium. Purpose of the study: the structure of the anterior epithelium and homogeneous layer on preparations of cryofixed material. The material for the study was preparations of the eyes of the domestic pig Sus scrofa domesticus, the research method was light microscopy. As a result of the study, it was established for the first time that the homogeneous layer is a structural component of the anterior corneal epithelium. Between the homogeneous layer and the layer of flat cells of the anterior epithelium, another layer is determined in the form of a microscopically detectable thin strip. Taking into account the established fact, it should be concluded that the anterior epithelium of the cornea consists of five layers. The cells in the layers are in a compacted state, the degree of which increases from the basement membrane to the frontal surface of the epithelium, reaching a maximum at the level of the homogeneous layer. The cells of the surface layer are anucleate, filled with an oxyphilic mass, presumably keratin, which indicates the process of keratinization of epithelial cells. The results of the study confirmed the assumption that the histological picture on preparations of chemically fixed material is incomplete. The identification of a homogeneous layer with the precorneal tear film is unfounded.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>орган зрения</kwd><kwd>роговица</kwd><kwd>передний эпителий роговицы</kwd><kwd>криофиксация</kwd><kwd>свинья домашняя</kwd></kwd-group><kwd-group xml:lang="en"><kwd>organ of vision</kwd><kwd>cornea</kwd><kwd>anterior corneal epithelium</kwd><kwd>cryofixation</kwd><kwd>domestic pig</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">Metz А. The Anatomy and Histology of the Human Eye. Philadelphia, 1868. URL: https://archive.org/details/anatomyhistology00metzuoft</mixed-citation><mixed-citation xml:lang="en">Metz А. The Anatomy and Histology of the Human Eye. Philadelphia, 1868. 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