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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">ophthalmology</journal-id><journal-title-group><journal-title xml:lang="ru">Офтальмология</journal-title><trans-title-group xml:lang="en"><trans-title>Ophthalmology in Russia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-5095</issn><issn pub-type="epub">2500-0845</issn><publisher><publisher-name>Ophthalmology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18008/1816-5095-2026-1-117-122</article-id><article-id custom-type="elpub" pub-id-type="custom">ophthalmology-2882</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>КЛИНИЧЕСКИЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CLINICAL STUDIES</subject></subj-group></article-categories><title-group><article-title>Цифровая аккомодационная астенопия. Результаты скринингового исследования субъективных проявлений многомерной психометрической шкалой в режиме онлайн. Сообщение 1</article-title><trans-title-group xml:lang="en"><trans-title>Digital Accommodative Asthenopia. Results of the Screening Study of Subjective Manifestations of a Multidimensional Psychometric Scale in On-line Mode. Message 1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0174-3637</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шайхутдинова</surname><given-names>Э. Ф.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaykhutdinova</surname><given-names>E. F.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шайхутдинова Элина Фаритовна –  врач‑офтальмолог </p><p>ул. 50 лет СССР, 8, Уфа, 450083</p></bio><bio xml:lang="en"><p>Shaykhutdinova Elina F., ophthalmologist</p><p>50 let USSR str., 8, Ufa, 450083</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3078-2464</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мухамадеев</surname><given-names>Т. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Mukhamadeev</surname><given-names>T. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Мухамадеев Тимур Рафаэльевич – доктор медицинских наук, заведующий кафедрой офтальмологии; заместитель генерального директора </p><p>ул. 50 лет СССР, 8, Уфа, 450083; ул. Ленина, 3, Уфа, 450008</p></bio><bio xml:lang="en"><p>Mukhamadeev Timur R., MD, head of the Chair of Ophthalmology, deputy director</p><p>50 let USSR str., 8, Ufa, 450083; Lenin str., 3, Ufa, 450008</p><p> </p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0212-2162</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ахмадеев</surname><given-names>Р. Р.</given-names></name><name name-style="western" xml:lang="en"><surname>Ahmadeev</surname><given-names>R. R.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ахмадеев Рустэм Раисович – доктор медицинских наук, профессор, нейрофизиолог, медицинский психолог</p><p>ул. Ленина, 3, Уфа, 450008; ул. Рихарда Зорге, 67/1, Уфа, 450075</p></bio><bio xml:lang="en"><p>Ahmadeev Rustem R., MD, Professor, neurophysiologist, medical psychologist</p><p>Lenin str., 3, Ufa, 450008; Richard Zorge str., 67/1, Ufa, 450075</p><p> </p><p> </p></bio><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ЗАО «Оптимедсервис»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Optimedservice</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ЗАО «Оптимедсервис»; &#13;
ФГБОУ ВО «Башкирский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Optimedservice; &#13;
Bashkir State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>ФГБОУ ВО «Башкирский государственный медицинский университет» Министерства здравоохранения Российской Федерации; &#13;
Всероссийский центр глазной и пластической хирургии ФГБОУ ВО «Башкирский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Bashkir State Medical University; &#13;
All-Russian Center for Eye and Plastic Surgery</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2026</year></pub-date><volume>23</volume><issue>1</issue><fpage>117</fpage><lpage>122</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Шайхутдинова Э.Ф., Мухамадеев Т.Р., Ахмадеев Р.Р., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Шайхутдинова Э.Ф., Мухамадеев Т.Р., Ахмадеев Р.Р.</copyright-holder><copyright-holder xml:lang="en">Shaykhutdinova E.F., Mukhamadeev T.R., Ahmadeev R.R.</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.ophthalmojournal.com/opht/article/view/2882">https://www.ophthalmojournal.com/opht/article/view/2882</self-uri><abstract><sec><title>Цель</title><p>Цель: исследовать характер, интенсивность и частоту основных субъективных проявлений цифровой аккомодационной астенопии в режиме онлайн, определить их связь с базовыми офтальмоэргономическими показателями. </p><p>Дизайн и методы исследования. Скрининговое онлайн-исследование проведено на 1310 учащихся (средний возраст 21,5 ± 0,1 года; из них 75,3 % — респонденты женского пола, 24,7 % — мужского). Использованная психометрическая шкала содержала 25 пунктов из 5 вопросов, отражающих основные симптомы аккомодационной астенопии, а также офтальмоэргономические вопросы. </p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. Средний стаж работы с мобильными экранными устройствами (МЭУ) составил 10,29 ± 0,1 года. При этом средняя ежедневная продолжительность, а также единовременная длительность пользования цифровыми технологиями (ЦТ) варьировали в широких пределах: до 1 часа и более 6 часов. Среднее расстояние от глаз до экрана составило 36,0 ± 0,5 см (от 5 до 120 см). Жалобы различной интенсивности и характера выразили 74,6 % обследованных, при этом с максимальной оценкой «постоянно» и «очень сильно» процентная доля обследованных составила: с затруднениями в фокусировке на дальней дистанции — 5,6 и 5,7 % респондентов соответственно, напряжение глаз при взгляде на экран — 2,3 и 2,7 %, затуманенность и расплывчатость — 1,7 и 1,2 % обследованных. Значимой корреляционной связи между стажем пользования девайсами и жалобами на проблемы с аккомодацией у обследованных респондентов выявлено не было. Положительная слабая, но значимая связь была обнаружена между показателями «продолжительность пользования ЦТ и МЭУ за сеанс» и «продолжительность пользования ЦТ и МЭУ в течение дня» с жалобами на напряжение при фиксации взгляда на экран, а также c затуманиванием зрения и проблемой фокусировки вдаль. Отсутствие значимой корреляционной связи между стажем пользования девайсами и аккомодационными жалобами может свидетельствовать о включении своего рода устойчивых, надежных механизмов компенсации аккомодации по типу долговременной адаптации, маскирующих субъективные проявления КЗС. Напротив, жалобы на аккомодационную астенопию, связанные с продолжительностью пользования за сеанс или в течение суток, отражают срочные, «аварийные» механизмы компенсации и проявляются более ярко в виде соответствующих жалоб на зрительный дискомфорт. </p></sec><sec><title>Заключение</title><p>Заключение. Делается вывод об адекватности и эффективности методического подхода с использованием многомерной шкалы в онлайн-режиме для анализа субъективных проявлений цифровой аккомодационной астенопии. Данные подтверждают важную роль офтальмоэргономических факторов в формировании цифровой аккомодационной астенопии у пользователей информационных технологий.</p></sec></abstract><trans-abstract xml:lang="en"><sec><title>Purpose</title><p>Purpose: to investigate the nature, intensity and frequency of the main subjective manifestations of digital accommodative asthenopia online, to determine their relationship with basic ophthalmoergonomic indicators.</p><p>Design and research methods. The online screening study was conducted on 1310 students (average age 21.5 ± 0.1 years; 75.3 % of respondents were female, 24.7 % were male). The psychometric scale used contained 25 items from 5 questions reflecting the main symptoms of accommodative asthenopia, as well as ophthalmoergonomic questions.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. The average work experience with mobile screen devices (MSD) was 10.29 ± 0.1 years. At the same time, the average daily duration, as well as the one-time duration of using the digital television, varied widely up to 1 hour and more than 6 hours. The average distance from the eyes to the screen was 36.0 ± 0.5 cm (from 5 to 120 cm). Complaints of varying intensity and nature were expressed by 74.6 % of respondents, with the maximum rating of “constantly” and “very strong” in the percentage of respondents: difficulty focusing at a distance (5.6 % and 5.7 % of respondents, respectively), eye strain when looking at the screen — 2.3 % and 2.7 %, fogginess and blurriness — 1.7 % and 1.2 % of respondents. There were no significant correlation between the length of use of devices and complaints of accommodation problems among the respondents surveyed. A positive weak but significant relationship was found between the indicators “duration of using the digital optics and digital electronic devices per session” and “duration of using the digital optics and digital electronic devices during the day” with complaints of strain when fixing the gaze on the screen, as well as with blurred vision and problems focusing into the distance. The absence of a significant correlation between the length of use of devices and accommodative complaints may indicate the inclusion of some kind of stable, reliable mechanisms of accommodation compensation by the type of long-term adaptation, masking the subjective manifestations of the digital accommodative asthenopia. On the contrary, complaints of accommodative asthenopia associated with the duration of use per session or during the day reflect urgent, “emergency” compensation mechanisms and are manifested more clearly in the form of corresponding complaints of visual discomfort. </p></sec><sec><title>Conclusion</title><p>Conclusion. A conclusion is made about the adequacy and effectiveness of the methodological approach using a multidimensional scale in on-line mode for analyzing the subjective manifestations of digital accommodative asthenopia. The data confirm the important role of ophthalmoergonomic factors in the formation of digital accommodative asthenopia in information technology users.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>компьютерный зрительный синдром</kwd><kwd>аккомодационная астенопия</kwd><kwd>онлайн-анкетирование</kwd><kwd>жалобы на зрительный дискомфорт</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computer vision syndrome</kwd><kwd>accommodative asthenopia</kwd><kwd>on-line questionnaire</kwd><kwd>complaints of visual discomfort</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">Ccami-Bernal F, Soriano-Moreno DR, Romero-Robles MA, Barriga-Chambi F, Tuco KG, Castro-Diaz SD, Nuñez-Lupaca JN, Pacheco-Mendoza J, GalvezOlortegui T, Benites-Zapata VA. Prevalence of computer vision syndrome: A systematic review and meta-analysis. J Optom. 2024 Jan-Mar;17(1):100482. doi: 10.1016/j.optom.2023.100482.</mixed-citation><mixed-citation xml:lang="en">Ccami-Bernal F, Soriano-Moreno DR, Romero-Robles MA, Barriga-Chambi F, Tuco KG, Castro-Diaz SD, Nuñez-Lupaca JN, Pacheco-Mendoza J, GalvezOlortegui T, Benites-Zapata VA. Prevalence of computer vision syndrome: A systematic review and meta-analysis. J Optom. 2024 Jan-Mar;17(1):100482. doi: 10.1016/j.optom.2023.100482.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Овечкин ИГ, Шавшина ДА. Компьютерный зрительный синдром с позиции принципов диагностики и лечения аккомодационного и сенсорного зрительного утомления: обзор литературы. Российский медицинский журнал. 2025;31(1):68–75. doi: 10.17816/medjrf643341.</mixed-citation><mixed-citation xml:lang="en">Ovechkin IG, Shavshina DA. Computer vision syndrome from the standpoint of the principles of diagnosis and treatment of accommodative and sensory visual fatigue: a literature review. Russian Medical Journal. 2025;31(1):68–75 (In Russ.). doi: 10.17816/medjrf643341.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Овечкин ИГ, Гатилов ДВ, Беликова ЕИ, Овечкин НИ, Кумар В. Взаимосвязь различных форм аккомодационной астенопии с особенностями профессиональной деятельности пациентов зрительно-напряженного труда с явлениями компьютерного зрительного синдрома. Офтальмология. 2023;20(2):308– 313. doi: 10.18008/1816-5095-2023-2-308-313.</mixed-citation><mixed-citation xml:lang="en">Ovechkin IG, Gatilov DV, Belikova EI, Ovechkin NI, Kumar V. The relationship between various forms of accommodative asthenopia and the characteristics of professional activity of patients with visually intense work with the phenomena of computer vision syndrome. Ophthalmology. 2023;20(2):308–313 (In Russ.). doi: 10.18008/1816-5095-2023-2-308-313.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Трубилин ВН, Юдин ВЕ, Овечкин ИГ, Трубилина МА, Орлова ОМ, Ковригина ЕИ, Будко АА, Матвиенко ВВ. Современные аспекты компьютерного зрительного синдрома. Клиническая практика. 2021;12(3):43–50. doi: 10.17816/clinpract71366.</mixed-citation><mixed-citation xml:lang="en">Trubilin VN, Yudin VE, Ovechkin IG, Trubilina MA, Orlova OM, Kovrigina EI, Budko AA, Matvienko VV. Modern aspects of computer vision syndrome. Clinical practice. 2021;12(3):43–50 (In Russ.). doi: 10.17816/clinpract71366.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Проскурина ОВ, Тарутта ЕП, Иомдина ЕН, Страхов ВВ, Бржеский ВВ. Актуальная классификация астенопии: клинические формы и стадии. Российский офтальмологический журнал. 2016;9(4):69–73. doi: 10.21516/2072-0076-20169-4-69-7.</mixed-citation><mixed-citation xml:lang="en">Proskurina OV, Tarutta EP, Iomdina EN, Strakhov VV, Brzhesky VV. Current classification of asthenopia: clinical forms and stages. Russian Ophthalmological Journal. 2016;9(4):69–73 (In Russ.). doi: 10.21516/2072-0076-2016-9-4-69-7.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">De-Hita-Cantalejo C, Sánchez-González JM, Silva-Viguera C, Sánchez-González MC. Tweenager Computer Visual Syndrome Due to Tablets and Laptops during the Postlockdown COVID-19 Pandemic and the Influence on the Binocular and Accommodative System. J Clin Med. 2022 Sep 9;11(18):5317. doi: 10.3390/jcm11185317.</mixed-citation><mixed-citation xml:lang="en">De-Hita-Cantalejo C, Sánchez-González JM, Silva-Viguera C, Sánchez-González MC. Tweenager Computer Visual Syndrome Due to Tablets and Laptops during the Postlockdown COVID-19 Pandemic and the Influence on the Binocular and Accommodative System. J Clin Med. 2022 Sep 9;11(18):5317. doi: 10.3390/jcm11185317.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Kaur K, Gurnani B, Nayak S, Deori N, Kaur S, Jethani J, Singh D, Agarkar S, Hussaindeen JR, Sukhija J, Mishra D. Digital Eye Strain — A Comprehensive Review. Ophthalmol Ther. 2022 Oct;11(5):1655–1680. doi: 10.1007/s40123-022-00540-9.</mixed-citation><mixed-citation xml:lang="en">Kaur K, Gurnani B, Nayak S, Deori N, Kaur S, Jethani J, Singh D, Agarkar S, Hussaindeen JR, Sukhija J, Mishra D. Digital Eye Strain — A Comprehensive Review. Ophthalmol Ther. 2022 Oct;11(5):1655–1680. doi: 10.1007/s40123-022-00540-9.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Redondo B, Jiménez R, Vera J, Rosenfield M. The impact of break schedules on digital eye strain symptoms and ocular accommodation during prolonged near work. Exp Eye Res. 2025 Sep;258:110463. doi: 10.1016/j.exer.2025.110463.</mixed-citation><mixed-citation xml:lang="en">Redondo B, Jiménez R, Vera J, Rosenfield M. The impact of break schedules on digital eye strain symptoms and ocular accommodation during prolonged near work. Exp Eye Res. 2025 Sep;258:110463. doi: 10.1016/j.exer.2025.110463.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Анастази А, Урбина С. Психологическое тестирование. СПб., 2009.</mixed-citation><mixed-citation xml:lang="en">Anastasi A, Urbina S. Psychological testing. St. Petersburg, 2009 (In Russ.).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">American Academy of Ophthalmology. Computer vision syndrome (digital eye strain). EyeWiki. Available from: https://eyewiki.org/Computer_Vision_Syndrome_(Digital_Eye_Strain). Accessed June 17, 2025.</mixed-citation><mixed-citation xml:lang="en">American Academy of Ophthalmology. Computer vision syndrome (digital eye strain). EyeWiki. Available from: https://eyewiki.org/Computer_Vision_Syndrome_(Digital_Eye_Strain). Accessed June 17, 2025.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">American Optometric Association. Computer vision syndrome. Healthy eyes. Available from: https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/computer-vision-syndrome. Accessed June 09, 2025.</mixed-citation><mixed-citation xml:lang="en">American Optometric Association. Computer vision syndrome. Healthy eyes. Available from: https://www.aoa.org/healthy-eyes/eye-and-vision-conditions/computer-vision-syndrome. Accessed June 09, 2025.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Ramteke S, Satgunam P. At what distance should digital devices be viewed? Eye (Lond). 2024;38(4):815–816. doi: 10.1038/s41433-023-02781-9.</mixed-citation><mixed-citation xml:lang="en">Ramteke S, Satgunam P. At what distance should digital devices be viewed? Eye (Lond). 2024;38(4):815–816. doi: 10.1038/s41433-023-02781-9.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Jaschinski W, Heuer H, Kylian H. Preferred position of visual displays relative to the eyes: a field study of visual strain and individual differences. Ergonomics. 1998 Jul;41(7):1034–1049. doi: 10.1080/001401398186586.</mixed-citation><mixed-citation xml:lang="en">Jaschinski W, Heuer H, Kylian H. Preferred position of visual displays relative to the eyes: a field study of visual strain and individual differences. Ergonomics. 1998 Jul;41(7):1034–1049. doi: 10.1080/001401398186586.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Naipal S, Khumalo N, Rahmtoola M, Chagi S, Didi L, Mthethwa S, Ndhlovu S, Persadh B, Rampersad N. Viewing distance, font size and symptoms of eyestrain in non-presbyopic and presbyopic smartphone users. Ophthalmic Physiol Opt. 2025 Jan;45(1):269–279. doi: 10.1111/opo.13410.</mixed-citation><mixed-citation xml:lang="en">Naipal S, Khumalo N, Rahmtoola M, Chagi S, Didi L, Mthethwa S, Ndhlovu S, Persadh B, Rampersad N. Viewing distance, font size and symptoms of eyestrain in non-presbyopic and presbyopic smartphone users. Ophthalmic Physiol Opt. 2025 Jan;45(1):269–279. doi: 10.1111/opo.13410.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Rempel D, Willms K, Anshel J, Jaschinski W, Sheedy J. The effects of visual display distance on eye accommodation, head posture, and vision and neck symptoms. Hum Factors. 2007 Oct;49(5):830–838. doi: 10.1518/001872007X230208.</mixed-citation><mixed-citation xml:lang="en">Rempel D, Willms K, Anshel J, Jaschinski W, Sheedy J. The effects of visual display distance on eye accommodation, head posture, and vision and neck symptoms. Hum Factors. 2007 Oct;49(5):830–838. doi: 10.1518/001872007X230208.</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Kim S, Koo S. Effect of duration of smartphone use on muscle fatigue and pain caused by forward head posture in adults. Journal of Physical Therapy Science. 2016;8:1669–1672. doi: 10.1589/jpts.28.1669.</mixed-citation><mixed-citation xml:lang="en">Kim S, Koo S. Effect of duration of smartphone use on muscle fatigue and pain caused by forward head posture in adults. Journal of Physical Therapy Science. 2016;8:1669–1672. doi: 10.1589/jpts.28.1669.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Portello JK, Rosenfield M, Bababekova Y, Estrada JM, Leon A. Computer-related visual symptoms in office workers. Ophthalmic Physiol Opt. 2012 Sep;32(5):375– 382. doi: 10.1111/j.1475-1313.2012.00925.x.</mixed-citation><mixed-citation xml:lang="en">Portello JK, Rosenfield M, Bababekova Y, Estrada JM, Leon A. Computer-related visual symptoms in office workers. Ophthalmic Physiol Opt. 2012 Sep;32(5):375– 382. doi: 10.1111/j.1475-1313.2012.00925.x.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Chase C, Tosha C, Borsting E, Ridder WH 3rd. Visual discomfort and objective measures of static accommodation. Optom Vis Sci. 2009 Jul;86(7):883–889. doi: 10.1097/OPX.0b013e3181ae1b7c.</mixed-citation><mixed-citation xml:lang="en">Chase C, Tosha C, Borsting E, Ridder WH 3rd. Visual discomfort and objective measures of static accommodation. Optom Vis Sci. 2009 Jul;86(7):883–889. doi: 10.1097/OPX.0b013e3181ae1b7c.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Kim DJ, Lim CY, Gu N, Park CY. Visual Fatigue Induced by Viewing a Tablet Computer with a High-resolution Display. Korean J Ophthalmol. 2017 Oct;31(5):388– 393. doi: 10.3341/kjo.2016.0095.</mixed-citation><mixed-citation xml:lang="en">Kim DJ, Lim CY, Gu N, Park CY. Visual Fatigue Induced by Viewing a Tablet Computer with a High-resolution Display. Korean J Ophthalmol. 2017 Oct;31(5):388– 393. doi: 10.3341/kjo.2016.0095.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Phamonvaechavan P, Nitiapinyasagul R. A comparison between effect of viewing text on computer screen and iPad® on visual symptoms and functions. Siriraj Med J. 2017;69:185–189. doi: 10.14456/smj.2017.37.</mixed-citation><mixed-citation xml:lang="en">Phamonvaechavan P, Nitiapinyasagul R. A comparison between effect of viewing text on computer screen and iPad® on visual symptoms and functions. Siriraj Med J. 2017;69:185–189. doi: 10.14456/smj.2017.37.</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
