Глия В Трехчастном Нервно-Мышечном Синапсе

Proskurina, S. E.; Петров, К. А.

doi:10.1134/s0869813919100091

Cited by 2 publications

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“…Все пациенты были разделены на три равнозначные по возрасту и гендерному признаку группы, соответствующие (по величине СЭ) слабой (до 3,0 дптр, 100 пациентов), средней (3,,0 дптр, 100 пациентов) и высокой (6,,0 дптр, 100 пациентов) степени близорукости. У пациентов было выполнено стандартное офтальмологическое обследование, а также (в соответствии с целевыми задачами настоящей работы) проведена объективная аккомодография на приборе Righton Speedy-I (Япония) с дальнейшим расчетом (по специальной компьютерной программе) коэффициента микрофлюктуаций цилиарной мышцы глаза (КМФ), отражающего высокочастотный компонент колебаний рефракции, а также коэффициента аккомодационного ответа (КАО), оценивающего реакцию глаза на аккомодационный стимул.…”

Section: методыunclassified

“…Методологической основой исследования явилась классификация «Экспертного совета по аккомодации и рефракции Российской Федерации» (ЭСАР), согласно которой в качестве основных выделяют два вида АА: привычное избыточное напряжение аккомодации (ПИНА) и астеническая форма аккомодационной астенопии (АФАА) [6]. В соответствии с ранее проведенными исследованиями [7] на данном типе Righton Speedy-I диагностика вида АА осуществлялась по следующим показателям: при КМФ менее 53,0 отн.…”

Section: методыunclassified

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Excimer Laser Correction of Myopia in Patients with Visually Intense Work — Is It Necessary to Determine the Form of Accommodative Asthenopia?

et al. 2023

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Рurpose — to study the frequency of occurrence of various forms of accommodative asthenopia (AA) in patients with visually stressful work (VSW) with different degrees of myopia planning LASIK.Methods. As part of the preoperative examination, 300 patients with VSW were under observation. There were three groups of equal age and gender, corresponding to weak (up to 3.0 diopters, 100 patients), moderate (3.25–6.0 diopters, 100 patients ) and high (6.25–8.0 diopters, 100 patients) degrees of myopia. All patients underwent objective accommodation using the Righton Speedy-I device (Japan) with further calculation of the coefficient of microfluctuations of the ciliary muscle of the eye (KMF). Diagnosis of the type of AA was carried out according to the following indicators: with KMF less than 53.0 rel. un. — asthenic form of accommodative asthenopia (AFAA), pathology; at KMF from 53.0 to 58.0 rel. — norm; at KMF more than 58.0 rel.un. — Habitual Excessive Tension of Accommodation (HETA), pathology.Results. The incidence of AA (any form) was 51–57 % and weakly depended on the degree of myopia. A significant increase (compared with the literature data) in patients with AA according to the results of this work is due to the following factors: the examination of patients exclusively with VSW, who daily perform professional visual activity at the time of the examination, as well as a wide (24–34 years) the age range of the subjects. The probability of occurrence of HETA and AFAA is quite comparable and amounted to 29–36 % and 21–23 %, respectively. The obtained results are illustrated by typical accomodograms. Conclusion: the high incidence of both forms of AA actualizes further research aimed at assessing the dynamics of the state of the accommodative system of the eye after excimer laser surgery for myopia, as well as the development of a method for correcting AA, taking into account a personalized approach that allows performing the correct diagnosis of various forms of AA (HETA, AFAA), which, ultimately, will provide adequate treatment from the position of choosing both the actual method (physical factor) and the required optical, amplitude and time parameters of exposure.

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Section: методыunclassified

Excimer Laser Correction of Myopia in Patients with Visually Intense Work — Is It Necessary to Determine the Form of Accommodative Asthenopia?

et al. 2023

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“…Проведенный анализ указывает, что достаточно большой контингент пациентов, планирующих ЛАСИК, являются лицами зрительно-напряженного труда (ЗНТ), в этом случае пациент ожидает после выполнения операции снятие и «выбрасывание» очков (контактных линз), «идеальное» (в любых условиях освещенности) зрение, максимально короткий по продолжительности реабилитационный период с продолжением профессиональной деятельности в том же или увеличенном объеме, а также отсутствие зрительного утомления [2][3][4]. Применительно к последнему тезису следует отметить, что зрительное утомление у пациентов ЗНТ непосредственно связано с возникновением аккомодационной астенопии (АА) как ведущего функционального нарушения зрительной системы при длительной визуальной деятельности, при этом основными проявлениями АА являются привычное избыточное напряжение аккомодации (ПИНА) и астеническая форма аккомодационной астенопии (АФАА) [5][6][7].…”

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Dynamics of Accommodative Asthenopia in Patients with Visually Intense Work after LASIK with Different Degrees of Myopia

Belikova,

Gatilov,

Ovechkin

et al. 2023

Oftalʹmologiâ

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Purpose — to study the dynamics of accommodative asthenopia (AA) in patients with visually stressful labor (VLT) after laser keratomileusis in situ (LASIK) with different degrees of myopia. Patients and methods. There were 300 patients with VLT under supervision, divided into three groups of equal age and gender, corresponding to weak (up to 3.0 diopters, 100 patients, 200 eyes), medium (3.25–6.0 diopters, 100 patients, 200 eyes) and high (6.25–8.0 diopters, 100 patients, 200 eyes) degrees of myopia. All patients underwent objective accommodation using the Righton Speedy-I device (Japan) with further calculation of the coefficient of microfluctuations of the ciliary muscle of the eye (CMF). Diagnosis of the type of AA was carried out according to the following indicators: with CMF less than 53.0 rel. un. — asthenic form of accommodative asthenopia (AFAA); at CMF from 53.0 to 58.0 rel. un. — NORM; at CMF more than 58.0 rel. un. — habitual excess tension of accommodation (PINA). The survey was carried out before and three months after the operation. Statistical analysis of the results of the study was performed on the basis of the rate of occurrence (in % of the total number of eyes) of different dynamics (before-after surgery) AA (NORM-NORM; PINA-PINA; AFAA-AFAA; NORM-AFAA; NORM; PINA-AFAA; AFAA-NORM; AFAA-PINA). Results. The change in the form of AA varied from 2 % (APAA-PINA) to 18 % (PINANORM), averaged 15 % and was not statistically significant. The results obtained naturally reflect the state of AA as an adequate physiological response of the accommodative system of the eye to long-term, intense visual work with a fairly high level of responsibility for the result. Based on the above situation and the patient’s desire to maintain (in some cases even increase) the volume of daily visual load after the operation, it is unlikely to expect a significant improvement in the state of accommodation. Conclusion. LASIK with different degrees of myopia in patients with VLT has practically no effect on the dynamics of AA and requires a complex of therapeutic and restorative measures based on the development of methodological principles from the standpoint of a differentiated approach to the form of AA and the basic provisions of medical rehabilitaton.

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Глия В Трехчастном Нервно-Мышечном Синапсе

Cited by 2 publications

References 0 publications

Excimer Laser Correction of Myopia in Patients with Visually Intense Work — Is It Necessary to Determine the Form of Accommodative Asthenopia?

Excimer Laser Correction of Myopia in Patients with Visually Intense Work — Is It Necessary to Determine the Form of Accommodative Asthenopia?

Dynamics of Accommodative Asthenopia in Patients with Visually Intense Work after LASIK with Different Degrees of Myopia

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