Prevention method of toric intraocular lens rotation after phacoemulsification of cataract using a standard capsule ring

At the same time, phacoemulsification of cataracts remains the most popular surgery. But the problem among phacosurgeons is the correction of existing corneal astigmatism. According to studies, about 30% of the world's population have corneal astigmatism with a strength of 0.75D and above, which leads to a decrease in visual acuity after phacoemulsification of cataracts in the absence of its correction.The most commonly used method to correct corneal astigmatism is the implantation of toric intraocular lenses (TIOL). The main condition for obtaining high visual acuity after TIOL implantation is the location of the astigmatic component of the artificial lens in accordance with the strong meridian of the cornea. The aim of this study was to evaluate the effectiveness of the proposed method of preventing the toric intraocular lens rotation after phacoemulsification of cataracts in the eyes with corneal astigmatism by implantation of a standart capsule ring.Material and methods. The article presents the results of a comprehensive examination of 43 patients (59 eyes) who underwent surgery by phacoemulsification of cataracts with implantation of toric IOL to correct concomitant corneal astigmatism. Corneal astigmatism according to keratometry ranged from 0.5D to 4.25D (average 1.96 ± 0.1 D). Patients were divided into 2 groups. The first group consisted of 26 patients (31 eyes). Patients in this group underwent phacoemulsification with toric IOL implantation according to standard techniques without the use of techniques that prevent rotation of the artificial lens in the postoperative period. The second group included 18 patients (28 eyes) who were operated on according to our proposed prevention method of TIOL rotation. As a result of the study, it was found that rotation of TIOL was detected 6 months after surgery in the I group without the use of developed method in 22 eyes (70.9%), in the II group, where the capsule ring was implanted, rotation occurred in 12 eyes (42.85%). In the II group in all cases, the deviation of the TIOL axis did not exceed 6 degrees. The proposed method of prevention of rotation of TIOL allows to increase the efficiency of phacoemulsification of cataracts.Conclusions. Developed a method of preventing the rotation of the toric intraocular lens using a standard capsule ring, which is implanted and located on top of the haptic support elements of the artificial lens can increase the efficiency of phacoemulsification of cataracts in the eyes with corneal astigmatism, contributes to the rotational stability of the toric lens and provides long-term results of visual functions, reduces the need for repeated surgery due to reposition of the rotated lens and can be recommended for implementation in the practice of ophthalmic surgeons.The use of implantation of a standard capsule ring according to the proposed in this study method prevents the rotation of the toric intraocular lens by more than 6 degrees in all cases, which does not significantly reduce visual acuity and does not require reposition of the artificial lens. This method of preventing rotation of the toric intraocular lens allows to achieve visual acuity of 0.7 and above in 85.6% of cases

Dialogical organics of pedagogical discourse: linguo-pragmatic aspect

The article discusses the basic dialogue properties; it is particularly emphasized that the problems of studying the text, discourse and language of the operationalterminological apparatus are connected with the discursive concept of dialogis

Impact of corneal astigmatism on refractive outcomes after phacoemulsification with implantation of a spherical IOL

Background: To date, particular emphasis is being put to correction of preoperative corneal astigmatism in phacoemulsification, since approximately 30% of the world’s population has astigmatism of at least 0.75D which results in decreased visual acuity after cataract surgery. Purpose: To assess the effect of corneal astigmatism on refractive outcomes of phacoemulsification with implantation of a spheric intraocular lens (IOL). Material and Methods: We retrospectively analyzed the outpatient medical records of 39 patients (50 eyes) who received phacoemulsification with a spherical IOL and had corneal astigmatism of 0.5-3.75D (as assessed by keratometry). Eyes were divided into four groups based on the degree of corneal astigmatism. We assessed changes in visual acuity and corneal astigmatism and refractive outcomes of cylindrical correction at one month after surgery. Results: The greater the presurgical astigmatism, the lower was uncorrected visual acuity at one month after surgery. There was no significant difference (р > 0.05) in change in corneal astigmatism values after phacoemulsification. In group 1 (preoperative astigmatism of 0.75 D or less) and group 2 (preoperative astigmatism of 1.0 to 1.5 D), the mean increase in visual acuity after cylindrical refractive correction was 10% or less, and had no significant impact on the quality of vision. In group 3 (preoperative astigmatism of 1.75 to 2.5 D) and group 4 (preoperative astigmatism of 2.75 D or more), the mean increase in visual acuity was 15% and 25%, respectively. Conclusion: Surgically induced astigmatism after phacoemulsification had no substantial impact on refractive outcomes. When planning refractive outcomes for eyes with astigmatism after cataract surgery, it should be taken into account that implanting a spherical IOL is acceptable only for eyes with an amount of preoperative astigmatism of 0.75 D or less and vertical axis of astigmatism. Cataract patients with preoperative corneal astigmatism of >0.75 D will require implantation of a toric IOL or a plan for astigmatism correction with another method

Protection of rights of children under international and Russian legislation

This study was aimed at discussing the main aspects regarding the protection of rights of children under international and Russian law. An analysis of the norms regarding the protection of the rights, freedoms and legitimate interests of children from the point of view of international and Russian legislation was presented. The main directions of the state policy on the protection of the rights and legitimate interests of children were also covere

Investigation Of Technological Properties Of Powder Of Eggplants

The aim of the article is to study and to generalize technological properties of eggplant powder, produced by infrared drying at temperatures 50-60 ºС. The results of the conducted complex of studies reflect main technological and consumption properties of the received puree that plays an important role at creating new culinary products.So, for studying technological properties of food eggplant powder, there was considered the complex of base functional-technological properties of powder, produced by infrared drying.For finding optimal conditions of rehydration of eggplant powders, there was studied the influence of such technological factors as: swelling ability; liquid; powder ratio; influence of the solvent temperature on renovation; renovation duration; degree of comminution of powders.Main parameters that influence the renovation ability of dried eggplants are investigated and studied in the article. The results of the studies of technological properties of eggplant powders prove their high rehydration properties. It gives a possibility to use powders at producing different culinary products not only for enriching them with functional ingredients, but also for giving them new technological properties.Based on the obtained results, there was elaborated and presented the new technological scheme of using renewed powders in food compositions

Inadmissibilidade de experimentos em pessoas: imperativos constitucionais dos países pós- soviéticos

The article revealed typical and peculiar contexts, based on the analysis of the constitutional texts of CIS countries concerning the reflection of compulsory experiments on people prohibition. The approaches of states concerning the forbidden types of experiments on people were studied and, taking this into account, the conclusion is made about the advisability of prohibitive formulations by the analogy with those that are implemented in constitutional provisions on the inadmissibility of discrimination on any grounds. It was noted that with all the differences in the approaches of this group of states, they are all determined by the constitutional imperative of experiments on people inadmissibility.El artículo reveló contextos típicos y peculiares, basados en el análisis de los textos constitucionales de los países de la CEI sobre el reflejo de los experimentos obligatorios y su prohibición con personas. Se estudiaron los enfoques de los estados sobre los tipos prohibidos de experimentos con personas y, tomando esto en cuenta, se llegó a la conclusión sobre la conveniencia de formulaciones prohibitivas por la analogía con aquellas que se implementan en disposiciones constitucionales sobre la inadmisibilidad de la discriminación por cualquier motivo. Se observó que con todas las diferencias en los enfoques de este grupo de estados, todos están determinados por el imperativo constitucional de los experimentos sobre la inadmisibilidad de las personas.O artigo revelou contextos típicos e peculiares, com base na análise dos textos constitucionais dos países da CEI sobre o reflexo de experimentos compulsórios sobre a proibição de pessoas. As abordagens dos estados sobre os tipos proibidos de experimentos em pessoas foram estudadas e, levando isso em conta, a conclusão é feita sobre a conveniência de formulações proibitivas pela analogia com aquelas que são implementadas em disposições constitucionais sobre a inadmissibilidade da discriminação por qualquer razão. Notou-se que, com todas as diferenças nas abordagens desse grupo de estados, elas são todas determinadas pelo imperativo constitucional de experimentos sobre inadmissibilidade de pessoas.&nbsp

Inverse Spectral-Scattering Problem with Two Sets of Discrete Spectra for the Radial Schroedinger Equation

The Schroedinger equation on the half line is considered with a real-valued, integrable potential having a finite first moment. It is shown that the potential and the boundary conditions are uniquely determined by the data containing the discrete eigenvalues for a boundary condition at the origin, the continuous part of the spectral measure for that boundary condition, and a subset of the discrete eigenvalues for a different boundary condition. This result extends the celebrated two-spectrum uniqueness theorem of Borg and Marchenko to the case where there is also a continuous spectru

Homogeneous singularities inside collapsing wormholes

We analyze analytically and numerically the origin of the singularity in the course of the collapse of a wormhole with the exotic scalar field Psi with negative energy density, and with this field Psi together with the ordered magnetic field H. We do this under the simplifying assumptions of the spherical symmetry and that in the vicinity of the singularity the solution of the Einstein equations depends only on one coordinate (the homogeneous approximation). In the framework of these assumptions we found the principal difference between the case of the collapse of the ordinary scalar field Phi with the positive energy density together with an ordered magnetic field H and the collapse of the exotic scalar field Psi together with the magnetic field H. The later case is important for the possible astrophysical manifestation of the wormholes.Comment: 10 pages, 5 figures each of which has a),b),c),and d) sub-figures. To be published in "Physical review. D, Particles, fields, gravitation, and cosmology

Area of Accreditation of the Sanitary Industrial Laboratory

В данной работе проанализирована литература и интернет-источники, содержащие требования к санитарно-промышленным и испытательным лабораториям, проанализирована актуальная нормативная документация, на основе которой разработан пакет документов по метрологическому обеспечению санитарно-промышленной лаборатории.This work analyzes the literature and Internet sources containing the requirements for sanitary-industrial and testing laboratories, analyzed the current regulatory documentation, on the basis of which a package of documents on the metrological support of the sanitary-industrial laboratory was developed

Quality of life at machine operators of agriculture

The purpose this research was to investigate the quality of life machine operators of agriculture, depending on the status of the age and length of service in the profession. To assess the quality of life was used widely used international Russian-language health a validated questionnaire SF-36. Studies have been conducted practically healthy quality of life (based on the results of periodic medical examinations) machine operators of agriculture Saratov region (102 people) aged 30 to 59 years of experience in the profession from 3 to 35 years. Average values of an indicator for age groups 2 and 3 made "the general health", respectively, 95,2 and 78,7 % from level characteristic for younger age group. Intergroup distinction was noted between average sizes of this indicator at persons at the age of 30-39 years and 50-59 years, and also 40-49 summer machine operators and workers of advanced age (50-59 years). 1t is established that with increase in calendar age at machine operators of agriculture statistically significant decrease in values of indicators of quality of life to scales the general health, physical functioning, physical and role functioning and viability. With increase in length of service at machine operators decrease in values of indicators of physical functioning and role physical functioning. A statistically significant weak negative correlation between the level of quality of life, age (r = -0,39) and professional experience (r = -0,31). 1n this case, the highest correlation between the age of the examined patients and quality of life was typical of the general health scale (r = -0,37), physical functioning (r = -0,41), and role physical functioning (r = -0,34). Professional experience correlated with the level of physical functioning (r = -0,30) and role^hysical functioning (r = -0,32), has practically no effect on the subjective assessment of general health (r = -0,22). Results of researches allow recommending questionnaire SF-36 use when forming individual and group improving programs for machine operators of agricultural production