scholarly journals MANUAL AND YAG-LASER ANTERIOR CAPSULORHEXIS SURGERY OF CONGENITAL ECTOPIA OF THE LENS IN MARFAN SYNDROME IN CHILDREN

2018 ◽  
Vol 13 (1) ◽  
pp. 26-30
Author(s):  
L. A. Katargina ◽  
T. B. Kruglova ◽  
N. N Arestova ◽  
N. S Egiyan
Keyword(s):  
Marfan Syndrome ◽  
Crystalline Lens ◽  
Instrumental Method ◽  
Laser Technique ◽  
Mechanical Pressure ◽  
Anterior Capsule ◽  
Yag Laser ◽  
Lens Subluxation ◽  
Advantages And Disadvantages

Purpose. is to optimize the tactics of performing anterior capsulorhexis in children with congenital lens subluxation in Marfan syndrome with the use of manual and YAG - laser technique. Material and methods. There were observed 25 patients (34 eyes) aged 4 to 11 years old with lens subluxation: 7 children (10 eyes) with congenital cataract and 18 patients (24 eyes) of the clear crystalline lens in Marfan syndrome. The degree of ectopia was different: 14 eyes - 1 degree, 16 eyes-2 degree and 4 eyes-3 degree of crystal ectopia. Manual circular continuous capsulorexis performed 15 eyes in 12 childrens, YAG-laser capsulectomy-19 eyes in 13 children. Results. Use of YAG - laser equipment allowed to excise planned part of of the anterior capsule without mechanical pressure on not fixed lens. Full of YAG-laser anterior capsulorhexis could not be executed in eyes with 3 degree subluxation of the lens (a significant portion of the anterior capsule is covered with an iris). Manual method allowed to execute anterior capsulorhexis at any degree of subluxation of the lens, but required multiple manipulations on the anterior capsule because of clinical and anatomical features anterior capsule in eyes with subluxation of the lens, which significantly prolonged the time of surgery, increasing the risk of developing exudative and proliferative reactions. YAG - laser anterior capsulotomy (dissection of the anterior capsule by YAG laser) with the completion of capsulotomy with the help of instrumental method increases the quality of the surgery. Conclusion.To perform anterior capsulorhexis in children with lens subluxation 1 and 2 degrees can be applied a manual and YAG-laser methods, each of which has its advantages and disadvantages.

scholarly journals Mommy, why can’t I see clearly?

2020 ◽  
Vol 2 (3) ◽  
pp. 244-250
Author(s):  
Nurulhuda Md Amin ◽  
Safiyah Jameelah Mohd Yusof ◽  
Nor Fadzillah Abd Jalil ◽  
Raja Norliza Raja Omar ◽  
Mushawiahti Mustapha
Keyword(s):  
Visual Acuity ◽  
Marfan Syndrome ◽  
Crystalline Lens ◽  
Visual Axis ◽  
Ectopia Lentis ◽  
Lens Subluxation ◽  
Corrected Visual Acuity ◽  
Best Corrected Visual Acuity ◽  
Iris Claw

Ectopia lentis or crystalline lens subluxation is one of the major criteria to diagnose Marfan syndrome. It may vary from mild lens subluxation to lens dislocation. Herewith is a case report of a 4-year-old autistic boy who had never been diagnosed with Marfan syndrome. He presented to the clinic after his parents noticed he had difficulty focusing on near objects. His bilateral best-corrected visual acuity was 6/60. On examination, there was bilateral lens subluxation superotemporally and lens equator blocking his visual axis. He was sent to the paediatric team and further Marfan workout showed dilated aortic root. He was then diagnosed with Marfan syndrome. He underwent bilateral lens aspiration, anterior vitrectomy, and iris-claw lens implantation. His postoperative bilateral visual acuity on day 1 was 6/30 and his best-corrected visual acuity 3 months after surgery was 6/9 for both eyes. In conclusion, ophthalmologists play an important role in diagnosing and managing Marfan syndrome. Early diagnosis is important to help preserve vision and improve quality of life.

scholarly journals Pars Plana Lensectomy and Iris-Claw Artisan Intraocular Lens Implantation in Patients with Marfan Syndrome

2021 ◽  
Author(s):  
Saeed Karimi ◽  
Zahra Karjou ◽  
Mohadeseh Yaghoobi ◽  
Homayoun Nikkhah ◽  
Sare Safi
Keyword(s):  
Visual Acuity ◽  
Marfan Syndrome ◽  
Crystalline Lens ◽  
Safe Procedure ◽  
Iol Implantation ◽  
Lens Subluxation ◽  
Pars Plana Lensectomy ◽  
Pars Plana ◽  
The Mean ◽  
Iris Claw

Abstract Purpose: To evaluate the visual and anatomical outcomes of pars plana lensectomy and iris-claw artisan intra-ocular lens (IOL) implantation in the patients with subluxated crystalline lens secondary to Marfan syndrome.Methods: In this retrospective case series, we evaluate the records of all patients with Marfan syndrome and moderate to severe crystalline lens subluxation who underwent pars plana lensectomy/anterior vitrectomy and implantation of iris-claw artisan IOL at referral hospital from September 2015 to October 2019.Results: Twenty-one eyes of fifteen patients (10 males and 5 females) with the mean age of 24.47 ± 19.14 years were included. Mean best-corrected visual acuity was improved from 1.17 ± 0.55 logMAR to 0.64 ± 0.71 logMAR at the final follow-up visit (P <0.001). The mean intraocular pressure did not change significantly (P = 0.971). The final refraction showed a mean sphere of 0.54 ± 2.46 D and a mean cylinder -0.81 ± 1.03 at the mean axis of 57.92 ± 58.33 degrees. One eye developed rhegmatogenous retinal detachment two months after surgery.Conclusion: Pars plana lensectomy and iris-claw artisan IOL implantation seem to be a useful, impressive and safe procedure with a low rate of complications in Marfan patients with moderate to severe crystalline lens subluxation. Visual acuity was significantly improved with the acceptable anatomical and refractive outcomes.

Bilateral Crystalline Lens Subluxation in a Child With Marfan Syndrome

2018 ◽  
Vol 136 (6) ◽  
pp. e180928
Author(s):  
Christina Y. Weng ◽  
Joseph F. Morales ◽  
Zaina Al-Mohtaseb
Keyword(s):  
Marfan Syndrome ◽  
Crystalline Lens ◽  
Lens Subluxation

Can trust become a factor of economic growth? Dynamic changes in the level of trust of Russian youth

2020 ◽  
pp. 92-107 ◽  
Author(s):  
A. I. Bakhtigaraeva ◽  
A. A. Stavinskaya
Keyword(s):  
Institutional Environment ◽  
Negative Effects ◽  
Dynamic Changes ◽  
Generalized Trust ◽  
Level Of Education ◽  
Advantages And Disadvantages ◽  
The Future ◽  
Analysis Of Dynamics

The article considers the role of trust in the economy, the mechanisms of its accumulation and the possibility of using it as one of the growth factors in the future. The advantages and disadvantages of measuring the level of generalized trust using two alternative questions — about trusting people in general and trusting strangers — are analyzed. The results of the analysis of dynamics of the level of generalized trust among Russian youth, obtained within the study of the Institute for National Projects in 10 regions of Russia, are presented. It is shown that there are no significant changes in trust in people in general during the study at university. At the same time, the level of trust in strangers falls, which can negatively affect the level of trust in the country as a whole, and as a result have negative effects on the development of the economy in the future. Possible causes of the observed trends and the role of universities are discussed. Also the question about the connection between the level of education and generalized trust in countries with different quality of the institutional environment is raised.

Data Integrity Techniques in Cloud Computing: An Analysis

2017 ◽  
Vol 7 (8) ◽  
pp. 121 ◽  
Author(s):  
Neha Thakur ◽  
Aman Kumar Sharma
Keyword(s):  
Cloud Computing ◽  
Cloud Storage ◽  
Data Integrity ◽  
Advantages And Disadvantages ◽  
Security Models ◽  
Cloud Storage Service ◽  
Storage Service ◽  
Cloud Users ◽  
It Enterprises

Cloud computing has been envisioned as the definite and concerning solution to the rising storage costs of IT Enterprises. There are many cloud computing initiatives from IT giants such as Google, Amazon, Microsoft, IBM. Integrity monitoring is essential in cloud storage for the same reasons that data integrity is critical for any data centre. Data integrity is defined as the accuracy and consistency of stored data, in absence of any alteration to the data between two updates of a file or record.  In order to ensure the integrity and availability of data in Cloud and enforce the quality of cloud storage service, efficient methods that enable on-demand data correctness verification on behalf of cloud users have to be designed. To overcome data integrity problem, many techniques are proposed under different systems and security models. This paper will focus on some of the integrity proving techniques in detail along with their advantages and disadvantages.

Problems of Distance Education

2018 ◽  
Vol 7 (1) ◽  
pp. 14-23 ◽  
Author(s):  
Rostislav Fojtík
Keyword(s):  
Distance Education ◽  
Distance Learning ◽  
Computer Science ◽  
Full Time ◽  
Advantages And Disadvantages ◽  
E Learning ◽  
Educational Requirements

Abstract Distance learning and e-learning have significantly developed in recent years. It is also due to changing educational requirements, especially for adults. The article aims to show the advantages and disadvantages of distance learning. Examples of the 20-year use of the distance learning form of computer science describe the difficulties associated with the implementation and implementation of this form of teaching. The results of students in the full-time and distance form of teaching in the bachelor’s study of computer science are compared. Long-term findings show that distant students have significantly lower scores in the first years of study than full-time bachelor students. In the following years of study, the differences diminish, and students’ results are comparable. The article describes the possibilities of improving the quality of distance learning.

scholarly journals Systematic Analysis of Literature on the Marketing of Healthcare Systems. Challenges for Russian and Romanian Healthcare Systems

Healthcare ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 656
Author(s):  
Vladimir Bulatnikov ◽  
Cristinel Petrişor Constantin
Keyword(s):  
Quality Of Healthcare ◽  
Healthcare Systems ◽  
Business Environment ◽  
Competitive Advantages ◽  
Systematic Analysis ◽  
Scientific Databases ◽  
Advantages And Disadvantages ◽  
Funds Allocation ◽  
New Perspective

This paper aims at finding the most dominant ideas about the marketing of healthcare systems highlighted in the mainstream literature, with a focus on Russia and Romania. To reach this goal, a systematic analysis of literature was conducted and various competitive advantages and disadvantages of the medical models that require special attention from the governments are considered. In this respect we examined 106 papers published during 2006 to 2020 found on four scientific databases. They were selected using inclusion and exclusion criteria according to PRISMA methodology. The main findings of the research consist of the opportunity to use marketing tools in order to improve the quality of healthcare systems in the named countries. Thus, using market orientation, the managers of healthcare systems could stimulate the innovation, the efficiency of funds allocation and the quality of medical services. The results will lead to a better quality of population life and to an increasing of life expectancy. As this paper reviews some articles from Russian literature, it can add a new perspective to the topic. These outcomes have implications for government, business environment, and academia, which should cooperate in order to develop the healthcare system using marketing strategies.

Outcomes of three surgical approaches for managing ectopia lentis in Marfan syndrome

2021 ◽  
pp. 112067212199295
Author(s):  
Gurkan Erdogan ◽  
Nilay Kandemir Besek ◽  
Betul Onal Gunay ◽  
Alper Agca
Keyword(s):  
Marfan Syndrome ◽  
Crystalline Lens ◽  
Surgical Approaches ◽  
Posterior Chamber ◽  
Ectopia Lentis ◽  
Iol Implantation ◽  
Capsular Tension Ring ◽  
Group 3 ◽  
Group 2 ◽  
Group 1

Objective: To investigate the clinical outcomes of three surgical approaches for ectopia lentis in Marfan syndrome (MS) patients who had undergone crystalline lens removal with posterior chamber intraocular lens (IOL) implantation techniques comprising the intrascleral fixation of IOL, sutured scleral fixation of IOL, and IOL implantation with the use of a Cionni capsular tension ring (CTR). Methods: This is a retrospective comparative study, including 35 eyes of 21 patients who underwent the intrascleral fixation of IOL (group 1), scleral IOL fixation with the Z-suture (group 2), and IOL implantation with the use of a Cionni CTR (group 3) following crystalline lens removal. The surgical indications were as follows: no improvement in visual function after eyeglasses or contact lens application due to excessive irregular astigmatism and advanced crystalline lens decentration in which the edge of the crystalline lens came up to the optical axis, or dislocation of the crystalline lens resulting in aphakia and secondary glaucoma due to lens dislocation. The surgical outcomes and complications due to surgery were compared between the groups. Results: The mean age of the patients in the study was 12.3 ± 8.7 years (5–32 years). There were 10 eyes in group 1, 13 eyes in group 2, and 12 eyes in group 3. Visual acuity improved significantly in each group after surgery. Ocular residual astigmatism did not differ significantly between the groups ( p = 0.51). Conclusion: There were no significant differences between the three surgical approaches in the current study in terms of the postoperative results and complications.

scholarly journals Adjuvant Radiotherapy after Surgical Excision in Keloids

Medicina ◽  
2021 ◽  
Vol 57 (7) ◽  
pp. 730
Author(s):  
Jeong Won Lee ◽  
Ki Ho Seol
Keyword(s):  
Quality Of Life ◽  
Side Effects ◽  
Adjuvant Therapy ◽  
Local Control ◽  
Adjuvant Radiotherapy ◽  
Surgical Excision ◽  
Recurrence Rates ◽  
High Tendency ◽  
Advantages And Disadvantages

Keloids are a benign fibroproliferative disease with a high tendency of recurrence. Keloids cause functional impairment, disfigurement, pruritus, and low quality of life. Many therapeutic options have been used for keloids. However, the high recurrence rates have led to the use of adjuvant therapy after surgical keloid excision. There are different radiotherapy regimens available, and the advantages and disadvantages of each are still unclear. The aim of this review is to explain the appropriate radiotherapy regimen for keloids as well as discuss the recent reports on keloid management with radiotherapy. Adjuvant radiotherapy after surgical excision for keloids yields excellent local control with tolerable side effects. Hypofractionated radiotherapy with a BED of more than 28 Gy (α/β value of 10) after excision is recommended in the light of its biologic background.

Is digital always better? Comparing two English print dictionaries with their digital counterparts

2020 ◽  
Author(s):  
Emma Ferrett ◽  
Stefan Dollinger
Keyword(s):  
Social Media ◽  
Mobile App ◽  
User Friendliness ◽  
Digital Medium ◽  
Advantages And Disadvantages ◽  
Oxford University ◽  
Relevant Question ◽  
Market Leader ◽  
Oxford University Press

Abstract In this paper we discuss advantages and disadvantages of e-dictionaries over print dictionaries in order to answer one increasingly relevant question: is digital always better? We compare the e-content from Oxford University Press and Merriam-Webster flagship dictionaries against their most recent print counterparts. The resulting data shows that the move from print to digital, against popular perception, results in a loss of lexicographical detail and scope. After assessing the user-friendliness of the e-dictionaries’ sites in both desktop and mobile app formats, we conclude that Merriam-Webster currently utilizes the digital medium somewhat better, while Oxford University Press is the current market leader in collaborations with tech giants such as Google. Most crucially, however, both companies have yet to devise and implement optimal ways to balance advertising noise and lexicographical content. Finally, we compare the virtual popularity of e-dictionaries according to their social media efforts and product partnerships. The greatest problem e-dictionaries currently face is that content does routinely change in unspecified and even undocumented ways. Despite these significant disadvantages, the convenience of mobile online accessibility appears to outweigh the concern with the reliability and quality of content.

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