scholarly journals Visual outcomes and intraoperative complications of small incision cataract surgery performed by junior residents in GMC

2022 ◽  
Vol 7 (4) ◽  
pp. 687-690
Author(s):  
Vishaka Naik ◽  
Ugam P .S Usgaonkar
Keyword(s):  
Intraoperative Complications ◽  
Ophthalmological Examination ◽  
Small Incision Cataract Surgery ◽  
Supervised Training ◽  
Department Of Ophthalmology ◽  
Peribulbar Anesthesia ◽  
Low Levels ◽  
Junior Residents ◽  
Anterior Capsulotomy ◽  
Better Than

To evaluate in intraoperative complications of MSICS performed by Junior Residents and to compare the incidences of major complications in the first six months of training versus last six months of training.It is a retrospective type of study. From March 2018 to February 2019 a total of 293 manual SICS were conducted by the Junior Residents in Department of Ophthalmology. Each of the patients underwent a detailed ophthalmological examination preoperatively and underwent MSICS under peribulbar anesthesia. Consents for surgeries were obtained from each patient.Following intraoperative complications were noted: tunnel related complications, capsulorrhexis related complications, Iridodialysis, posterior capsular rent, zonular dialysis, vitreous leak, surgical aphakia, Descemet membrane detachment, placement of ACIOL, Nucleus drop and IOL drop. The patient’s immediate postoperative vision was also noted. SPSS version 15.0.Tunnel related complications were found in 13.98% patients either as scleral button holing or premature entry. Posterior capsular rents and bag disinsertion were found in total of 11.94% patients owing to which 3.07% were left aphakic. 63.13% patients had visual acuity better than 6/12 by snellens chart on first postoperative day. Performance of adequate anterior capsulotomy, minimal handling of the cornea and avoidance of posterior capsular rent are some of the challenges faced by the residents while learning MSICS. Stepwise supervised training can help a resident doctor master these steps while keeping the complications at acceptably low levels. Stepwise supervised training of residents performing MSICS can minimize complications

scholarly journals Predictive value of retinal function by the Purkinje test in patients scheduled for cataract surgery in Kinshasa, DR Congo

2021 ◽  
Vol 14 (9) ◽  
pp. 1392-1395
Author(s):  
Serge Dinkulu ◽  
◽  
Edith Mukwanseke ◽  
Longo Flavien Lutete ◽  
Adrian Hopkins ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Care Center ◽  
Preoperative Assessment ◽  
Retinal Function ◽  
Ophthalmological Examination ◽  
Dr Congo ◽  
Small Incision Cataract Surgery ◽  
Sub Saharan ◽  
Better Than

AIM: To assess the retinal function in patients with dense cataracts in resource poor settings in Kinshasa, DR Congo. METHODS: In a tertiary eye care center, the Purkinje entoptic test was performed as part of the ophthalmological examination in 98 eyes in patients with cataract, using a penlight. Totally 92 cataract patients including 86 patients suffered from unilateral and 6 from bilateral cataracts were included in the study. The investigator asked the patients about their perception of the vascular pattern most commonly described as a leafless or dead tree. Visual acuity≥6/60 was considered an indication of good visual function and visual acuity<6/60 of poor function. Following small incision cataract surgery, best corrected visual acuity (BCVA) was determined and compared with the preoperative findings. RESULTS: Out of 98 eyes, there were 80 (81.6%) where the Purkinje entoptic phenomenon was reported by the patients. After cataract surgery, out of the 80 eyes, there were 75 (93.8%) with a BCVA of better than 6/60, whereas in 5 eyes (6.2%), BCVA was 6/60 or less. Out of the 18 eyes (18.4%) where no Purkinje tree was recognized, there were 14 (77.8%) with BCVA of better than 6/60, whereas in 4 (22.2%) BCVA was 6/60 or less. CONCLUSION: The Purkinje entoptic test is successfully used for preoperative assessment of retinal function in patients with dense cataract. However, further investigation and refinement of the test is necessary to validate the method for use in sub-Saharan conditions.

EFFECTS OF LANGUAGE AND PRIOR KNOWLEDGE LEVELS ON HYPERTEXT READING COMPREHENSION

2020 ◽  
Author(s):  
Kshema Jose
Keyword(s):  
Reading Comprehension ◽  
Prior Knowledge ◽  
Language Proficiency ◽  
Language Competence ◽  
Additional Information ◽  
Reading Order ◽  
Low Levels ◽  
Online Texts ◽  
Characteristic Features ◽  
Better Than

<p>This study observed how two hypertext features – absence of a linear or author-specified order and availability of multiple reading aids – influence reading comprehension processes of ESL readers. Studies with native or highly proficient users of English, have suggested that readers reading hypertexts comprehend better than readers reading print texts. This was attributed to (i) presence of hyperlinks that provide access to additional information that can potentially help overcome comprehension obstacles and (ii) the absence of an author-imposed reading order that helps readers exercise cognitive flexibility. An aspect that remains largely un-researched is how well readers with low language competence comprehend hypertexts. This research sought to initiate research in the area by exploring the question: Do all ESL readers comprehend a hypertext better than a print text?</p> <p>Keeping in mind the fact that a majority of readers reading online texts in English can be hindered by three types of comprehension deficits – low levels of language proficiency, non-availability of prior knowledge, or both – this study investigated how two characteristic features of hypertext, viz., linking to additional information and non-linearity in presentation of information, affect reading comprehension of ESL readers. </p> <p>Two types of texts that occur in the electronic medium – linear or pre-structured texts and non-linear or self-navigating texts, were used in this study. Based on a comparison of subjects’ comprehension outcomes and free recalls, text factors and reader factors that can influence hypertext reading comprehension of ESL readers are identified. </p> Contradictory to what many researchers believe, results indicate that self-navigating hypertexts might not promote deep comprehension in all ESL readers.

Evaluation of Gas-Liquid Chromatography in Assays for Blood Volatiles

1965 ◽  
Vol 11 (11) ◽  
pp. 1023-1035 ◽  
Author(s):  
Alan Mather ◽  
Angel Assimos
Keyword(s):  
Liquid Chromatography ◽  
Alcohol Concentration ◽  
Quantitative Assay ◽  
Gas Liquid Chromatography ◽  
Internal Reference ◽  
Detection And Identification ◽  
Large Populations ◽  
The Common ◽  
Low Levels ◽  
Better Than

Abstract A simple screening by gas-liquid chromatography (GLC) can provide definitive answers in the detection and identification of a number of volatile substances, including acetone and the common alcohols. After identification, quantitative assay by an internal-reference technic yields highly specific values for ethyl alcohol concentration with a precision at least equal to (and for low levels, better than) that of conventional assays. The unique advantage of GLC is in its simultaneous quantitative assay of mixtures, some of which cannot be satisfactorily assayed or even recognized in any other way. The combination of speed and negligible sample volumes render the technic valuable for sequential studies on capillary blood samples and, potentially, for mass screening of large populations.

The use of hollow sphere pigments as strength additives in paper and paperboard coatings—Part 1: The predictive nature of packing models on coating properties

TAPPI Journal ◽  
2020 ◽  
Vol 19 (11) ◽  
pp. 585-593
Author(s):  
ETHAN GLOR ◽  
BRIAN EINSLA ◽  
JOHN ROPER ◽  
JIAN YANG ◽  
VALERIY GINZBURG
Keyword(s):  
Particle Size ◽  
Hollow Sphere ◽  
Particle Packing ◽  
Particle Sizes ◽  
Coating Properties ◽  
Ideal System ◽  
Thermal Paper ◽  
Effect Of Particle Size ◽  
Low Levels ◽  
Better Than

Hollow sphere pigments (HSPs) are widely used at low levels in coated paper to increase coating bulk and to provide gloss to the final sheet. However, HSPs also provide an ideal system through which one can examine the effect of pigment size and particle packing within a coating due to their unimodal and tunable particle sizes. The work presented in Part 1 and Part 2 of this study will discuss the use of blends of traditional inorganic pigments and HSPs in coating formulations across a variety of applications for improved coating strength. Part 1 of this study focuses on the theory of bimodal spherical packing and demonstrates the predictive nature of packing models on the properties of coating systems containing HSPs of two different sizes. This study also examines conditions where the model fails by examining the effect of particle size on coating strength in sytems like thermal paper basecoats where the non-HSP component has a broad particle size distribution, and how these surprising trends can be used to generate better-than-expected thermal printing performance in systems with low HSP/clay ratios. Part 2 of this study focuses on the incorporation of HSPs of different particle sizes into paperboard formulations to affect coating strength and opacity.

La competencia motriz en estudiantes chilenos de 3° y 4° de educación básica. Aprendizajes esperados versus realidad (Motor competence in Chilean students in 3rd and 4th grade of primary school. Expected learning versus reality)

Retos ◽  
2021 ◽  
Vol 44 ◽  
pp. 515-524
Author(s):  
Daniel Rodríguez-Briceño ◽  
Felipe Castro-Vilugron ◽  
Mauricio Díaz-Alvarado ◽  
Jaime Carcamo Oyarzun
Keyword(s):  
Motor Performance ◽  
Fourth Grade ◽  
Learning Objectives ◽  
Motor Competence ◽  
Object Control ◽  
Third Grade Students ◽  
Fourth Grade Students ◽  
Low Levels ◽  
And Gender ◽  
Better Than

  Este estudio busca determinar los niveles de competencia motriz de estudiantes chilenos y las posibles diferencias en función del grado y del sexo. Participaron 377 estudiantes (37.7% niñas) de tercer y cuarto básico. La competencia motriz fue evaluada a través del test MOBAK 3-4. Se encontraron bajos niveles de competencia motriz. Los estudiantes de cuarto grado presentan un mejor desempeño motriz que los de tercero. Los niños presentan un mayor desempeño que las niñas en control de objetos, mientras que las niñas obtienen puntajes más altos que los niños en control del cuerpo, aunque con un tamaño del efecto irrelevante. Al contrastar estos resultados con los objetivos del currículum, muchos estudiantes no alcanzan los aprendizajes esperados, siendo necesario poner mayor énfasis en el fomento de la competencia motriz.  Abstract. This study aims to determine the levels of motor competence of Chilean students and possible differences according to grade and gender. 377 students (37.7% girls) of the third and fourth grade participated in the study. Motor competence was evaluated through the MOBAK 3-4 test. Low levels of motor competence were found. Fourth grade students showed a better motor performance than third grade students. Boys performed better than girls in object control, while girls scored higher than boys in self-movement, although with an irrelevant effect size. When these results are contrasted with the learning objectives stipulated in the curriculum, many students do not achieve the expected skills, what makes it necessary to place greater emphasis on the promotion of motor competence.

scholarly journals Comparison of peribulbar anesthesia and topical anesthesia on outcome of phacoemulsification

2017 ◽  
Vol 5 (6) ◽  
pp. 2608 ◽  
Author(s):  
Rishi Mehta ◽  
Sharda Punjabi ◽  
Nutan Bedi ◽  
Chandra Kant Nagar
Keyword(s):  
Intraoperative Complications ◽  
Visual Outcome ◽  
Topical Anesthesia ◽  
Satisfaction Score ◽  
The Other ◽  
Patients Satisfaction ◽  
Peribulbar Anesthesia ◽  
Group 2 ◽  
A Prospective Study ◽  
Group 1

Background: Due to advancement in phacoemulsification techniques, there has been growing shift from peribulbar anesthesia (PA) to topical anesthesia (TA). But dilemma exists regarding the supremacy of one over the other as both types have certain advantages and disadvantages.Methods: A prospective study was conducted. Patients were divided into two groups. Group-1 underwent PA while group-2 underwent TA. Satisfaction score of patients and surgeons and incidence of complications were noted. The data was analyzed.Results: Lowest patients’ satisfaction score among group-1 vs. group-2 was 160 (87.9%) vs.82 (45.81%). Highest surgeons satisfaction score among group-1 and group-2 was 74(40.65%) vs. 2(1.1%). Intraoperative complications among the group-1 and group-2 were 35 (19.2%) vs. 86(48.0%).Conclusions: While TA provides initial painless phase of surgical procedure, PA results in lesser intraoperative complications resulting in better visual outcome.

scholarly journals Evaluation of Distributed Collaborative Adaptive Sensing for Detection of Low-Level Circulations and Implications for Severe Weather Warning Operations

2010 ◽  
Vol 25 (1) ◽  
pp. 173-189 ◽  
Author(s):  
J. Brotzge ◽  
K. Hondl ◽  
B. Philips ◽  
L. Lemon ◽  
E. J. Bass ◽  
...  
Keyword(s):  
Severe Weather ◽  
Special Focus ◽  
Test Bed ◽  
Scanning Strategy ◽  
Engineering Research ◽  
Low Level ◽  
Adaptive Sensing ◽  
Low Levels ◽  
Casa System ◽  
Better Than

Abstract The Center for Collaborative Adaptive Sensing of the Atmosphere (CASA) is a multiyear engineering research center established by the National Science Foundation for the development of small, inexpensive, low-power radars designed to improve the scanning of the lowest levels (&lt;3 km AGL) of the atmosphere. Instead of sensing autonomously, CASA radars are designed to operate as a network, collectively adapting to the changing needs of end users and the environment; this network approach to scanning is known as distributed collaborative adaptive sensing (DCAS). DCAS optimizes the low-level volume coverage scanning and maximizes the utility of each scanning cycle. A test bed of four prototype CASA radars was deployed in southwestern Oklahoma in 2006 and operated continuously while in DCAS mode from March through June of 2007. This paper analyzes three convective events observed during April–May 2007, during CASA’s intense operation period (IOP), with a special focus on evaluating the benefits and weaknesses of CASA radar system deployment and DCAS scanning strategy of detecting and tracking low-level circulations. Data collected from nearby Weather Surveillance Radar-1988 Doppler (WSR-88D) and CASA radars are compared for mesoscyclones, misocyclones, and low-level vortices. Initial results indicate that the dense, overlapping coverage at low levels provided by the CASA radars and the high temporal (60 s) resolution provided by DCAS give forecasters more detailed feature continuity and tracking. Moreover, the CASA system is able to resolve a whole class of circulations—misocyclones—far better than the WSR-88Ds. In fact, many of these are probably missed completely by the WSR-88D. The impacts of this increased detail on severe weather warnings are under investigation. Ongoing efforts include enhancing the DCAS data quality and scanning strategy, improving the DCAS data visualization, and developing a robust infrastructure to better support forecast and warning operations.

InstantLabs®Salmonella Species Detection Method: Matrix Extension

2014 ◽  
Vol 97 (6) ◽  
pp. 1585-1591
Author(s):  
Neil Sharma ◽  
Lauren Bambusch ◽  
Thu Le ◽  
Amit Morey ◽  
Melinda Hayman ◽  
...  
Keyword(s):  
Ground Beef ◽  
Reference Method ◽  
Test Method ◽  
Chicken Breast ◽  
Escherichia Coli O157 ◽  
Test Portion ◽  
Screen Result ◽  
Low Levels ◽  
Matrix Extension ◽  
Better Than

Abstract The performance of InstantLabs®Salmonella Species Food Safety Kit to detect Salmonella in four food matrixes was validated against the International Organization for Standardization (ISO) reference method 6579:2002. The matrixes (raw ground beef, raw chicken breast, raw ground chicken, and lettuce) were inoculated with low levels of Salmonella (&lt;1 CFU/test portion) to generate fractional positives (5–15) in 20 inoculated samples. These matrixes were co-inoculated with Escherichia coli O157:H7 at two to five times the level of Salmonella. Samples were validated using 375 g (meat) or 25 g (lettuce and poultry) test portions enriched in FASTGRO™ SE at 42 ± 1°C for 12 h and 10 h, respectively. All samples were confirmed using the ISO reference method, regardless of initial screen result. The InstantLabs test method was shown to perform as well as or better than the reference method for the detection of Salmonella species in ground beef, chicken breast, ground chicken, and lettuce. Inclusivity and exclusivity testing revealed no false negatives among the 100 Salmonella serovars and no false positives among the 30 non-Salmonella species examined, respectively.

scholarly journals Development and Validation of a High Sensitivity Assay for Measuring p217 + tau in Cerebrospinal Fluid

2020 ◽  
Vol 77 (4) ◽  
pp. 1417-1430
Author(s):  
Gallen Triana-Baltzer ◽  
Kristof Van Kolen ◽  
Clara Theunis ◽  
Setareh Moughadam ◽  
Randy Slemmon ◽  
...  
Keyword(s):  
Cerebrospinal Fluid ◽  
Amyloid Β ◽  
High Sensitivity ◽  
Csf Biomarkers ◽  
Highly Sensitive ◽  
Good Potential ◽  
Low Levels ◽  
Good Differentiation ◽  
Development And Validation ◽  
Better Than

Background: Early and accurate detection and staging is critical to managing Alzheimer’s disease (AD) and supporting clinical trials. Cerebrospinal fluid (CSF) biomarkers for amyloid-β peptides, tau species, and various neurodegenerative and inflammatory analytes are leading the way in this regard, yet there is room for improved sensitivity and specificity. In particular tau is known to be present in many different fragments, conformations, and post-translationally modified forms. While the exact tau species that might best reflect AD pathology is unknown, a growing body of evidence suggests that forms with high levels of phosphorylation in the mid-region may be especially enriched in AD. Objective: Develop an assay for measuring p217tau in CSF. Methods: Here we describe the development and validation of a novel sELISA for measuring CSF tau species containing phosphorylation at threonines 212 & 217, aka p217 + tau, using the PT3 antibody. Results: While the analyte is present at extremely low levels the assay is sufficiently sensitive and specific to quantitate p217 + tau with excellent precision, accuracy, and dilution linearity, allowing good differentiation between diagnostic subgroups. The p217 + tau measurements appear to track AD pathology better than the commonly used p181tau epitope, suggesting superior diagnostic and staging performance. Finally, the assay can also be configured to differentiate antibody-bound versus antibody-free tau, and therefore can be used to measure target engagement by p217 + tau-targeting immunotherapeutics. Conclusion: The assay for measuring p217 + tau described here is highly sensitive, accurate, precise, dilution linear, and shows good potential for identifying and staging AD.

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