National survey of paediatric vision screening programs across Canada: Identifying major gaps and call to action

Author(s):  
Yasmin Jindani ◽  
Dallas Nash ◽  
Natalie Fleming ◽  
Kourosh Sabri

Abstract Objective Paediatric vision screening programs identify children with ocular abnormalities who would benefit from treatment by an eye care professional. A questionnaire was conducted to assess existence and uptake of school-based vision screening programs across Canada. A supplementary questionnaire was distributed among Ontario’s public health units to determine implementation of government mandated vision screening for senior kindergarten children. Methods Chief Medical Officers of Health for each province and territory, and Ontario’s thirty-four public health units were sent a questionnaire to determine: 1) whether school-based vision screening is being implemented; 2) what age groups are screened; 3) personnel used for vision screening; 4) the type of training provided for vision screening personnel; and 5) vision screening tests performed. Results Of the thirteen provinces/territories in Canada, six perform some form of school-based vision screening. Two provinces rely solely on non-school-based programs offering eligible children an eye examination by an optometrist and three rely on ocular assessment conducted by a nurse at well-child visits. In Ontario, where since 2018 vision screening for all senior kindergarten students is government mandated, only seventeen public health jurisdictions are implementing universal vision screening programs using a variety of personnel ranging from food safety workers to optometrists. Conclusion Good vision is key to physical and emotional development. There is an urgent need for a universal, evidence-based and cost-effective multidisciplinary approach to standardize paediatric vision screening across Canada and break down barriers preventing children from accessing eye care.

2021 ◽  
pp. 1-7
Author(s):  
Salam Chettian Kandi ◽  
Hayat Ahmad Khan

<b><i>Introduction:</i></b> Uncorrected refractive errors and amblyopia pose a major problem affecting schoolchildren. We had previously observed that many schoolchildren in the Hatta region presented to the ophthalmology clinic with uncorrected refractive errors and amblyopia, which led us to undertake this research. As per the WHO, the term “visual impairment” can be “low vision” or “blindness.” Based on the presenting vision, “low vision” is defined for children who have vision of &#x3c;6/18 to 3/60 or having visual field loss to &#x3c;20° in the better-seeing eye. Children defined to have “blindness” have presenting vision of &#x3c;3/60 or corresponding visual field of &#x3c;10°. <b><i>Purpose:</i></b> To estimate the magnitude of uncorrected refractive errors and amblyopia among the schoolchildren aged 6–19 years and to assess the efficacy of school-based refractive error screening programs in the Hatta region of the United Arab Emirates. <b><i>Methods:</i></b> An epidemiological, cross-sectional, descriptive study was conducted on the entire student population studying in the government schools of the region. Those who failed the Snellen visual acuity chart test and those who were wearing spectacles were evaluated comprehensively by the researcher in the Department of Ophthalmology of the Hatta Hospital. Data were entered in the Refractive Error Study in School Children (RESC) eye examination form recommended by the WHO, and were later transferred to Excel sheets and analyzed by SPSS. <b><i>Results:</i></b> 1,591 students were screened and evaluated from the end of 2016 to mid-2017. About 21.37% (<i>n</i> = 340) had impaired vision with 20.9% (<i>n</i> = 333) refractive errors, of which 58% were uncorrected. Among the refractive error group, 19% (64 subjects) had amblyopia (4% of total students). The incidence of low vision was 9.5% and blindness was 0.38%. Low vision was found to be 9.5% and blindness 0.38%, taking in to account presenting visual acuity rather than best-corrected visual acuity for defining low vision and blindness. <b><i>Conclusion:</i></b> A significant number of students were detected to have uncorrected refractive errors among the vision impaired group (59%, <i>n</i> = 197) despite a school-based vision screening program in place. Seventy-eight percent of the amblyopia cases (<i>n</i> = 50) were found to be in the 11–19 years age group. Noncompliance with optical corrections was the reason for the high number of cases. A rigorous vision screening program and refractive services, complimented with awareness among parents and teachers, are recommended.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Stevens Bechange ◽  
Munazza Gillani ◽  
Emma Jolley ◽  
Robina Iqbal ◽  
Leena Ahmed ◽  
...  

Abstract Background Visual impairment in children is a significant public health problem affecting millions of children globally. Many eye problems experienced by children can be easily diagnosed and treated. We conducted a qualitative study with teachers and optometrists involved in a school-based vision screening programme in Quetta district of Pakistan to explore their experiences of training, vision screening and referrals and to identify factors impacting on the effectiveness of the programme. Methods Between April 2018 and June 2018, we conducted semi-structured in-depth interviews with 14 teachers from eight purposefully selected schools with high rates of inaccurate (false positive) referrals. Interviews were also conducted with three optometrists from a not-for profit private eye care hospital that had trained the teachers. Interviews were audio recorded and professionally transcribed. NVIVO software version 12 was used to code and thematically analyze the data. Results Findings suggest that the importance of school-based vision screening was well understood and appreciated by the teachers and optometrists. Most participants felt that there was a strong level of support for the vision screening programme within the participating schools. However, there were a number of operational issues undermining the quality of screening. Eight teachers felt that the duration of the training was insufficient; the training was rushed; six teachers said that the procedures were not sufficiently explained, and the teachers had no time to practice. The screening protocol was not always followed by the teachers. Additionally, many teachers reported being overburdened with other work, which affected both their levels of participation in the training and the time they spent on the screening. Conclusions School-based vision screening by teachers is a cost-effective strategy to detect and treat children’s vision impairment early on. In the programme reviewed here however, a significant number of teachers over referred children to ophthalmic services, overwhelming their capacity and undermining the efficiency of the approach. To maximise the effectiveness and efficiency of school-based screening, future initiatives should give sufficient attention to the duration of the teacher training, experience of trainers, support supervision, refresher trainings, regular use of the screening guidelines, and the workload and motivation of those trained.


2019 ◽  
Vol 35 (S1) ◽  
pp. 48-48
Author(s):  
Leonor Varela-Lema ◽  
Janet Puñal-Riobóo ◽  
Paula Cantero-Muñoz ◽  
Maria José Faraldo-Vallés

IntroductionDecision making regarding national population-based prenatal and newborn screening policies is recognized to be highly challenging. This paper aims to describe the formalized collaboration that has been established between the Spanish National Public Health Screening Advisory Committee (PHSAC) and the Spanish Network of Health Technology Assessment (HTA) agencies to support the development of evidence- and consensus-based recommendations to support this process.MethodsIn-depth description and analysis of the strategic and methodological processes that have been implemented within the Spanish National Health System prenatal and newborn screening frameworks, with special emphasis on the role, actions, and responsibilities of HTA agencies.ResultsThe role of HTA agencies is threefold: (i) support the PHSAC by providing evidence on safety, effectiveness and cost/effectiveness of the screening tests/strategies, as well as contextualized information regarding costs, organizational, social, legal and ethical issues; (ii) collaborate with the PHSAC in the development of formal evidence- and consensus-based recommendations for defining population screening programs, when required; (iii) analyze real-world data that is generated by piloted programs. This paper will provide real-life examples of how these processes were implemented in practice, with a special focus on the development of the non-invasive prenatal testing (NIPT) policy. Recommendations for NIPT were developed by a multidisciplinary group based on the European network for Health Technology Assessment (EUnetHTA) rapid assessment report and the predictive models that were built using national statistics and other contextualized data.ConclusionsThe current work represents an innovative approach for prenatal and newborn screening policymaking, which are commonly difficult to evaluate due to the low quality of evidence and the confounding public health issues. The paper raises awareness regarding the importance of joint collaborations in areas where evidence is commonly insufficient for decision making.


2018 ◽  
Vol 77 (1) ◽  
Author(s):  
Ingrid T. Metsing ◽  
Wanda Jacobs ◽  
Rekha Hansraj

Background: What constitutes an appropriate vision screening protocol is controversial, because the tests or methods are expected to be cost-effective, expedient and easy but efficient in detecting visual anomalies among children.Aim: This review intends to compare the different vision screening tests for children and methods in the interest of identifying the most effective screening method from the standpoint of validity, public acceptance, expediency and cost.Method: The literature search was performed for this review using the Medline, Science Direct and EBSCOhost databases. The search terms used were vision screening methods or tests, children’s vision screenings, computer software programs and vision screening instruments. The inclusion criteria for the articles reviewed were all types of articles related to vision screening methods. The exclusion criteria were all articles for which full text was not available and those not available in English. Eighty articles were analysed, of which 33 were found to have complied with the inclusion criteria and were selected. From the first round of articles retrieved, additional references were identified by a manual search among the cited references.Results: Evidence from the literature reviewed demonstrated that the conventional vision screening method (isolated and combination tests) is the method commonly used to detect a range of relevant visual anomalies among the schoolgoing age group (≥ 6 years) and drew attention to the need for training of vision screening personnel. However, in addition to the conventional method, other vision screening methods include instruments as an adjunct for screening preschoolers and those difficult to screen (≤ 6 years).Conclusion: Inconsistencies in what constitutes an appropriate vision screening method still exist, especially with the booming market of using computer software programs, which still needs to be validated.


1987 ◽  
Vol 81 (4) ◽  
pp. 166-167
Author(s):  
B. A. McEwen

In areas where large-scale, public vision screening is nonexistent or limited, the private agency for blind people should consider providing one or more vision screening services. The Sight Center became involved in such a program in 1966, and for 20 years has found it to be quite cost-effective while providing a valuable service throughout the service territory. Our experience demonstrates that a sight conservation program creates a large reservoir of goodwill in the community by involving volunteers, identifying individuals with potential vision problems and, in many cases, helping prevent those people from becoming blind. Screenings are needed by all age groups—preschool, school-age, adults and the elderly.


2021 ◽  
Vol 5 (10) ◽  
pp. 916-925
Author(s):  
Patiyus Agustiansyah ◽  
Rizal Sanif ◽  
Siti Nurmaini ◽  
Irfannuddin ◽  
Legiran

Screening is a public health intervention administered to a target population without symptoms. Screening is not performed to diagnose a disease, but to identify individuals with a higher likelihood of developing the disease itself or a precursor to the disease. Not all diseases are suitable for screening programs. The following criteria help determine whether a disease is suitable for a screening program: (1) The disease is bound to have serious consequences. (2) The disease must have a detectable preclinical and asymptomatic stage. (3) Treatment at the preclinical stage should influence the long-term course and prognosis of the disease being screened. (4) Care must be available and accessible to those who have a positive screening test. History, screening tests and treatment options for cervical pre-cancer meet these criteria.


2013 ◽  
Vol 02 (04) ◽  
pp. 193-197 ◽  
Author(s):  
Sudeep Gupta ◽  
Rajendra A. Kerkar ◽  
Rajesh Dikshit ◽  
Rajendra A. Badwe

AbstractTwo vaccines that protect against infection by some of the oncogenic human papillomavirus (HPV) subtypes have recently been licensed for use in population-based vaccination strategies in many countries. However, these products are being promoted as ‘cervical cancer vaccines’ based on inadequate data. Specifically, there remain several concerns about the duration of immunogenicity, length of follow-up of trial subjects, endpoints chosen in vaccine trials, applicability of trial results to real populations, the safety of these products, and their cost-effectiveness as public health interventions. Furthermore, it is unlikely that vaccination will obviate the need for setting up robust and cost-effective screening programs in countries like India. This article will discuss various aspects of HPV vaccination from a public health perspective, especially from the point of view of its relevance to India and other South Asian countries.


2021 ◽  
Author(s):  
Will Rogers ◽  
Manuel Ruiz-Aravena ◽  
Dale Hansen ◽  
Wyatt Madden ◽  
Maureen Kessler ◽  
...  

AbstractSARS-CoV-2 spreads quickly in dense populations, with serious implications for universities, workplaces, and other settings where exposure reduction practices are difficult to implement. Rapid screening has been proposed as a tool to slow the spread of the virus; however, many commonly used diagnostic tests (e.g., RT-qPCR) are expensive, difficult to deploy (e.g., require a nasopharyngeal specimen), and have extended turn-around times. We evaluated testing regimes that combined diagnostic testing using qPCR with high-frequency screening using a novel reverse-transcription loop-mediated isothermal amplification (RT-LAMP, herein LAMP) assay. We used a compartmental susceptible-exposed-infectious-recovered (SEIR) model to simulate screening of a university population. We also developed a Shiny application to allow administrators and public health professionals to develop optimal testing strategies given site-specific assumptions about testing investment, target population, and cost. The frequency of screening, especially when pooling samples, was more important for minimizing epidemic size than test sensitivity, behavioral compliance, contact tracing capacity, and time between testing and results. Our results suggest that when testing budgets are limited, it is safer and more cost-effective to allocate the majority of funds to screening. Rapid, cost-effective, and scalable screening tests, like LAMP, should be viewed as critical components of SARS-CoV-2 testing in high-density populations.


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