Oculomotor Rehabilitation Improves Reading Abilities in Dyslexic Children With Concurrent Eye Movement Abnormalities.

The oculomotor abnormalities have been reported in some dyslexic children. The purpose of the study was to evaluate the effects of oculomotor rehabilitation on the reading performance of dyslexic children. Subjects were 50 dyslexic children. Those with oculomotor abnormalities (n = 30) were randomly assigned into 2 groups matched for age. The case group received oculomotor rehabilitation. The rehabilitation program consists of 3 different exercises. The reading and dyslexia tests were performed before and after the intervention. The correct scores of reading tests in the case group posttest increased significantly compared with the control group, and there is a significant difference between the two groups (P = .001). The positive effects of oculomotor rehabilitation on the reading performance of dyslexic children confirmed that the oculomotor program could be a practical tool for improving reading performance in dyslexic children.

A review on the impacts of COVID-19 on the auditory system: Implications for public health promotion research.

Background: Currently, there are few studies on the relationship between COVID-19 and the auditory system. In the current study, a review of the studies conducted in the fields of etiopathology, clinical manifestations, research, and treatment of hearing loss caused byCOVID-19 was conducted, which can be used as a baseline for future studies. Methods: We utilized the research approach suggested by Arksey and O'Malley to carry out this scoping review. Search was conducted in Farsi and English with a focus on the onset of hearing loss in patients with COVID-19 through Medline and PubMed, and Google Scholar search engine. Studies included were those involving adult patients diagnosed with COVID-19 who experienced hearing loss, ear pain, ear discharge, and otitis media. Studies were eligible for inclusion if there was a description of the otologic dysfunction, specifically onset, duration, or clinical outcomes. Results: Among 90 studies identified, 35 studies were included in the review process. Our findings suggest several possible mechanisms for sudden sensorineural hearing loss (SSNHL) in COVID-19 patients, and COVID-19 infection could have deleterious effects on the inner ear, specifically on the hair cells of the cochlea despite patients being asymptomatic and early identification of SSNHL in COVID-19patients can save the hearing and also patient. Conclusion: Hearing loss in COVID-19 infection has not received much attention by health care professionals. Sensorineural hearing loss (SNHL), tinnitus, and/or vertigo have been shown to occur during and following COVID-19 infection. Due to lack of research studies, and the inconsistency and even contradictory of the findings, it remains questionable whether COVID-19 contributes to the high incidence of hearing loss. The proper understanding of the mechanisms behind hearing loss in COVID-19 infections needs further research. However, it seems likely that SNHL could be included among the manifestations of those-called "long COVID" syndrome.

Cost-effectiveness analysis of hearing screening program for primary school children in southern Iran, Shiraz.

BACKGROUND: Hearing loss is the second most common chronic disease, the diagnosis and treatment of which can be faster through screening. In addition, early interventions will save significant costs for the education and health systems. Therefore, the present study aimed to evaluate the cost-effectiveness of hearing screening for primary school children in Shiraz. METHODS: This cross-sectional economic evaluation of cost-effectiveness was conducted from the perspective of the health system. The study population comprised all seven-year-old children participating in the screening program in Shiraz. The present study dealt only with direct costs. The expected costs and outcomes, as well as the ICER index were estimated using the decision tree model. The study outcomes included averted disability-adjusted life years (DALY) and true identification of hearing loss cases. The robustness of the results was evaluated using the one-way sensitivity analysis. The TreeAge 2020 and Excel 2016 software were also used to analyze the collected data. RESULTS: The hearing screening data obtained during 6 years (2015-2020) showed that every year, an average of 22,853 children in Shiraz were examined for hearing, of which 260 were true positive (%1.1). The costs of screening and lack of screening were estimated at $30.32 Purchasing Power Parity (PPP) and $13.75 PPP per child, respectively. The averted DALY due to performing hearing screening was estimated at 7 years for each child. The ICER was positive and equal to $ 0.06 PPP for the identified cases and $ 2.37 PPP per averted DALY. The sensitivity analysis confirmed the robustness of the results. CONCLUSIONS: According to the results, although hearing screening for primary school children had more costs and effectiveness, it was considered cost-effective. Therefore, universal screening with high quality and accuracy is recommended.

Is Newborn Hearing Screening Cost Effective? Economic Consideration for Policy Makers.

BACKGROUD: Hearing loss is the most common congenital disorder that appears as a unilateral or bilateral deafness. Early detection by screening and appropriate intervention lead to better oral communication and language development. The aim of this study was to evaluate the cost per new case identification of neonate hearing screening. METHODS: The cost effectiveness of two stage hospital based newborn hearing loss screening was evaluated in this study. We gathered data for 11168 newborns born in 10 hospitals. We included a direct cost and new case identification as cost and outcome measures from health system prospective in our model. RESULTS: We found 19 new cases with hearing loss from 11168 screened neonates (1.7 per 1000). The referral rates in the first and second stages were respectively 28% and 7%. The total cost of screening program was 132167 US$. The main cost item is screening test (OAE). CONCLUSIONS: We concluded cost per new case detection is 6956 US$ in Iranian neonate hearing screening program. Almost, it is equal to GDP per capita and it may be cost effective. Since there are many strategies to screening of newborn, it is suggested that all alternative screening strategies be analyzed by a cost effectiveness method to find the best strategy for hearing loss screening.

Eye movement patterns in Iranian dyslexic children compared to non-dyslexic children.

OBJECTIVE: Dyslexia is the most common learning disorder that affects 5-10% of school aged children. Eye movement abnormalities and visual processing deficits have been reported in some of dyslexic children. Objective of this study is to compare the eye-movement patterns of Iranian dyslexic children with those of non-dyslexic children as they perform the oculomotor tests and to explore the relationship between their eye-movement patterns and their reading ability. METHODS: Binocular eye movements were recorded by oculomotor subtype of videonystagmography (VNG) testing on 30 dyslexic children and 20 non-dyslexic age-matched children (aged 8-12) in both genders. Dyslexic children were diagnosed with DSM-V scale by experts in reading disorder centers. Gain of the pursuit and optokinetic tests and the latency, accuracy and velocity of the saccade test were measured in both groups of dyslexic and non-dyslexic children. The independent samples t-test, Chi-square test and linear regression test in SPSS v. 21 were used to analyze behavioral and eye-movement parameters. RESULTS: Compared to the non-dyslexic group, dyslexic children presented lower gain in pursuit and optokinetic tests, and increased latency with decreased accuracy in saccade test. All behavioral and eye-movement parameters without saccade velocity differed significantly among two groups. CONCLUSION: The atypical eye movement patterns observed in dyslexic children suggests a deficiency in the visual information processing and an immaturity of brain structures responsible for oculomotor skills.

Oculomotor rehabilitation in children with dyslexia.

Background: Dyslexia is the most common learning disorder. Visual and oculomotor deficits in dyslexic children have been reported. The purpose of this study was to measure oculomotor parameters and analyze the effect of oculomotor rehabilitation strategies on dyslexia. Methods: Binocular eye movements were recorded by oculomotor subtype of videonystagmography (VNG) testing on 30 children with dyslexia and 20 typical reader children (aged 8-12) in both genders. Dyslexic children were diagnosed with DSM-V scale by experts in reading disorder centers. We studied those children with developmental dyslexia, who had deficits in eye movements recording. Dyslexic children were divided into 2 groups of case and control. Oculomotor rehabilitation (including fixation, saccade, and tracking training) was performed in case group for 1 hour, twice weekly for 8 weeks. Before the intervention, results of oculomotor tests were compared between 3 groups (healthy, case, and control). Then, to analyze the effect of the intervention, results of oculomotor tests were compared between case and control groups in pre- and post- intervention stage. Data were analyzed by independent and paired samples t tests, ANOVA, and repeated measures tests in SPSS v. 21. Results: There were significant differences in oculomotor characteristics of dyslexic children in comparison with those reported in typical children. Oculomotor rehabilitation intervention had a positive effect on improvement of oculomotor responses and eye movements in dyslexic children. Moreover, there was no statistically significant difference between dyslexic children and non-dyslexic children in oculomotor skills after the training. Conclusion: Our results showed the positive effects of oculomotor rehabilitation on eye movements. Primary oculomotor assessment in dyslexic children and early use of oculomotor rehabilitation combined with other treatments are highly recommended.