The Change of Convergence Function of Convergence Insufficiency in Their Twenties after Doing Near Work Using a Smartphone

2018 ◽  
Vol 23 (1) ◽  
pp. 47-56 ◽  
Author(s):  
So Ra Kim ◽  
Si Yoon Park ◽  
Hye Jeong Yeo ◽  
Dae Yeon Kim ◽  
Ji Hye Jeong ◽  
...  
Keyword(s):  
Convergence Insufficiency ◽  
Near Work ◽  
Convergence Function

scholarly journals Effectiveness of pencil push up therapy in patients with convergence insufficiency: a pilot study

1970 ◽  
Vol 9 (3) ◽  
pp. 157-161
Author(s):  
K Sapkota ◽  
DK Sah ◽  
S Bhattarai ◽  
AK Sharma ◽  
JK Shrestha ◽  
...  
Keyword(s):  
Pilot Study ◽  
Prospective Study ◽  
Symptom Score ◽  
Convergence Insufficiency ◽  
Before And After ◽  
The Mean ◽  
Ocular Morbidity ◽  
Near Work ◽  
Push Up

Background: Convergence insufficiency (CI) is a common ocular morbidity encountered in clinical optometry practice. It decreases the efficacy for near work. Pencil push up therapy (PPT) is frequently used for the treatment of CI. Aim: The aim of the study was to determine the effectiveness of pencil push up exercise in convergence insufficiency patients. Methods: A hospital based interventional longitudinal prospective study was designed. All patients attending BP Koirala Lions Centre of Ophthalmic Studies (BPKLCOS), Nepal from March 1st 2008 to February 28, 2009 with symptomatic convergence insufficiency were included in this study. Near point of convergence (NPC), prism fusion vergence (PFV) and symptom score were measured with RAF ruler, prism bar and symptom questionnaire respectively before and after PPT. Results: Out of 84 patients included in the study, only 23 completed follow up check up. Among them 73% were female and 23% were male. The mean age of patients was 19.93±6.0 years and 73% of the total were students. The improvement in NPC was statistically significant after PPT (p =0.008). The average NPC at first visit was 18.58±7.46 cm while at follow up visit, it was 11±4.6 cm. The PFV and average symptom score were also improved significantly. Conclusion: PPT is beneficial for CI patients. It improves the NPC, PFV and reduces the symptom of the patients. However, the compliance of Nepalese CI patients with PPT is poor. Keywords: NPC; PFV; convergence insufficiency; pencil push up therapy. DOI: http://dx.doi.org/10.3126/hren.v9i3.5583   HR 2011; 9(3): 157-161

scholarly journals Refractive Errors and Binocular Vision Anomalies among Young University Students

2021 ◽  
Vol 14 (1) ◽  
pp. 23
Author(s):  
Waleed M. Alghamdi ◽  
Muhammed S. Alluwimi ◽  
Sulaiman A. Aldakhil ◽  
Majid A. Moafa ◽  
Mansour A. Alghamdi
Keyword(s):  
Saudi Arabia ◽  
Academic Performance ◽  
University Students ◽  
Binocular Vision ◽  
P Value ◽  
Refractive Errors ◽  
Work Related ◽  
Convergence Insufficiency ◽  
Near Work ◽  
Cover Test

It has been reported that refractive errors (RE) and binocular vision (BV) anomalies are common among university students. In this study we aimed to assess RE and BV status among university students in Saudi Arabia, and its relation to the academic performance. We recruited 109 participants (aged from 18 to 21 years). Visual acuity (VA) and objective refraction were used to assess the refractive status. Cover test, near-point convergence (NPC) and stereopsis tests were used to assess the BV status. Convergence insufficiency symptom survey (CISS) was applied to quantify near-work related symptoms. Mann-Whitney U test (p value was set as p < 0.05) was used to compare VA, CISS, NPC and the academic performance between the groups who had heterophoria versus orthophoria. We found that there was only 38% emmetrope, while the percentage of heterophoria was 45.8%. The academic performance was not statistically different among the two groups, but CISS and stereopsis scores were significantly different (p < 0.03). We concluded that RE and BV anomalies were common among university students in Saudi Arabia, but did not affect the academic performance. More studies are warranted to understand the low scores of CISS and stereoacuity, and their association with RE and BV anomalies.

scholarly journals Underlying neurological mechanisms associated with symptomatic convergence insufficiency

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Tara L. Alvarez ◽  
Mitchell Scheiman ◽  
Cristian Morales ◽  
Suril Gohel ◽  
Ayushi Sangoi ◽  
...  
Keyword(s):  
Functional Activity ◽  
Peak Velocity ◽  
Adult Population ◽  
Therapeutic Interventions ◽  
Convergence Insufficiency ◽  
Oculomotor Vermis ◽  
Phoria Adaptation ◽  
Near Work ◽  
Brain Behavior ◽  
Normal Controls

AbstractConvergence insufficiency (CI) is the most common binocular vision problem, associated with blurred/double vision, headaches, and sore eyes that are exacerbated when doing prolonged near work, such as reading. The Convergence Insufficiency Neuro-mechanism Adult Population Study (NCT03593031) investigates the mechanistic neural differences between 50 binocularly normal controls (BNC) and 50 symptomatic CI participants by examining the fast and slow fusional disparity vergence systems. The fast fusional system is preprogrammed and is assessed with convergence peak velocity. The slow fusional system optimizes vergence effort and is assessed by measuring the phoria adaptation magnitude and rate. For the fast fusional system, significant differences are observed between the BNC and CI groups for convergence peak velocity, final position amplitude, and functional imaging activity within the secondary visual cortex, right cuneus, and oculomotor vermis. For the slow fusional system, the phoria adaptation magnitude and rate, and the medial cuneus functional activity, are significantly different between the groups. Significant correlations are observed between vergence peak velocity and right cuneus functional activity (p = 0.002) and the rate of phoria adaptation and medial cuneus functional activity (p = 0.02). These results map the brain-behavior of vergence. Future therapeutic interventions may consider implementing procedures that increase cuneus activity for this debilitating disorder.

scholarly journals Ocular effects of acute ingestion of Cola nitida(Linn) on healthy adult volunteers

2007 ◽  
Vol 66 (1) ◽  
Author(s):  
S. A. Igwe ◽  
D. N. Akunyili ◽  
E. U. Ikonne
Keyword(s):  
Healthy Adult ◽  
Pupil Diameter ◽  
The Elderly ◽  
Economic Plant ◽  
Common Features ◽  
Convergence Insufficiency ◽  
Acute Ingestion ◽  
Near Work ◽  
Adult Volunteers ◽  
Cola Nitida

Cola nitida Linn (Sterculiaceae) is an economic plant widely distributed throughout West Africa and possibly other parts of Africa.Members are malvalves because of their lobular nature. Because of its ubiquity, the plant plays an important role in commerce, and in social activities where it is casually eaten without prescription or restriction. The ethnopharmacological effects of bolus ingestion of 30g of Cola nitida was investigated on visually acute and healthy volunteers in order to determine its ocular implications or effects. Results showed that Cola nitida had no effecton the pupil diameter, visual acuity and intraocular pressure but improved the near point of convergence by 43% and increased the amplitude of accommodation by 11% while existing heterophorias are ameliorated. The stimulating effect of Cola nitida might overcome asthenopic symptoms with convergence insufficiency and allows near work to be donewithout stress. Somnolence and ocular muscle imbalance common features of the elderly canbe ameliorated or relieved.

Convergence Insufficiency Treatment Trial – Attention and Reading Trial (CITT-ART): Design and Methods

2015 ◽  
pp. 214-228 ◽  
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
Health Care Providers ◽  
Developmental Disorders ◽  
Attention Problems ◽  
Secondary Outcome ◽  
Care Providers ◽  
Treatment Trial ◽  
Additional Hypothesis ◽  
Convergence Insufficiency

Objective: To describe the design and methodology of the Convergence Insufficiency Treatment Trial: Attention and Reading Trial (CITT-ART), the first randomized clinical trial evaluating the effect of vision therapy on reading and attention in school-age children with symptomatic convergence insufficiency (CI). Methods: CITT-ART is a multicenter, placebo-controlled, randomized clinical trial of 324 children ages 9 to 14 years in grades 3 to 8 with symptomatic CI. Participants are randomized to 16 weeks of office-based vergence/accommodative therapy (OBVAT) or placebo therapy (OBPT), both supplemented with home therapy. The primary outcome measure is the change in the Wechsler Individual Achievement Test-Version 3 (WIAT-III) reading comprehension subtest score. Secondary outcome measures are changes in attention as measured by the Strengths and Weaknesses of Attention (SWAN) as reported by parents and teachers, tests of binocular visual function, and other measures of reading and attention. The long-term effects of treatment are assessed 1 year after treatment completion. All analyses will test the null hypothesis of no difference in outcomes between the two treatment groups. The study is entering its second year of recruitment. The final results will contribute to a better understanding of the relationship between the treatment of symptomatic CI and its effect on reading and attention. Conclusion: The study will provide an evidence base to help parents, eye professionals, educators, and other health care providers make informed decisions as they care for children with CI and reading and attention problems. Results may also generate additional hypothesis and guide the development of other scientific investigations of the relationships between visual disorders and other developmental disorders in children.

Vision and Reading Deficits in Post-Concussion Patients: A Retrospective Analysis

2015 ◽  
pp. 206-213
Keyword(s):  
Retrospective Chart Review ◽  
Health Examination ◽  
Common Symptom ◽  
Reading Deficits ◽  
Grade Levels ◽  
Convergence Insufficiency ◽  
Return To Learn ◽  
Vision Deficits ◽  
Accommodative Facility

The prevalence of vision deficits in the pediatric/young adult concussion population in the private optometric practice setting remains unknown. Thus, a retrospective chart review in this area was conducted in the practice of the first author. Twenty-five consecutive patients with a medical diagnosis of concussion received a comprehensive vision and ocular health examination, which also included an objectively-based Visagraph reading assessment and clinical vergence/accommodative facility testing. Three primary categories of oculomotor-based deficits were found: convergence insufficiency (56%), accommodative insufficiency (76%), and oculomotor-based reading dysfunctions (68-82%). The most common symptom was headaches (84%), with 25% of the symptoms related to reading. 68% (15/22) were categorized as reading at least 2 grade levels below their current school grade level for reading eye movements based on the Visagraph findings. These overall findings are consistent with the general oculomotor-based/reading findings in the concussion/mTBI literature. The present results have important practical ramifications regarding the importance of preconcussion baseline oculomotor and Visagraph testing, as well as post-concussion follow-up testing, to help assess a student’s ability to return-to-learn (RTL).

Vision Therapy’s Role in Basic Intermittent Exotropia: A Case Report

2020 ◽  
pp. 64-73
Keyword(s):  
Treatment Option ◽  
Intermittent Exotropia ◽  
Effective Treatment Option ◽  
Control Scale ◽  
Case Presentation ◽  
Therapy Program ◽  
Convergence Insufficiency ◽  
Hispanic Male ◽  
Vision Therapy ◽  
Accommodative Function

Introduction: Vision therapy has been shown to be a successful treatment option for basic intermittent exotropia as long as a complete workup is performed to assess prognosis and appropriate management. Case Presentation: A 9 year old hispanic male presented to the clinic for a comprehensive exam and was subsequently diagnosed with a basic type intermittent exotropia with a V-pattern deviation. After thorough evaluation of binocular skills and accommodative function with a binocular vision evaluation, he was referred for a vision therapy program to improve fusional ranges, accommodative function, and symptoms. This program consisted of 20 sessions and significantly improved his binocular skills. Discussion: Basic intermittent exotropia can be treated in various ways. Vision Therapy is a worthwhile option. Surgical correction and overminus treatment have also been effective treatments. Assessment should include the intermittent exotropia control scale and the convergence insufficiency symptom survey. Vision therapy treatments focus on diplopia awareness, antisuppression, and fusional vergence ranges. Conclusion: Though more research is necessary, vision therapy has been proven to be a very effective treatment option in basic intermittent exotropia.

scholarly journals Impact of COVID-19 Home Confinement in Children’s Refractive Errors

2021 ◽  
Vol 18 (10) ◽  
pp. 5347
Author(s):  
Cristina Alvarez-Peregrina ◽  
Clara Martinez-Perez ◽  
Cesar Villa-Collar ◽  
Cristina Andreu-Vázquez ◽  
Alicia Ruiz-Pomeda ◽  
...  
Keyword(s):  
Public Health Problem ◽  
Cross Sectional Study ◽  
World Population ◽  
Sectional Study ◽  
Cross Sectional ◽  
School Aged Children ◽  
Digital Devices ◽  
Visual Screening ◽  
Near Work ◽  
The Impact

Background: Myopia is a public health problem, with estimations that 50% of the world population will be myopic by 2050. Some environmental factors, such as time spent outdoors, doing near work, and using digital devices, influence the development of myopia in children. Home confinement in Spain has increased these risk factors, so this study aims to investigate the impact of home confinement during the COVID-19 outbreak in the vision of school-aged children; Methods: A cross-sectional study in children between 5 and 7 years old that completed a visual screening and a questionnaire about their lifestyles at opticians in Spain in September and October of 2019 and 2020. Statistical analysis to compare lifestyles pre and post confinement, and vision in 2020 versus a similar cohort examined at the same opticians in 2019, was conducted; Results: Spanish children spent less time outdoors and more time doing near work in 2020 than in 2019 (p ≤ 0.001). There was a significant decrease of the spherical equivalent (mean ± standard deviation; 0.66 ± 2.03 D in 2019 vs. 0.48 ± 1.81 D in 2020; p ≤ 0.001); Conclusions: Lifestyles of Spanish children changed during the home confinement at the beginning of 2020. Together with changes in their lifestyles, spherical equivalents have decreased, which implies higher figures of myopia for children aged between 5 and 7.

scholarly journals Headache and musculoskeletal pain in school children are associated with uncorrected vision problems and need for glasses: a case–control study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Hanne-Mari Schiøtz Thorud ◽  
Rakel Aurjord ◽  
Helle K. Falkenberg
Keyword(s):  
Musculoskeletal Pain ◽  
School Children ◽  
School Health ◽  
Upper Body ◽  
Musculoskeletal Symptoms ◽  
Control Group ◽  
Pain Group ◽  
And Gender ◽  
Years Lived With Disability ◽  
Near Work

AbstractMusculoskeletal pain and headache are leading causes of years lived with disability, and an escalating problem in school children. Children spend increasingly more time reading and using digital screens, and increased near tasks intensify the workload on the precise coordination of the visual and head-stabilizing systems. Even minor vision problems can provoke headache and neck- and shoulder (pericranial) pain. This study investigated the association between headaches, pericranial tenderness, vision problems, and the need for glasses in children. An eye and physical examination was performed in twenty 10–15 year old children presenting to the school health nurse with headache and pericranial pain (pain group), and twenty age-and-gender matched classmates (control group). The results showed that twice as many children in the pain group had uncorrected vision and needed glasses. Most children were hyperopic, and glasses were recommended mainly for near work. Headache and pericranial tenderness were significantly correlated to reduced binocular vision, reduced distance vision, and the need for new glasses. That uncorrected vision problems are related to upper body musculoskeletal symptoms and headache, indicate that all children with these symptoms should have a full eye examination to promote health and academic performance.

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