The effect of strabismus on a young child's selection of a playmate

Impact of Vision Impairment and Ocular Morbidity and Their Treatment on Quality of Life in Children: A Systematic Review

TOPIC

This review summarizes existing evidence of the impact of vision impairment and ocular morbidity and their treatment on children's quality of life (QoL).

CLINICAL RELEVANCE

Myopia and strabismus are associated with reduced QoL among children. Surgical treatment of strabismus significantly improves affected children's QoL.

METHODS

We conducted a systematic review and meta-analysis by screening articles in any language in 9 databases published from inception through August 22, 2022, addressing the impact of vision impairment, ocular morbidity, and their treatment on QoL in children. We reported pooled standardized mean differences (SMDs) using random-effects meta-analysis models. Quality appraisal was performed using Joanna Briggs Institute and National Institutes of Health tools. This study was registered with the International Prospective Register of Systematic Reviews (identifier, CRD42021233323).

RESULTS

Our search identified 29 118 articles, 44 studies (0.15%) of which were included for analysis that included 32 318 participants from 14 countries between 2005 and 2022. Seventeen observational and 4 interventional studies concerned vision impairment, whereas 10 observational and 13 interventional studies described strabismus and other ocular morbidities. Twenty-one studies were included in the meta-analysis. The QoL scores did not differ between children with and without vision impairment (SMD, -1.04; 95% confidence interval [CI], -2.11 to 0.03; P = 0.06; 9 studies). Myopic children demonstrated significantly lower QoL scores than those with normal vision (SMD, -0.60; 95% CI, -1.09 to -0.11; P = 0.02; 7 studies). Children with strabismus showed a significantly lower QoL score compared with those without (SMD, -1.19; 95% CI, -1.66 to -0.73; P < 0.001; 7 studies). Strabismus surgery significantly improved QoL in children (SMD, 1.36; 95% CI, 0.48-2.23; P < 0.001; 7 studies). No randomized controlled trials (RCTs) concerning refractive error and QoL were identified. Among all included studies, 35 (79.5%) were scored as low to moderate quality; the remaining met all quality appraisal tools criteria.

DISCUSSION

Reduced QoL was identified in children with myopia and strabismus. Surgical correction of strabismus improves the QoL of affected children, which supports insurance coverage of strabismus surgery. Further studies, especially RCTs, investigating the impact of correction of myopia on QoL are needed.

FINANCIAL DISCLOSURE(S)

Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.

Community Knowledge, Attitude, and Practices Related to Strabismus and Strabismus Treatment and Surgery in Al-Jouf Region, Saudi Arabia

BACKGROUND

Strabismus is the misalignment of the visual axis of both eyes caused by abnormalities in binocular vision or anomalies of neuromuscular control of ocular motility. This study aimed to assess the community knowledge, attitude, and practices related to strabismus and strabismus treatment and surgery in the Al-Jouf region of Saudi Arabia.

METHODS

This study utilized a quantitative cross-sectional design. The consented volunteering adult participants were randomly selected through sequential enrollment to the completion of the target sample size from five population groups constituting the Al-Jouf region of Saudi Arabia. The data were collected through an online validated self-administered questionnaire. The collected data were analyzed using descriptive and inferential statistics.

RESULTS

The study included 340 participants; 67.6% of them were females and 32.4% were males. Only 66.8% of participants correctly defined strabismus. Symptoms of strabismus were identified as double vision (58.5%), blurred vision (48.2%), headache (31.8%), eye fatigue (41.5%), and difficulty reading (47.1%). Regarding risk factors of strabismus, 48.5% reported family history, 39.4% reported uncorrected refractive errors, and 23.2% reported long screen time. Complications of untreated strabismus were reported as low self-confidence (39.1%), vision loss (27.6%), poor interpersonal relationships (25.9%), amblyopia (42.6%), and cosmetic stigma (14.1%). Only 45.6% of the participants agreed to marry someone with strabismus or allow their relatives to do so. The majority of participants (72.6%) would advise a strabismus patient to visit an ophthalmologist. Despite a higher knowledge regarding strabismus among females, younger agers, higher education, single persons, workers/students, and those inhabiting the capital city of the region, such association did not reach significance.

CONCLUSION

The study shows a moderate level of knowledge, attitude, and practices among the general population of Al-Jouf Saudis toward strabismus. There was no significant relationship between knowledge of strabismus and any of the demographic characteristics of the participants. This might prove detrimental to the early detection and treatment of strabismus to prevent its complications and improve its outcomes and the quality of patients' lives. Institution of correlation plans are mandated by the Ministry of Health and interested stakeholders.

A nationwide cohort study on the risk of ADHD in children with amblyopia mediated by fine motor skill impairment in East Asia

This national administrative investigation of Republic of Korea compared the risk of attention deficit hyperactivity disorder (ADHD) and autism spectrum disorders(ASD) in preschool amblyopic children and identified factors that possibly mediate this association. After propensity score (PS) matching, 7762 amblyopic children and 31,030 non-amblyopic children were included. Amblyopia was associated with ADHD (aOR:1.687; 95% CI 1.444, 1.970) but not with ASD (aOR: 0.591; 95% CI 0.341, 1.026). Fine motor skill impairment was a mediating factor in association of amblyopia with ADHD, accounting for 4.2% (95% CI 1.7, 8.0). In conclusion, amblyopic children have a greater risk of ADHD, and deficits in fine motor skills mediate this association. We suggest increased attention given to fine motor skill underdevelopment in amblyopic children to prevent the development of ADHD.

A mhealth application for automated detection and diagnosis of strabismus

BACKGROUND AND OBJECTIVE

Amblyopia is a public health problem, and strabismus is its primary cause. Our objective is to evaluate the concordance of the diagnosis of strabismus between strabismus expert ophthalmologist and the mhealth application developed for this purpose.

METHODS

We evaluated the concordance of the diagnosis of strabismus between the expert ophthalmologist and the mhealth application by screening 224 children and adolescents in the 5-15 years age group, with snapshots of patients' eyes and their analysis thereof. We were using a multifunctional cell phone with Android and the ophthalmologist's clinical evaluation by analyzing the ocular deviations using simple cover and prism and alternate cover.

RESULTS

Fraction measurements were used with two cutoff points of 6 and 11 prismatic diopters (PD). Results were compared according to their concordances, with a fair Kappa equal to 0.43 (95%CI = [0.38; 0.48]), which was statistically significant (p < 0.0001) at the cutoff point of 6 PD and Kappa equal to 0.49 (95% CI = [0.35; 0.61]), which was statistically significant (p < 0.042) in the cutoff point of 11 PD.

CONCLUSIONS

The cutoff point of 6 PD was chosen for screening by this mhealth application since it caused the loss of only two patients with strabismus, whereas, in the case of 11 PD, the loss was five patients in the universe of 224. These results are promising for the use of this software as a screening method for patients with strabismus.

Investigating the presence of peer bias against ptosis in young children

PURPOSE

To investigate the presence of peer bias directed at young children aged 3-6 years of age and the age at which this bias emerges.

METHODS

Children (3-6 years) completed an individual testing session involving two tasks: (1) a paired photograph task examined the effect of the appearance of ptosis on children's preferences in two different social situations (toy sharing and birthday party); (2) a ranking task investigated whether different grades of ptosis are evaluated differently by children of different ages.

RESULTS

A total of 217 children were included. The paired photograph task showed that with increasing age, subjects were less likely to invite children with ptosis to share a toy or attend their birthday party. Three-year-olds did not show a bias against peers with ptosis; however, 4- to 6-year-olds did chose significantly fewer children with an apparent ptosis across both social situations. The ranking task highlighted that 6-year-olds viewed a grade 3 ptosis significantly more negatively than 3- and 4-year-olds; however, there was no effect of age on the rankings given to other grades of ptosis.

CONCLUSIONS

Bias against ptosis emerges at about 4 years of age and is still evident at 6 years.

Saudi Children's Perception of Strabismus: A Hospital-Based Study

PURPOSE:

Children with strabismus may face difficulties interacting with their peers in elementary school. This study investigates the psychosocial effect of different types of strabismus on Saudi children's selection of a playmate.

METHODS:

Photographs of orthotropic children were digitally modified to simulate various magnitudes of strabismus. Orthotropic children with normal visual acuity viewed 18 sets of paired photographs and were asked to choose a playmate from each pair. Parents were asked to fill out a questionnaire on their socioeconomic background and to determine whether surgery should be indicated in strabismic patients for psychosocial reasons. Parents were also asked to rate their perception of seven personal characteristics of two images of the same child (one orthotropic and one strabismic).

RESULTS:

Two hundred and thirty-three children, aged 3–15 years (mean age: 9.94 [3.6] years), were studied. Children aged ≤6 years were significantly more likely not to distinguish between orthotropic children and those with strabismus (P < 0.001). Out of 233 participants, 69.6% were significantly in favor of orthotropic faces as opposed to 30.4% (P < 0.0001). Children perceived esotropia as less disturbing than exotropia and hypertropia (P < 0.001). Smaller magnitudes of strabismus were significantly preferred over larger angles (P < 0.001). Parents judged strabismic faces more negatively than orthotropic faces on all seven characteristics. Almost 88.4% of the adults thought that strabismic patients should undergo surgery for correction.

CONCLUSIONS:

Our findings suggest that children with apparent strabismus are perceived negatively and might be subjected to social alienation at a young age. Therefore, there is a need for strategies to address negative social bias toward children with strabismus and to enhance their peer acceptance in our society.

Automatic diagnosis of strabismus in digital videos through cover test

BACKGROUND AND OBJECTIVE

Medical image processing can contribute to the detection and diagnosis of human body anomalies, and it represents an important tool to assist in minimizing the degree of uncertainty of any diagnosis, while providing specialists with an additional source of diagnostic information. Strabismus is an anomaly that affects approximately 4% of the population. Strabismus modifies vision such that the eyes do not properly align, influencing binocular vision and depth perception. Additionally, it results in aesthetic problems, which can be reversed at any age. However, the use of low cost computational resources to assist in the diagnosis and treatment of strabismus is not yet widely available. This work presents a computational methodology to automatically diagnose strabismus through digital videos featuring a cover test using only a workstation computer to process these videos.

METHODS

The method proposed was validated in patients with exotropia and consists of eight steps: (1) acquisition, (2) detection of the region surrounding the eyes, (3) identification of the location of the pupil, (4) identification of the location of the limbus, (5) eye movement tracking, (6) detection of the occluder, (7) identification of evidence of the presence of strabismus, and (8) diagnosis.

RESULTS

To detect the presence of strabismus, the proposed method achieved a specificity value of 100%, and (2) a sensitivity value of 80%, with 93.33% accuracy in diagnosis of patients with extropia. This procedure was recognized to diagnose strabismus with an accuracy value of 87%, while acknowledging measures lower than 1Δ, and an average error in the deviation measure of 2.57Δ.

CONCLUSIONS

We demonstrated the feasibility of using computational resources based on image processing techniques to achieve success in diagnosing strabismus by using the cover test. Despite the promising results the proposed method must be validated in a greater volume of video including other types of strabismus.

Impact of strabismus on the quality of life of Chinese Han teenagers

BACKGROUND

Although much research has been conducted on the impact of strabismus on the quality of life (QoL) of adults, the effect of this condition on teenagers has not been extensively studied. This study therefore aimed to assess the effect of strabismus on the vision-related QoL of Chinese teenagers.

METHODS

The Chinese version of the 25-item National Eye Institute Visual Function Questionnaire (NEI-VFQ-25) was self-administered by 1,040 teenagers with strabismus and 1,002 individuals with normal vision. All the participants were from the Chinese Han population. The independent samples t-test was used to compare QoL between teenagers with and without strabismus.

RESULTS

The majority of scores on the NEI-VFQ-25 domains were significantly different between the two groups. QoL was significantly lower in individuals with strabismus compared with teenagers with normal vision on all domains, with the exception of social functioning.

CONCLUSION

Statistically significantly lower vision-related QoL scores were found in Chinese Han teenagers with strabismus compared with those without strabismus.

Alcohol use and positive screening results for depression and anxiety are highly prevalent among Chinese children with strabismus

PURPOSE

To study associations between strabismus and alcohol use, anxiety, and depression among 10- to 17-year-old children in Guangdong, southern China.

DESIGN

Cross-sectional, population-based study.

METHODS

Among 7537 children aged 6-17 years from 9 randomly selected primary and middle schools, ocular alignment was assessed with the Hirschberg light reflex, cover-uncover testing, and alternate cover testing at distance (6 m) and near (40 cm). Additionally, 4000 children (53.1%) aged 10+ years received self-administered questionnaires containing screening questions on alcohol use, anxiety, and depression.

RESULTS

Examinations were completed on 7464 of 7537 subjects (99.0%), including 3928 boys (52.6%), with a mean age of 11.1 ± 1.8 years. The prevalence of any strabismus, including exotropia (2.7%), esotropia (0.2%), and intermittent exotropia (3.9%), was 6.8%. Strabismus was more prevalent in urban students (7.3%) and female subjects (7.4%) compared to rural students (6.0%) and male subjects (6.2%) (all P < .05). In multivariate regression models, any strabismus was associated with older age and rural vs urban residence. Among 3903 children (97.6%) answering questionnaires, history of alcohol use (62.3% vs 36.3%) and positive screening responses for depression (26.0% vs 11.6%) and anxiety (10.3% vs 4.9%) were significantly (P < .01 for all) more common among children with strabismus.

CONCLUSION

These Chinese children with strabismus had a significantly higher prevalence of alcohol use and possible markers of emotional problems than children without strabismus. Further research should focus on the appropriateness of classifying surgical treatment for strabismus as "cosmetic" (ineligible for reimbursement) under China's rural health insurance.

Specific health-related quality of life concerns in children with intermittent exotropia

PURPOSE

To assess the frequency of specific health-related quality of life (HRQOL) concerns in children with intermittent exotropia (XT) using the Intermittent Exotropia Questionnaire (IXTQ).

METHODS

Eighty children with intermittent XT (aged 5 to <17 years), plus one parent for each child, completed the Child and Proxy IXTQ respectively. Each item was scored from 0 to 100 (worst to best HRQOL). Mean scores were calculated for each item and items were ranked from lowest to highest impact (worst HRQOL). Analysis was repeated for sub-groups of 5- to <8-year-olds (n = 46) and 8- to <17-year-olds (n = 34).

RESULTS

Highest impact Child IXTQ items were: "It bothers me that I have to shut one eye when it is sunny," "I worry about my eyes," and "It bothers me because I have to wait for my eyes to clear up." Highest impact Proxy IXTQ items were: "It bothers my child because he/she has to shut one eye when it is sunny" and "My child worries about his/her eyes." Lowest impact Child and Proxy items were "My eyes make it hard to make friends" and "Kids tease me because of my eyes." Ranking of items was similar for younger and older children.

CONCLUSIONS

The greatest HRQOL concerns for children with intermittent XT were shutting one eye when sunny, waiting for their eyes to clear up, and worrying about their eyes. Items related to teasing and making friends were of least concern. Evaluation of HRQOL concerns using the IXTQ may be helpful in the clinical care of individual patients.

The perception of strabismus by children and adults

BACKGROUND

Visible strabismus has been shown to have adverse psychosocial consequences. It remains controversial if esotropia or exotropia is perceived more negatively. The aim of this study was to determine if esotropia or exotropia and the eye (side) in which strabismus is present are perceived differently. We also asked our adult participants: (1) if they thought visible strabismus should be corrected by surgery, (2) if they thought that strabismus surgery should only be to improve the cosmesis, and (3) if they thought that the surgery should be paid for by health insurance.

METHODS

One hundred adults and 61 children rated four photographs of a digitally altered picture of a boy and four of a girl, showing a large-angle esotropia or exotropia either in the left or on the right eye. The adults were additionally asked if a squint should be operated, if they considered strabismus surgery to be a cosmetic procedure, if in their opinion strabismus surgery should be covered by compulsory health insurance, and if children with strabismus are disadvantaged. Comparisons were performed using ANOVA and regression analysis.

RESULTS

Adults perceived a squinting right eye as more disturbing than a squinting left eye p < 0.001). The direction of strabismus, the age, gender, and the number of persons with a squint among family and friends of the respondents did not influence the perception of strabismus by adults (p > 0.1 for each). Children also found that a squinting right eye is more disturbing (p < 0.001) than a left one. Additionally, children ranked esotropia worse than exotropia (p < 0.001). Neither age nor gender had an impact on the perception of strabismus by children. Of the adults, 94% would recommend surgery for all forms of strabismus, 18% thought that surgery is only cosmetic, and 94% found that health insurance should cover strabismus surgery for everybody. Problems of squinting children named by the adults included: being made fun of by other children (53%), problems with eyesight (39%), people looking strangely at them (21%), less acceptance by peers (17%), less self confidence (6%), problems judging distances (4%), and that they are perceived as less intelligent (3%).

CONCLUSIONS

Adults and children rated a squinting right eye as worse compared to a left one. Children perceived esotropia as more disturbing than exotropia. Neither age, nor gender, nor the fact that the respondents have friends or family members with a squint, had an impact on this ranking. Almost all adults would correct all forms of strabismus, and think that surgery should be covered by compulsory health insurance.

General health-related quality of life in preschool children with strabismus or amblyopia

OBJECTIVE

To explore the associations of general health-related quality of life (GHRQOL) with strabismus or amblyopia in preschool children.

DESIGN

Population-based study.

PARTICIPANTS

Sample of children aged 25 to 72 months in the Multi-ethnic Pediatric Eye Disease Study (MEPEDS).

METHODS

The Pediatric Quality of Life Inventory (PedsQL), a measure of GHRQOL, was administered to the parents of the children.

MAIN OUTCOME MEASURES

The PedsQL consists of 4 subscales (physical, emotional, social, and school functioning) and 3 composite scores (physical summary, psychosocial summary, and total). Regression models were used to evaluate the associations of GHRQOL with strabismus (in children 25-72 months) or amblyopia (in children 30-72 months).

RESULTS

Of the 4218 children aged ≥25 months, 121 (2.9%) were diagnosed with strabismus. Significant differences were found in all 3 composite scores between children with and without strabismus, before and after controlling for gender, age, race, family income, systemic health conditions, and prior knowledge of strabismus diagnosis (P<0.05). These differences were present in esotropes, exotropes, children with intermittent strabismus, and children with constant strabismus. A total of 3318 children were aged ≥30 months, and 71 children (2.1%) had amblyopia. There were no significant differences in any PedsQL scores between children with and without amblyopia, even after adjusting for gender, age, race, and family income (P>0.05).

CONCLUSIONS

Strabismus was associated with significantly worse GHRQOL in preschool children. Although we did not find any detectable association between amblyopia and GHRQOL, further study using vision-specific instruments is required to explore the impact of both strabismus and amblyopia on pediatric quality of life.

What do kids think about kids in eyeglasses?

PURPOSE

Previous studies have examined how people feel about others who wear glasses, but no studies of children have been published on the subject. We conducted the Children's Attitudes about Kids in Eyeglasses (CAKE) study to determine how children feel about other children who wear glasses.

METHODS

Subjects compared a series of 24 picture pairs and answered six questions regarding which child ...he or she would rather play with, looks better at playing sports, appears smarter (more intelligent), appears nicer, looks more shy and looks more honest. The children in each pair of pictures differed by gender, ethnicity and spectacle wear. Logistic regression was performed to determine the probability and confidence interval that a subject would pick a particular child.

RESULTS

Eighty subjects between the ages of 6 and 10 years participated. The average (+/-SD) age of the subjects was 8.3 +/- 1.3 years, 42 (53%) were females, 51 (64%) were whites, 21 (26%) were blacks, and 30 (38%) wore glasses. The spectacle wearer appeared smarter (0.66, CI = 0.60-0.71) and more honest (0.57, CI = 0.50-0.64), and children who wore glasses looked smarter regardless of whether the child picking wore glasses. Both boys (0.66, CI = 0.68-0.79) and girls (0.77, CI = 0.71-0.82) thought that boys looked better at playing sports.

DISCUSSION

The old adage 'Boys never make passes at lasses who wear glasses' may be outmoded, but glasses may tend to make children look smarter and slightly more honest to their peers.