Clinical profile of nonstrabismic binocular vision anomalies in patients with asthenopia in North-East India

Magdalene, Damaris; Dutta, Pritam; Choudhury, Mitalee; Deshmukh, Saurabh; Gupta, Krati

doi:10.4103/tjosr.tjosr_36_17

Cited by 7 publications

(8 citation statements)

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“…Possible explanations might include a higher proportion of females in the general population, greater availability of time among females to attend the clinic, potential gender-based referral patterns among eye care providers, or increased affordability of eye care services for women. These results agree with Magdalene et al [18], which also reported a higher prevalence of non-strabismic binocular vision anomalies among females (61.83%). However, this study had a small sample size, and about 69.4% were females, Our findings showed that exophoria was a common binocular vision disorder in Sudanese patients, consistent with the Sydney Myopia Study [26], which found that exophoria was highly prevalent and significantly associated with myopia.…”

Section: Discussionsupporting

confidence: 92%

“…Binocular vision and accommodative anomalies are the second most common visual disorders in the pediatric clinic after uncorrected RE [16]. These dysfunctions mostly affect binocular clarity comfort, reduce visual performance, and impact the efficiency of patients with difficulty in near activities, resulting in decreased productivity [17,18]. Furthermore, manifest strabismus causes cosmetic problems, the development of amblyopia, and other monocular and binocular sensory changes, particularly in children.…”

Section: Discussionmentioning

confidence: 99%

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Clinical features of Sudanese patients presenting with binocular vision anomalies: A hospital-based study

Alrasheed,

Osman,

Aljohani

et al. 2023

JMedLife

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Binocular vision anomalies are major causes of asthenopia symptoms, particularly among the younger population. This study aimed to report the clinical characteristics of Sudanese patients with binocular disorders who attended the orthoptic clinic at Al-Neelain Eye Hospital. In this retrospective hospital-based study, we analyzed data from 304 patients with binocular vision anomalies who visited the orthoptic clinic between October 2020 and June 2021. We collected information on demographics, symptoms, and eye tests such as visual acuity (VA), refractive error (RE), angle of deviation, and the assessment of fusional vergence. Our findings indicated that exophoria was the most common binocular vision anomaly, affecting 79.8% of males and 71.6% of females (p=0.731). Children between 6 and 17 years old showed the highest prevalence of exophoria (75.9%) (p=0.0001). Among patients with exophoria, 100% reported itching associated with tearing during fixation, while 89.5% experienced difficulty in fixation. Refractive error varied by the type of binocular vision disorders (p=0.0001), with higher hyperopia observed in cases of unilateral esotropia and alternate esotropia (+3.571±1.238 D and +3.023±1.553 D, respectively). Positive fusional vergence (PFV) differed by types of binocular vision disorders (p=0.0001) with high PFV in esophoria (18.063±6.848∆) compared to low PFV in exophoria (12.80±5.313∆). The most common types of exophoria were convergence weakness exophoria (45.39%), followed by convergence insufficiency (20.39%). The study concluded that exophoria was the most common binocular vision anomaly among Sudanese patients, with convergence weakness and convergence insufficiency being the predominant anomalies. Headache was commonly prevalent among patients with binocular vision problems. Higher hyperopia was found in esodeviation, while low PFV was associated with exodeviation.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Clinical features of Sudanese patients presenting with binocular vision anomalies: A hospital-based study

Alrasheed,

Osman,

Aljohani

et al. 2023

JMedLife

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“…Similar findings were portrayed in a cross-sectional study at Guwahati, Assam, by Magdalene et al (2017). Authors found that approximately 70% of subjects between 10 and 20 years had NSBVA, with the most common convergence insufficiency [48]. This study result was in accordance with the previously reported studies, where 7.4% (n = 887) subjects had NSBVAs.…”

Section: Discussionsupporting

confidence: 90%

“…Convergence insufficiency was the most common NSBVA reported in both urban (93%) and rural (63%) children. Similar findings were portrayed in a cross-sectional study at Guwahati, Assam, by Magdalene et al (2017). Authors found that approximately 70% of subjects between 10 and 20 years had NSBVA, with the most common convergence insufficiency [48].…”

Section: Discussionsupporting

confidence: 73%

“…Non-strabismic binocular vision anomalies (NS-BVA) associated with asthenopic symptoms have been well documented in the existing literature [46][47][48][49]. Hussaindeen et al (2017), in a population-based study, found that 31.5% in urban and 29.6% rural school-going children had NSBVA with a fact of the increase in the near visual demands thus, hampering their academic performance [49].…”

Section: Discussionmentioning

confidence: 99%

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Prevalence of pediatric eye diseases in Assam, India — a hospital-based retrospective data

2021

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Vision is the primary component for an individual to perceive the world. The learning target begins in infancy, and the precision of a child's vision can significantly affect or change the learning ability. The more a problem with vision continues unaddressed, the more the child's brain learns to overcome the issue with vision. Several pediatric ocular abnormalities have been reported in the existing literature, which aims at portraying an epidethis article is available in open access under Creative Common attribution-Non-Commercial-No Derivatives 4.0 International (CC BY-NC-ND 4.0) license, allowing to download articles and share them with others as long as they credit the authors and the publisher, but without permission to change them in any way or use them commercially

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When virtual and real worlds coexist: Visualization and visual system affect spatial performance in augmented reality

et al. 2021

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New visualization approaches are being actively developed aiming to mitigate the effect of vergence-accommodation conflict in stereoscopic augmented reality; however, high interindividual variability in spatial performance makes it difficult to predict user gain. To address this issue, we investigated the effects of consistent and inconsistent binocular and focus cues on perceptual matching in the stereoscopic environment of augmented reality using a head-mounted display that was driven in multifocal and single focal plane modes. Participants matched the distance of a real object with images projected at three viewing distances, concordant with the display focal planes when driven in the multifocal mode. As a result, consistency of depth cues facilitated faster perceptual judgments on spatial relations. Moreover, the individuals with mild binocular and accommodative disorders benefited from the visualization of information on the focal planes corresponding to image planes more than individuals with normal vision, which was reflected in performance accuracy. Because symptoms and complaints may be absent when the functionality of the sensorimotor system is reduced, the results indicate the need for a detailed assessment of visual functions in research on spatial performance. This study highlights that the development of a visualization system that reduces visual stress and improves user performance should be a priority for the successful implementation of augmented reality displays.

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Clinical profile of nonstrabismic binocular vision anomalies in patients with asthenopia in North-East India

Cited by 7 publications

References 0 publications

Clinical features of Sudanese patients presenting with binocular vision anomalies: A hospital-based study

Clinical features of Sudanese patients presenting with binocular vision anomalies: A hospital-based study

Prevalence of pediatric eye diseases in Assam, India — a hospital-based retrospective data

When virtual and real worlds coexist: Visualization and visual system affect spatial performance in augmented reality

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