Saccadic vector optokinetic perimetry in children with neurodisability or isolated visual pathway lesions: observational cohort study

Tailor, Vijay; Glaze, Selina; Unwin, Hilary; Bowman, Richard; Thompson, G M; Dahlmann‐Noor, Annegret

doi:10.1136/bjophthalmol-2015-307208

Cited by 15 publications

(19 citation statements)

References 23 publications

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“…These data indicate that testability was limited in the full test protocol of 40 points, but improved with reduced plots such as the 14‐point protocol used in this study. This aligns with the only other publication of SVOP in children with neuro‐disabilities and visual field defects …”

Section: Discussionsupporting

confidence: 89%

“…SVOP relies on fixation stability to determine whether or not stimuli have been ‘seen’, yet nystagmus – a specific issue for children with visual impairment – results in fixation instability for the majority of patients . These results replicate the findings of Tailor et al on the incompatibility of SVOP with nystagmus. Development of eye‐tracking devices that can detect and correct for nystagmus would be hugely beneficial.…”

Section: Discussionsupporting

confidence: 81%

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Clinical applicability of the Saccadic Vector Optokinetic Perimeter in children with and without visual impairment

Simkin

Misra

Kasture

et al. 2019

Clinical and Experimental Optometry

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This is the largest study to date of the clinical applicability of SVOP in children without visual impairment, as well as assessing the utility of SVOP in children with visual impairment. Further research is needed to assess the accuracy of SVOP in a range of paediatric ocular disorders. SVOP may potentially offer a visual field assessment method for children previously unable to complete current paediatric perimetry techniques.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionsupporting

confidence: 81%

Clinical applicability of the Saccadic Vector Optokinetic Perimeter in children with and without visual impairment

Simkin

Misra

Kasture

et al. 2019

Clinical and Experimental Optometry

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show abstract

“…This compares favorably with a study performed by Tailor et al, 32 in which only 12.5% of child patients completed a 40-point SVOP test. The children in the Tailor et al 32 study had quite severe neurodisability.…”

Section: Discussionsupporting

confidence: 77%

Feasibility, Accuracy, and Repeatability of Suprathreshold Saccadic Vector Optokinetic Perimetry

Murray

Cameron

McTrusty

et al. 2016

Trans. Vis. Sci. Tech.

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PurposeTo evaluate feasibility, accuracy, and repeatability of suprathreshold Saccadic Vector Optokinetic Perimetry (SVOP) by comparison with Humphrey Field Analyzer (HFA) perimetry.MethodsThe subjects included children with suspected field defects (n = 10, age 5–15 years), adults with field defects (n = 33, age 39–78 years), healthy children (n = 12, age 6–14 years), and healthy adults (n = 30, age 16–61 years). The test protocol comprised repeat suprathreshold SVOP and HFA testing with the C-40 test pattern. Feasibility was assessed by protocol completeness. Sensitivity, specificity, and accuracy of SVOP was established by comparison with reliable HFA tests in two ways: (1) visual field pattern results (normal/abnormal), and (2) individual test point outcomes (seen/unseen). Repeatability of each test type was assessed using Cohen's kappa coefficient.ResultsOf subjects, 82% completed a full protocol. Poor reliability of HFA testing in child patients limited the robustness of comparisons in this group. Sensitivity, specificity, and accuracy across all groups when analyzing the visual field pattern results was 90.9%, 88.5%, and 89.0%, respectively, and was 69.1%, 96.9%, and 95.0%, respectively, when analyzing the individual test points. Cohen's kappa coefficient for repeatability of SVOP and HFA was excellent (0.87 and 0.88, respectively) when assessing visual field pattern results, and substantial (0.62 and 0.74, respectively) when assessing test point outcomes.ConclusionsSVOP was accurate in this group of adults. Further studies are required to assess SVOP in child patient groups.Translational RelevanceSVOP technology is still in its infancy but is used in a number of centers. It will undergo iterative improvements and this study provides a benchmark for future iterations.

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“…Among the 118 papers, 76 did not mention that the GMFCS was developed specifically for use with children with CP or discuss its measurement properties . Twenty noted that the GMFCS was created for children with CP but did not justify its application to their condition/clinical description .…”

Section: Resultsmentioning

confidence: 99%

Should the Gross Motor Function Classification System be used for children who do not have cerebral palsy?

Towns

Rosenbaum

Palisano

et al. 2017

Develop Med Child Neuro

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Saccadic vector optokinetic perimetry in children with neurodisability or isolated visual pathway lesions: observational cohort study

Abstract: While SVOP is highly accessible to children, many cannot complete a full 40-point test. Agreement with current standard tests is moderate to poor. Abnormal saccades cause an apparent non-specific visual field defect. In children with glaucoma or nystagmus SVOP calibration often fails.

Cited by 15 publications

References 23 publications

Clinical applicability of the Saccadic Vector Optokinetic Perimeter in children with and without visual impairment

Clinical applicability of the Saccadic Vector Optokinetic Perimeter in children with and without visual impairment

Feasibility, Accuracy, and Repeatability of Suprathreshold Saccadic Vector Optokinetic Perimetry

Should the Gross Motor Function Classification System be used for children who do not have cerebral palsy?

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