Assessment of patients with suspected non-organic visual loss using pattern appearance visual evoked potentials

McBain, Vikki A.; Robson, Anthony G.; Hogg, Chris; Holder, Graham E.

doi:10.1007/s00417-006-0431-2

Cited by 32 publications

(12 citation statements)

References 33 publications

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“…Recent studies [73,74] describe techniques for quantifying the level of visual system resolution, both based on short-duration pattern-onset stimulation that reduces the ability of the patient voluntarily to defocus the pattern.…”

Section: Nonorganic Visual Lossmentioning

confidence: 99%

Electrodiagnostic assessment in optic nerve disease

Holder

Gale

Acheson

et al. 2009

Current Opinion in Neurology

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Section: Nonorganic Visual Lossmentioning

confidence: 99%

Electrodiagnostic assessment in optic nerve disease

Holder

Gale

Acheson

et al. 2009

Current Opinion in Neurology

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“…; McBain et al. ). In functional overlay, the patient may have had difficulties coping with the underlying diagnosed organic problem and overacts (Xu et al.…”

Section: Discussionmentioning

confidence: 97%

“…In addition, highly discrete foveal lesions can cause reduced visual acuity without significantly affecting the pVEP or PERG (McBain et al. ).…”

Section: Discussionmentioning

confidence: 99%

Non‐organic visual loss in children: prospective and retrospective analysis of associated psychosocial problems and stress factors

Somers

Casteels

Roie

et al. 2015

Acta Ophthalmologica

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ABSTRACT.Purpose: To report on the prevalence of non-organic visual loss (NOVL) and its associated psychopathology and psychosocial stress factors on children presenting with visual problems without an obvious cause at a routine ophthalmological examination.Methods: One hundred and seventy children presented at our paediatric ophthalmology department between 2007 and 2014 with visual loss. Routine examination showed no obvious underlying cause. Pattern-onset visual-evoked potentials (pVEPs) were performed to obtain an objective visual assessment. Selected patients underwent more investigations, and follow-up was organized in every child to differentiate organic visual loss (OVL) from NOVL. In the NOVL group, we retrospectively analysed the medical file data and prospectively the questionnaires completed by patients and their parents.Results: Eighty-five children (50%) were diagnosed with OVL, the other 50% of children were diagnosed with NOVL. In the latter, girls predominated and the mean age was 11.0 years. The most common presenting symptom was binocular reduced visual acuity. pVEPs were normal in all patients.We categorized associated comorbidity in the NOVL group in three subgroups: malingering, psychosocial stressors and child psychiatric disorders.Conclusion: Non-organic visual loss in children is a common diagnosis in clinical practice. The diagnosis is made by recognition of characteristic features and by exclusion of organic disease. pVEP is a useful tool to obtain an objective visual acuity and to differentiate functional from organic vision loss. The prognosis in NOVL is good with a spontaneous recovery in the majority of patients. Ophthalmologists should be aware of possible underlying psychosocial and psychiatric disorders; referral can be necessary.

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“…Several studies suggest that pattern VEP can be used to objectively establish truer acuity in an eye that a patient is spuriously claiming to be impaired [29][30][31][32]. One example of the use of VEP was a test in children with functional vision loss and optic neuritis.…”

Section: Other Tests For Patients With Functional Vision Lossmentioning

confidence: 99%