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[Pigmentary retinopathy of neonates and infants. Their examination using electroretinography and visual evoked
Insights
Neurophysiological tests like electroretinography (E.R.G.) and visual evoked potentials (V.E.P.) aid early diagnosis of pediatric retinal diseases. These non-invasive methods detect abnormalities before visible symptoms, aiding prognosis.
Area of Science:
- Ophthalmology
- Neuroscience
- Pediatrics
Context:
- Neurophysiological investigations are crucial for diagnosing pediatric visual impairments.
- Electroretinography (E.R.G.) and visual evoked potentials (V.E.P.) are non-invasive methods applicable to awake children.
Purpose:
- To describe normal age-related patterns for E.R.G. and V.E.P. in children.
- To evaluate the utility of E.R.G. and V.E.P. in the early diagnosis and differential diagnosis of pigmentary retinopathies and macular diseases.
- To assess the prognostic value of serial neurophysiological testing.
Summary:
- E.R.G. and V.E.P. reveal abnormalities in pigmentary retinopathies before ophthalmoscopic signs, with E.R.G. showing progressive alteration while V.E.P.s remain normal initially.
- In macular diseases, V.E.P.s are typically abnormal, whereas E.R.G.s are usually normal.
- Repeated E.R.G. and V.E.P. assessments correlate with disease progression, aiding in prognosis.
Impact:
- Enables earlier detection of retinal diseases in children, potentially improving treatment outcomes.
- Provides valuable tools for differentiating between various pediatric retinal conditions.
- Offers objective measures for monitoring disease progression and informing long-term patient management.
Abstract:
A method of neurophysiological investigation (electroretinography and visual evoked potentials) is described as a non invasive exploration used in awake children. E.R.G. and V.E.P. normal patterns are described in relation to age. The data obtained in pigmentary retinopathies are referred to the physiopathology of these diseases. Usefulness of both neurophysiological tests is showed in the early diagnosis. Significative abnormalities are seen even before any detectable ophthalmoscopic symptom. In pigmentary retinopathies, V.E.P. are normal while E.R.G. is slightly then severely altered. E.R.G. and V.E.P. are also helpful in the differential diagnosis: in macular diseases, E.R.G. is usually normal while V.E.P. are altered. Repeated examinations have a prognostical value: when a disease is progressing, E.R.G. becomes more and more altered and V.E.P.'s abnormalities appear.