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Electroretinographic changes during childhood and adolescence
E Rodriguez-Saez1, J Otero-Costas, J Moreno-Montañes
1Service of Clinical Neurophysiology, Hospital Xeral de Vigo, Galicia, Spain.
European Journal of Ophthalmology
|January 1, 1993
Summary
Electroretinogram (ERG) parameters mature at different rates. While most changes occur in the first six months, the a-wave matures by age three, and the b-wave continues developing into adulthood.
Area of Science:
- Ophthalmology
- Neuroscience
- Developmental Biology
Background:
- Age-related changes in electroretinogram (ERG) parameters are widely studied.
- There is ongoing debate regarding the specific age when ERG parameters achieve adult values.
Purpose of the Study:
- To determine the age at which key electroretinogram (ERG) parameters reach adult values in healthy individuals.
- To analyze maturational changes in ERG components from infancy to early adulthood.
Main Methods:
- Studied 296 eyes from 148 healthy subjects across 14 age groups (1 week to 21 years).
- Analyzed electroretinogram (ERG) parameters, focusing on a-wave and b-wave development.
Main Results:
- Most ERG maturational changes occur within the first six months of life.
- The a-wave completes development by three years of age.
- The b-wave shows a gradual increase in latency from 3 to 18-21 years and amplitude increases between 7-8 and 12-14 years, following a multiplicative model during early maturation.
Conclusions:
- ERG maturation is a prolonged process with distinct timelines for different components.
- These findings provide a normative reference for ERG development in healthy individuals.
- Understanding ERG maturation is crucial for interpreting age-related visual function changes.