PURPOSE: Summarize ISCEV ERG responses from normal infants and children. METHODS: The amplitudes and implicit times of the ISCEV rod, maximal dark-adapted and cone responses from a total of 409 normal infants (n = 128), children and adult controls were compiled. The subjects, aged 1 week to 52 years, were divided into seven age groups, including four in infancy (< 52 weeks). The response parameters for each age group were summarized as percentiles. RESULTS: In each ISCEV condition, the youngest infants (1-5 weeks) had significantly smaller amplitudes and longer implicit times than adults. Amplitude increased and implicit time decreased systematically with age. CONCLUSIONS: The developmental changes in ERG responses are significant. The medians and ranges herein provide provisional norms against which the ERG responses from pediatric patients can be compared.
PURPOSE: Summarize ISCEV ERG responses from normal infants and children. METHODS: The amplitudes and implicit times of the ISCEV rod, maximal dark-adapted and cone responses from a total of 409 normal infants (n = 128), children and adult controls were compiled. The subjects, aged 1 week to 52 years, were divided into seven age groups, including four in infancy (< 52 weeks). The response parameters for each age group were summarized as percentiles. RESULTS: In each ISCEV condition, the youngest infants (1-5 weeks) had significantly smaller amplitudes and longer implicit times than adults. Amplitude increased and implicit time decreased systematically with age. CONCLUSIONS: The developmental changes in ERG responses are significant. The medians and ranges herein provide provisional norms against which the ERG responses from pediatric patients can be compared.
Authors: Linda L Cooper; Ronald M Hansen; Basil T Darras; Mark Korson; Frances E Dougherty; John M Shoffner; Anne B Fulton Journal: Arch Ophthalmol Date: 2002-08
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