Analysis of the Early Development of the Visual Function in Extreme Premature Infants Under 28th Weeks of Gestation — fVEP  

Vision Clinical Trial

Official title: Analysis of the Early Development of the Visual Function in Extreme Premature Infants Under 28th Weeks of Gestation. - A Prospective Study to Identify Normal Values of Flash Visual Evoked Potentials in This Population

Status Recruiting

Clinical Trial Summary

The aim of this study is to collect data on the early visual development of extreme premature infants. The method is the measurement of flash visual evoked potentials and the study population includes premature infants under the 28th weeks of gestation, who have normal cranial ultrasound examinations, normal aEEG, no clinical neurological symptoms and who have a normal ophthalmological status.

fVEP measurements were recorded from the first week of life every second week until term.

The fVEP recordings were performed in active sleep, in stable premature infants, who were continuously monitored. The Nihon Kohden Neuropack 8 was used, the stimulus frequency was 0,5 Hz, artefact free averages were analyzed.

The measurements were analyzed according to the presence and absence of known waveforms, their latencies and amplitudes. Longitudinal analysis was performed to analyse the effect of extrauterine visual development on fVEP with growing gestational ages.

Clinical Trial Description

n/a

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Vision

• NCT number: NCT00768586
• Study type: Observational
• Source: Medical University of Vienna
• Contact: Katrin Klebermass, MD,
• Phone: 0043140400
• Email: katrin.klebermasz@meduniwien.ac.at
• Status: Recruiting
• Phase: N/A
• Start date: February 2008