Vision
Conditions
Brief 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.
Interventions
None listed
Sponsors
Medical University of Vienna
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
23 Weeks to 29 Weeks
Healthy volunteers
No
Inclusion criteria
* All premature infants under the 29th week of gestation entering our ward.
Exclusion criteria
* Infants with intracranial abnormalities, cerebral malformations, neurological symptoms or known eye pathology.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Latency and Amplitude of Visual Evoked Potential waveforms measured in the first week of life than every second week prospectively until term. | Until term |
Countries
Austria
Contacts
Primary ContactKatrin Klebermass, MD,
Outcome results
None listed