Contact lens electroretinography in preterm infants from 32 weeks after conception: a development in current...

Area of Science:

• Ophthalmology
• Neonatology
• Neuroscience

Background:

• Preterm infants, especially those born before 35 weeks gestation, represent a vulnerable population.
• Assessing retinal development and function is crucial for understanding visual health in neonates.
• Current methods for electroretinogram (ERG) recording may pose challenges in very young infants.

Purpose of the Study:

• To evaluate the feasibility and safety of using a contact lens electrode for electroretinogram (ERG) recordings in preterm infants.
• To determine if this method is practicable for assessing retinal function in neonates with low gestational age.

Main Methods:

• The electroretinogram (ERG) was recorded in seven very low birthweight preterm infants.
• An infant monkey contact lens electrode was utilized for ERG measurements.
• Recordings were performed on 14 occasions, with infants aged 23-51 days (gestational age 32-34 weeks).

Main Results:

• No adverse complications were observed during or after the ERG recordings.
• A decrease in the dark-adapted rod threshold was noted with increasing infant age and maturity.
• This indicates enhanced retinal sensitivity as the infants matured.

Conclusions:

• Contact lens electrode ERG recording is a practicable and well-tolerated procedure in extremely immature preterm infants.
• This technique facilitates further evaluation of retinal development in this high-risk neonatal population.
• It offers a valuable tool for monitoring visual pathway maturation in vulnerable infants.