Pseudo normative pattern electroretinograms in young children and infants

Area of Science:

• Ophthalmology
• Neuroscience
• Pediatric Medicine

Background:

• The development of the visual system in children is complex.
• Understanding the maturation of retinal function is crucial for diagnosing visual impairments.
• Pattern Electroretinogram (PERG) provides insights into macular function.

Purpose of the Study:

• To characterize the developmental trajectory of Pattern Electroretinogram (PERG) responses in a pediatric cohort.
• To analyze the maturation of the P50 and N95 components of the PERG in infants and young children.

Main Methods:

• A retrospective review of PERG data from 104 normal pediatric subjects aged 0-9 years.
• PERG responses were recorded using skin electrodes with a widefield stimulus.
• Key outcome measures included the amplitude and latency of the P50 and N95 components.

Main Results:

• PERG P50 amplitude increased significantly during the first two years of life, with a slower increase thereafter.
• P50 latency decreased in the first six months and then stabilized.
• N95 amplitude showed a similar increase, accompanied by a modest decrease in latency.

Conclusions:

• PERG amplitude increases notably in the first two years, reflecting functional maturation of the pediatric macula.
• These findings correlate with known anatomical maturation of the macula.
• Reliable PERG recordings are feasible in infants using skin electrodes and widefield stimuli.