Eye measurements in preterm and term newborn infants

Area of Science:

• Neonatal research
• Ophthalmology
• Pediatric anthropometry

Background:

• Accurate anthropometric data is essential for monitoring infant growth and development.
• Establishing normative values for ocular parameters in newborns is critical for early detection of developmental abnormalities.

Purpose of the Study:

• To establish normal anthropometric standards for key eye measurements in newborn infants.
• To define reference ranges for palpebral fissure size, inner and outer canthal distances, and interpupillary distance based on gestational age.

Main Methods:

• Measurements were taken from 198 term and preterm infants (27-41 weeks gestation).
• Palpebral fissure size, inner and outer canthal distances were measured.
• Interpupillary distance was calculated, and mean values with 2 standard deviations were determined for each gestational week.

Main Results:

• Normal values for eye measurements were determined for each week of gestation.
• Intrauterine growth curves were generated for palpebral fissure size, inner and outer canthal distances, and interpupillary distance.
• The data provides a reference standard for these parameters across a wide range of gestational ages.

Conclusions:

• This study successfully established normal anthropometric standards for eye measurements in newborns.
• The generated intrauterine growth curves serve as a valuable tool for clinicians assessing ocular development in preterm and term infants.
• These normative data are vital for identifying deviations from normal development and guiding clinical management.