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Retinal microvascular development in the first two years.

Yogavijayan Kandasamy1, Donna Rudd2, Roger Smith3

  • 1Department of Neonatology, The Townsville Hospital, Queensland 4814, Australia; Mothers and Babies Research Centre, Hunter Medical Research Institute, HMRI, The University of Newcastle, NSW 2310, Australia; College of Public Health, Medical and Veterinary Sciences, James Cook University, QLD 4814, Australia.

Microvascular Research
|April 15, 2019
PubMed
Summary
This summary is machine-generated.

This study measured retinal microvasculature in infants, revealing changes in central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE) in the first two years of life. These findings offer insights into early microvascular development and adaptation.

Keywords:
DevelopmentInfantsMicrovasculatureRetinal arteryRetinal vein

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Area of Science:

  • Ophthalmology
  • Pediatrics
  • Vascular Biology

Background:

  • Early life insults are linked to chronic illness, with microvasculature pathology playing a key role.
  • Retinal microvasculature changes are detectable in children by age six, but data for younger children are lacking.
  • Understanding early microvascular development is crucial for identifying potential health risks.

Purpose of the Study:

  • To measure retinal microvasculature in infants during the first two years of life.
  • To establish baseline data for central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE) in early development.
  • To investigate early microvascular changes and adaptations in infants.

Main Methods:

  • Retinal images were analyzed from 18 infants in a proof-of-concept study.
  • Measurements included central retinal arteriolar equivalent (CRAE) and central retinal venular equivalent (CRVE).
  • Data were collected at six, 12, and 24 months of age.

Main Results:

  • Mean CRAE at six months was 156 μm, increasing to 175 μm at 12 months and declining slightly to 168 μm at 24 months.
  • Mean CRVE at six months was 211 μm, increasing to 238 μm at 12 months and declining to 222 μm at 24 months.
  • Arterio-venous ratio and tortuosity index remained stable across all time points.

Conclusions:

  • This study provides the first measurements of retinal microvasculature in the first two years of life.
  • Findings highlight dynamic changes in CRAE and CRVE during infancy.
  • This data can inform future research on early microvascular development and its long-term health implications.