Composition and Comparison of the Ocular Surface Microbiome in Infants and Older Children

Kara M Cavuoto1, Santanu Banerjee2, Darlene Miller1

  • 1Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA.

Insights

The ocular surface microbiome (OSM) in children is mainly composed of Staphylococcus species. Older children exhibit a more diverse OSM compared to infants, as revealed by 16S sequencing.

Area of Science:

  • Microbiology
  • Pediatrics
  • Ophthalmology

Background:

  • The ocular surface microbiome (OSM) composition in children remains underexplored.
  • Understanding the pediatric OSM is crucial for identifying potential health implications.

Purpose of the Study:

  • To investigate the OSM composition in infants and compare it with older children.
  • To assess age-related differences in the pediatric OSM using culture-dependent and independent methods.

Main Methods:

  • Prospective, observational, cross-sectional study of children under 18 years.
  • Swabs from ocular, nasal, and throat mucosal surfaces were collected.
  • Analysis involved both traditional culture plating and 16S rRNA gene sequencing.

Main Results:

  • Fifty patients (mean age 37 months) were enrolled.
  • Staphylococcus species predominated in the OSM by both culture and sequencing.
  • Older children showed greater microbiome diversity than infants under 6 months (P=0.05).
  • The OSM closely resembled the nasal microbiome but differed significantly from the throat microbiome.

Conclusions:

  • The pediatric OSM is primarily composed of Staphylococcus species.
  • Age influences OSM complexity, with older children having more diverse microbiomes.
  • 16S sequencing offers a more comprehensive view of the OSM than traditional culture methods.
Abstract

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