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Related Experiment Videos

Keratometry in children.

P A Asbell1, B Chiang, M E Somers

  • 1Department of Ophthalmology, Mount Sinai School of Medicine, New York, NY 10029.

The CLAO Journal : Official Publication of the Contact Lens Association of Ophthalmologists, Inc
|April 1, 1990
PubMed
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Corneal curvature in children decreases systematically from birth until approximately 54 months of age. After this age, the cornea stabilizes, but eyes with persistent hyperplastic primary vitreous show steeper corneas.

Area of Science:

  • Ophthalmology
  • Pediatric Ophthalmology
  • Corneal Physiology

Background:

  • Corneal curvature is a critical factor in visual development.
  • Understanding normative corneal changes in early childhood is essential for diagnosing ocular conditions.

Purpose of the Study:

  • To document the changes in corneal curvature in children from birth to 54 months.
  • To compare corneal curvature in children with persistent hyperplastic primary vitreous (PHPV) to normal controls.

Main Methods:

  • Central keratometric measurements were taken in 70 children.
  • Children were grouped by age, including newborns to 6 months and 12-18 months.
  • Eyes diagnosed with PHPV were also evaluated.

Main Results:

Related Experiment Videos

  • Mean keratometric readings showed a systematic decline from birth to 54 months.
  • Newborns-6 months averaged 47.59 D; 12-18 months averaged 45.56 D.
  • Corneas stabilized around 54 months at 42.69 D.
  • Eyes with PHPV exhibited significantly steeper corneas than age-matched controls.

Conclusions:

  • Childhood corneal curvature undergoes significant, predictable changes.
  • Steeper corneal curvature is a characteristic finding in persistent hyperplastic primary vitreous.