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[Infant ametropias and their evolutions (myopia, hyperopia, astigmatism)]

Guy Clergeau1

  • 1Cabinet d'ophtalmologie, 17, rue de l'Yser, Paimpol. guy.clergeau@wanadoo.fr

La Revue Du Praticien
|March 11, 2008
PubMed

Insights

Most infant ametropias, like hyperopia and astigmatism, are established by 9 months and detectable via refractive examination. Significant myopia is rare in infants, typically appearing later in childhood.

Area of Science:

  • Ophthalmology
  • Pediatric Optometry
  • Developmental Biology

Context:

  • Infant visual development involves complex optic characteristics of the eyeball.
  • Sensory maturity for clear vision is typically achieved between 4 to 5 years of age.
  • Ametropias, or refractive errors, can be present from early infancy.

Purpose:

  • To define infant ametropias and their developmental trajectory.
  • To identify the prevalence and timing of refractive errors in infants.
  • To highlight the importance of early detection through refractive examinations.

Summary:

  • Infant ametropias are optic characteristics preventing clear vision without functional disorder.
  • The majority of ametropias form by 9 months and are detectable under cycloplegia, particularly hyperopia and astigmatism.
  • While 1 in 5 infants show non-physiological refraction at 9 months, significant myopia is uncommon until 7-12 years.

Impact:

  • Early detection of infant ametropias allows for timely intervention and management.
  • Understanding refractive error development in infancy informs pediatric eye care practices.
  • Identifies a significant percentage of infants requiring refractive correction by preschool age.

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