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Neonatal ocular misalignments reflect vergence development but rarely become esotropia
1Orthoptic Department, Royal Berkshire Hospital, London, UK. a.m.harwood@reading.ac.uk
The British Journal of Ophthalmology
|August 21, 2003
Summary
Neonatal misalignment (NMs) in infants often indicates a developing vergence system, appearing in the first two months. Frequent NMs may correlate with later achievement of constant alignment but earlier convergence attempts.
Area of Science:
- Ophthalmology and Vision Science
- Developmental Pediatrics
- Orthoptics
Background:
- Study followed 214 infants of orthoptist mothers for up to 15 years.
- Investigated relationship between neonatal misalignment (NMs) and convergence development.
- Examined NMs in context of later childhood ocular abnormalities.
Purpose of the Study:
- To characterize neonatal misalignment (NMs) behavior in infants.
- To correlate NM patterns with the onset of convergence and prism response.
- To assess the link between early NMs and subsequent ocular development.
Main Methods:
- Prospective postal survey design.
- Orthoptist mothers observed and reported on their own infants' ocular behavior.
- Data collected on alignment, visual development, and ocular abnormalities during early life.
Main Results:
- Confirmed known characteristics of NMs.
- More frequent NMs were associated with longer misalignment duration (p <0.01) and delayed constant alignment (p <0.001).
- Infants with frequent NMs showed earlier first convergence attempts (p = 0.03), with peak NM frequency near convergence onset (p = 0.0002).
Conclusions:
- Neonatal misalignments (NMs) occur within the first two months of life.
- NMs typically signify a normally developing vergence system and early convergence attempts.
- Infantile esotropia is clinically indistinguishable from frequent NMs before two months of age.