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Visual outcome in 879 children treated for strabismus: insufficient accommodation and vision deprivation, deficient

Robert M Ingram1, Trevor W Lambert, Leicester E Gill

  • 1Kettering General Hospital, Northants, United Kingdom. robertingram@tiscali.co.uk

Strabismus
|December 17, 2009
PubMed

Insights

Early spectacle correction for infant hypermetropia before 18 months can reduce severe residual amblyopia. This intervention addresses vision deprivation and improves outcomes in children with strabismus and refractive errors.

Area of Science:

  • Ophthalmology
  • Pediatric Ophthalmology
  • Vision Science

Background:

  • Infant hypermetropia is a significant risk factor for developing amblyopia.
  • Residual amblyopia after treatment can impact long-term visual development in children.
  • Understanding the role of refractive errors in amblyopia is crucial for effective intervention.

Purpose of the Study:

  • To determine the impact of infant hypermetropia on the development of residual amblyopia in children.
  • To investigate the effectiveness of early spectacle correction in mitigating amblyopia.
  • To explore the relationship between refractive error characteristics and visual outcomes.

Main Methods:

  • Cycloplegic retinoscopy was performed on 879 strabismic children at 6 months and upon diagnosis.
  • Hypermetropic children received consistent spectacle correction from 6 months or had accommodation assessed.
  • Statistical analyses (t-tests, regression) correlated clinical findings with visual acuity post-treatment.

Main Results:

  • High hypermetropia (> +5.0D) and myopia (> -3.0D) were linked to reduced visual acuity.
  • Anisometropia in hypermetropes correlated with worse amblyopia; astigmatism was associated with myopia.
  • Early spectacle wear (by 18 months) improved vision in the nonfixing eye.

Conclusions:

  • Severe residual amblyopia may stem from additional vision deprivation, exacerbated by hypermetropia.
  • Initiating spectacle correction for hypermetropia before 18 months can decrease amblyopia severity.
  • Anisometropia appears to result from impaired emmetropization processes.
Abstract

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