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Related Experiment Videos

The accommodative element in accommodative esotropia.

Deniz Somer1, Fatma Gül Cinar, Sunay Duman

  • 1SB Ankara Education and Research Hospital, Cayyolu, 06530 Ankara, Turkey. dsomer@mc.metu.edu.tr

American Journal of Ophthalmology
|March 21, 2006
PubMed
Summary

Reducing hyperopic correction in accommodative esotropia impacts binocular accommodation. Full accommodative ability is key for comfortable undercorrection; reduced performance indicates a need to avoid further reduction.

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Area of Science:

  • Ophthalmology
  • Pediatric ophthalmology
  • Vision science

Background:

  • Accommodative esotropia is a common condition in children.
  • Hyperopic correction is often used to manage accommodative esotropia.
  • The impact of reducing hyperopic correction on binocular accommodative response requires further investigation.

Purpose of the Study:

  • To evaluate the effect of reducing hyperopic correction on binocular accommodative response in fully accommodative esotropia.
  • To determine the optimal reduction in hyperopic correction for comfortable visual function.

Main Methods:

  • A cohort study design was employed.
  • Hyperopic corrections were gradually reduced in 0.50-diopter increments in children with refractive errors between +1.50 and +5.0 diopters.

Related Experiment Videos

  • Binocular accommodative ability was assessed using dynamic retinoscopy (monocular estimate method).

    • Main Results:

    • A reduction in accommodative response was observed, initially in the nondominant eye, followed by the dominant eye.
    • A 0.50-diopter increase in hyperopic correction was needed to overcome bilateral accommodative lag.
    • Children with less hyperopia tolerated greater undercorrection and had higher rates of spectacle weaning.

    Conclusions:

    • Complete binocular accommodative ability is essential for successful hyperopic undercorrection.
    • Reducing hyperopic correction in the presence of decreased accommodative performance is not advisable.