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Myopia progression in children is linked with reduced foveal mfERG response

Wing-Cheung Ho1, Chea-Su Kee, Henry Ho-Lung Chan

  • 1Laboratory of Experimental Optometry (Neuroscience), School of Optometry, The Hong Kong Polytechnic University, Hong Kong SAR.

Investigative Ophthalmology & Visual Science
|July 5, 2012
PubMed

Insights

Childhood myopia progression is linked to reduced inner retinal function, particularly in the central retina. This study observed decreased retinal electrophysiology responses in children as their myopia worsened over one year.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Pediatrics

Background:

  • Myopia is a growing global health concern, especially in children.
  • Understanding the ocular changes associated with myopia progression is crucial for early intervention.
  • Retinal electrophysiology offers insights into visual pathway function.

Purpose of the Study:

  • To investigate changes in retinal electrophysiology during myopia progression in children.
  • To correlate multifocal electroretinogram (mfERG) parameters with myopia development over one year.

Main Methods:

  • Twenty-six children (9-13 years) underwent mfERG at 49% and 96% contrast, with a one-year interval.
  • Analyzed amplitudes and implicit times of direct component (DC) and induced component (IC).
  • Used Pearson's correlation to assess the relationship between mfERG changes and myopia progression.

Main Results:

  • Myopia increased significantly (-0.48 D) and axial length increased (0.25 mm) over the year.
  • Reduced central DC and IC amplitudes at 49% contrast correlated with myopia progression.
  • Paracentral implicit times also decreased, while high-contrast responses remained largely unchanged.

Conclusions:

  • Inner retinal function in the central retina declines with myopia progression in children.
  • Paracentral retinal involvement may also occur.
  • Low-contrast mfERG is sensitive to functional changes in pediatric myopia.
Abstract

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