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Macular, Foveal and RNFL Thickness Patterns in Amblyopia: A Comparative Study.

Chiranjib Majumder1, Safinaz Mohd Khialdin2, Subrata Mukhopadhyay3

  • 1Optometry & Vision Science Programme, Fakulti Sains Keshihatan, Universiti Kebangsaan Malaysia, Kuala Lumpur, 50300, Malaysia.

Clinical Optometry
|February 26, 2026
PubMed
Summary
This summary is machine-generated.

Amblyopic eyes exhibit greater macular, foveal, and retinal nerve fiber layer (RNFL) thickness compared to non-amblyopic eyes. Optical coherence tomography (OCT) reveals these structural changes, indicating amblyopia impacts retinal structure.

Keywords:
foveal thickness and RNFL thicknessmacular thicknessmixed amblyopiaoptical coherence tomographyrefractive amblyopia

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Area of Science:

  • Ophthalmology
  • Neuroscience
  • Medical Imaging

Background:

  • Amblyopia, or 'lazy eye,' is a developmental disorder affecting visual acuity.
  • Previous research suggests potential structural alterations in the retina associated with amblyopia.

Purpose of the Study:

  • To compare macular thickness, foveal thickness, and retinal nerve fiber layer (RNFL) thickness in amblyopic versus fellow non-amblyopic eyes.
  • To investigate the utility of spectral-domain optical coherence tomography (OCT) in quantifying these differences.

Main Methods:

  • A cross-sectional, observational study utilizing spectral-domain OCT.
  • Standardized imaging protocols measured macular, foveal, and RNFL thickness in 100 amblyopic and fellow eyes.
  • Paired and independent t-tests analyzed differences between amblyopic and non-amblyopic eyes, considering gender and amblyopia subtype.

Main Results:

  • Amblyopic eyes demonstrated significantly increased macular, foveal, and RNFL thickness compared to non-amblyopic eyes (p < 0.05).
  • No significant differences in thickness were observed between anisometropic and mixed amblyopia subtypes.
  • Gender did not significantly impact retinal thickness, with a minor exception for superior RNFL in anisometropic non-amblyopic eyes.

Conclusions:

  • Amblyopia is associated with significant structural retinal changes in the macula and RNFL.
  • OCT is a valuable tool for detecting these structural alterations in amblyopic eyes.
  • Future research should explore axial length correction and post-treatment outcomes in amblyopia.