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In vivo Structural Assessments of Ocular Disease in Rodent Models using Optical Coherence Tomography

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Optical coherence tomography (OCT) parameters in amblyopia.

Adonis Chedid¹, Maria Fronius¹, Yaroslava Wenner¹

¹Department of Ophthalmology, Goethe University, Frankfurt, Germany.

|April 14, 2025

Summary

This summary is machine-generated.

Amblyopic eyes may have thicker maculas than fellow eyes. Long-term occlusion therapy might reduce macular thickness in amblyopic eyes, suggesting structural changes occur with treatment.

Keywords:

Anisometropia GCL Occlusion Dose Monitoring RNFL ganglion cell layer macular thickness occlusion therapy retina retinal nerve fiber layer

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The Measurement and Treatment of Suppression in Amblyopia

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The Measurement and Treatment of Suppression in Amblyopia

The Measurement and Treatment of Suppression in Amblyopia

Published on: December 14, 2012

Area of Science:

Ophthalmology
Retinal Imaging
Amblyopia Research

Background:

Conflicting publications exist regarding optical coherence tomography (OCT) parameters in amblyopic versus fellow eyes.
This study investigates OCT parameters in amblyopic eyes compared to their fellow eyes.
It also presents initial findings on OCT parameter changes following prolonged occlusion therapy monitored electronically.

Purpose of the Study:

To compare OCT-derived macular and optic disc parameters between amblyopic and fellow eyes.
To evaluate changes in these OCT parameters after long-term occlusion therapy.

Main Methods:

Thirty amblyopic eyes and their fellow eyes underwent macular and optic disc OCT.
A subgroup of six patients had follow-up OCT after prolonged occlusion therapy (≥2135 hours) monitored by Occlusion-Dose-Monitoring (ODM).
Paired statistical tests compared parameters between eyes and before/after therapy, focusing on macular thickness and specific inner retinal layers (GCL+, GCL++).

Main Results:

Amblyopic eyes showed marginally significant increases in average macular thickness (AT) and total macular volume (TV) compared to fellow eyes (p=0.0495).
After occlusion therapy, AT and TV in amblyopic eyes significantly decreased (p=0.031).
No significant differences in inner retinal layer thicknesses (GCL+, GCL++) were found between amblyopic and fellow eyes or after therapy.

Conclusions:

The macula may be thicker in amblyopic eyes, especially in moderate-to-severe cases.
Occlusion therapy appears to induce macular thinning in the amblyopic eye.
The inner retinal layers (GCL+, GCL++) do not appear to be the primary site of these observed structural changes.