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

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Retinal Thickness and Axial Length.

Jost B Jonas¹, Liang Xu², Wen Bin Wei³

¹Beijing Institute of Ophthalmology Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University; Beijing Key Laboratory of Ophthalmology and Visual Sciences, Beijing, China 2Department of Ophthalmology, Medical Faculty Mannheim of the.

Investigative Ophthalmology & Visual Science

|April 14, 2016

Summary

This summary is machine-generated.

Axial length elongation in myopia is linked to retinal thinning in the eye

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Area of Science:

Ophthalmology
Retinal Imaging
Biometry

Background:

Axial length is a key determinant of refractive error.
Understanding its relationship with retinal thickness is crucial for diagnosing and managing eye conditions.

Purpose of the Study:

To investigate the association between axial length and retinal thickness in both central (foveal) and peripheral regions.
To determine if axial elongation impacts different retinal layers and locations uniformly.

Main Methods:

Optical coherence tomography (OCT) was used to measure retinal thickness in 1117 participants from the Beijing Eye Study.
Histomorphometric analysis of retinal layers was performed on 32 enucleated eyes.
Multivariate analysis was employed to assess relationships while controlling for confounding factors.

Main Results:

Longer axial length was associated with thicker central foveal thickness and nasal foveal thickness.
Retinal thinning, specifically in the inner and outer nuclear layers, was observed in the equatorial and pre-equatorial regions with increasing axial length.
Foveal retinal thickness, except for the nasal region, was largely unaffected by axial length.

Conclusions:

Myopic axial globe elongation is primarily associated with retinal thinning in the equatorial and pre-equatorial areas.
Axial elongation appears to occur predominantly in these peripheral regions rather than centrally at the fovea.
These findings contribute to understanding the structural changes in the myopic eye.