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

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Between-eye correlation of ocular parameters.

Idan Hecht¹, Asaf Shemer¹, Maya Vardi¹

¹Department of Ophthalmology, Shamir Medical Center, Tzrifin, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

Canadian Journal of Ophthalmology. Journal Canadien D'Ophtalmologie

|January 14, 2024

Summary

This summary is machine-generated.

Ocular parameters are highly correlated between eyes, but the strength varies. Structural measurements like axial length show strong correlation, while functional ones like central macular thickness show weak correlation. Adjusting for this inter-eye correlation is crucial in ophthalmic research to prevent bias.

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Area of Science:

Ophthalmology
Biometry
Ocular imaging

Background:

Ocular parameters are known to be correlated between fellow eyes.
Quantifying this correlation is essential for accurate ophthalmic research.
Limited data exists on the extent of correlation for various ocular parameters.

Purpose of the Study:

To analyze and quantify the correlation of different ocular parameters between fellow eyes.
To provide data on the strength of correlation for specific ocular measurements.
To inform ophthalmic research methodologies regarding inter-eye correlation.

Main Methods:

Retrospective analysis of a historical registry.
Inclusion of data from optical coherence tomography (OCT) and biometry examinations.
Calculation of Pearson's r values to determine correlation strength.

Main Results:

Analysis of 17,212 patients examined between 2011 and 2021.
All ocular parameters showed high statistical significance in inter-eye correlation (p < 10⁻³⁶).
Correlation strength varied: axial length (r=0.900) and central corneal thickness (r=0.754) showed strong correlation, while central macular thickness (r=0.189) showed very weak correlation.

Conclusions:

All examined ocular parameters exhibit statistically significant inter-eye correlation.
Structural parameters demonstrate stronger correlation than functional parameters.
Inter-eye correlation must be adjusted for in ophthalmic outcome analyses to avoid bias.