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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 for whole eye segment imaging.

Cuixia Dai¹, Chuanqing Zhou, Shanhui Fan

¹School of Biomedical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.

|March 16, 2012

Summary

This summary is machine-generated.

We developed a dual-channel spectral domain optical coherence tomography (SD-OCT) system for simultaneous whole-eye imaging. This dual-focus approach overcomes depth limitations, enabling detailed visualization from the cornea to the retina.

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Area of Science:

Ophthalmic imaging
Biomedical optics
Medical imaging technology

Background:

Spectral domain optical coherence tomography (SD-OCT) offers high-resolution cross-sectional imaging of biological tissues.
Traditional SD-OCT systems face limitations in imaging depth, hindering comprehensive visualization of complex structures like the entire human eye.
Simultaneous imaging of both anterior and posterior eye segments presents a technical challenge due to differing optical properties and required focal depths.

Purpose of the Study:

To introduce a novel dual-focus, dual-channel spectral domain optical coherence tomography (SD-OCT) system.
To enable simultaneous imaging of the entire human eye, from the cornea to the retina, in a single acquisition.
To overcome the inherent depth limitations of conventional SD-OCT for comprehensive ocular diagnostics.

Main Methods:

Implementation of a dual-channel SD-OCT system to extend imaging depth.
Utilizing a dual-focus mechanism, achieved by adjusting collimating lenses to tune beam divergence for distinct focal points.
Incorporation of full-range complex (FRC) SD-OCT in one channel to enhance the imaging depth range for anterior segment visualization.

Main Results:

The proposed system successfully achieved simultaneous imaging of both the anterior and posterior segments of the human eye.
Dual channels effectively addressed the limited imaging depth issue inherent in standard SD-OCT.
Dual focusing enabled concurrent precise focusing on both the cornea and the retina.
FRC technology significantly improved the depth range for anterior segment imaging.

Conclusions:

The developed dual-focus, dual-channel SD-OCT system provides a viable solution for simultaneous, comprehensive imaging of the entire human eye.
This technology overcomes previous limitations in imaging depth and focal range, offering potential advancements in ophthalmic diagnostics.
In vivo testing on a human eye demonstrated the system's successful application and effectiveness.