Unifying Structure and Function Towards a Comprehensive Macular Evaluation in Eye Disorders: A Multi-Modal Approach...

Area of Science:

• Ophthalmology
• Medical Imaging
• Computational Biology

Background:

• Accurate assessment of retinal structure and function is crucial for diagnosing and managing eye diseases.
• Current methods for evaluating retinal sub-layer thickness and visual sensitivity often lack precise spatial correlation.
• Integrating multi-modal imaging data presents a challenge due to differences in image acquisition and potential distortions.

Purpose of the Study:

• To develop and validate a comprehensive framework for multi-modal image registration to precisely correlate retinal structure and function.
• To enable the evaluation of retinal sub-layer thickness and visual sensitivity at specific retinal locations.
• To lay the foundation for advanced structure-function assessment in various macular disorders.

Main Methods:

• A novel framework was developed for automatic and comprehensive registration of confocal scanning laser ophthalmoscope (cSLO) and optical coherence tomography (OCT) images.
• Image registration involved accounting for eye motion, coarse registration using SIFT, and precise elastic image registration.
• Quality control was performed using single-particle and object tracking, with an optional manual mode for perspective distortion correction.

Main Results:

• The framework successfully enabled the evaluation of retinal thickness by integrating precise structural and functional data.
• Validation with retinal images from patients with albinism, amblyopia, macular diseases, and healthy controls demonstrated excellent reliability.
• The co-registered images allowed for querying retinal thickness from segmented retinal layers.

Conclusions:

• The proposed framework provides a self-assessing, multi-tiered approach to evaluate retinal thickness and visual sensitivity.
• It facilitates a precise understanding of the structure-function relationships within the eye.
• This work establishes a foundation for comprehensive structure-function assessment in the macula for diverse ocular pathologies.