Spectral domain optical coherence tomography in a murine retinal detachment model

Area of Science:

• Ophthalmology
• Medical Imaging
• Retinal Diseases

Background:

• Retinal detachment (RD) is a serious condition affecting vision.
• Understanding RD progression in vivo is crucial for developing treatments.
• Murine models are essential for studying retinal diseases.

Purpose of the Study:

• To evaluate the utility of spectral domain optical coherence tomography (SD-OCT) for imaging retinal detachment (RD) in a murine model.
• To assess changes in retinal morphology following induced RD using SD-OCT and histology.
• To investigate the progression of outer retinal abnormalities in RD.

Main Methods:

• Induced retinal detachment (RD) in C57Bl6 mice via subretinal injection.
• Utilized ultra-high resolution, non-contact spectral domain optical coherence tomography (SD-OCT) for in vivo imaging at multiple time points (days 0, 1-2, 5-6, 15-16).
• Performed fundus evaluation, photography, and histological analysis for comprehensive assessment.

Main Results:

• SD-OCT successfully imaged retinal detachments and confirmed RD histologically in all mice.
• Retinal layers, particularly the photoreceptor layer, appeared indistinct and showed increased reflectivity by days 5 and 15.
• Progressive thinning of the outer nuclear layer and photoreceptor outer segments was observed, along with external limiting membrane visibility loss.

Conclusions:

• Spectral domain optical coherence tomography (SD-OCT) is a valuable, non-invasive tool for monitoring retinal detachment (RD) in a murine model.
• SD-OCT can detect and track outer retinal abnormalities associated with RD progression.
• This imaging modality shows promise for future research into RD pathogenesis and therapeutic interventions.