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Development of Confocal Multispectral Imaging Using a Common Commercial Device and Application in a Healthy Aging

Yaashwini L Richard1, Pei Ying Lee1, Phillip Bedggood1

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Investigative Ophthalmology & Visual Science
|June 16, 2026
PubMed
Summary
This summary is machine-generated.

Confocal multispectral imaging (MSI) adapted for commercial devices provides depth-resolved retinal analysis, detecting age-related changes comparable to hyperspectral imaging (HSI). This advancement offers new potential for retinal imaging research.

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Biomedical Optics

Background:

  • Current hyperspectral imaging (HSI) lacks depth resolution and requires specialized equipment.
  • Advancements in optical coherence tomography (OCT) offer opportunities for novel imaging techniques.

Purpose of the Study:

  • To develop and validate an implementable confocal multispectral imaging (MSI) system using a commercially available device.
  • To compare the performance of confocal MSI against established flood-illuminated HSI in an aging mouse model.

Main Methods:

  • Confocal MSI was performed on aging mice (3, 5, 8 months) using blue, green, and infrared reflectance wavelengths.
  • Retinal images were captured with depth-resolved scanning and corrected for chromatic aberration.
  • Flood-illuminated HSI was conducted for comparison.

Main Results:

  • Confocal MSI demonstrated significant interactions with age and retinal depth across all wavelengths after chromatic aberration correction.
  • Reflectance ratios showed significant age-related changes, consistent with HSI findings.
  • Effect sizes between MSI and HSI in the middle retina were comparable.

Conclusions:

  • Confocal MSI is achievable on standard OCT devices with add-on features, providing depth-resolved spectral analysis.
  • This technique offers advantages over HSI by including depth information and utilizing commercial equipment.
  • Both MSI and HSI effectively detect age-related changes in retinal reflectivity.