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The retinal function imager and clinical applications.

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  • 1The Retina Service of Wills Eye Hospital, Mid Atlantic Retina, 840 Walnut Street, Suite 1020, Philadelphia, PA 19107 USA.

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Summary

The Retinal Function Imager (RFI) offers noninvasive retinal imaging, measuring blood flow and metabolic function. This technology aids in diagnosing and monitoring retinal vascular diseases like diabetic retinopathy.

Keywords:
Blood flow velocityNoninvasive imagingOximetryRetinaRetinal blood flowRetinal function imager

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Physiology

Background:

  • The Retinal Function Imager (RFI) enables in vivo, noninvasive imaging of retinal structure and function.
  • It offers high-resolution visualization of the retinal microvasculature.

Purpose of the Study:

  • To evaluate the capabilities of the RFI for assessing retinal vascular diseases.
  • To compare RFI with existing imaging modalities like OCT angiography.

Main Methods:

  • The RFI generates capillary perfusion maps.
  • It measures blood flow velocity and performs blood oximetry for metabolic assessment.
  • Image quality and field of view were compared to OCT angiography.

Main Results:

  • RFI provides capillary maps comparable in quality to OCT angiography but with a wider field of view.
  • It can directly measure retinal blood velocity and assess metabolic function.
  • Functional imaging via blood oximetry has current limitations requiring further research.

Conclusions:

  • The RFI is a versatile tool for noninvasive retinal imaging, offering insights into microvasculature, blood flow, and metabolic status.
  • Its broad clinical applications may facilitate early disease diagnosis and progression monitoring.
  • Longer acquisition times may pose a challenge for widespread clinical adoption.