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Ultra-Widefield Retinal Optical Coherence Tomography (OCT) and Angio-OCT Using an Add-On Lens.

Bartosz L Sikorski1,2

  • 1Department of Ophthalmology, Nicolaus Copernicus University, 9 M. Sklodowskiej-Curie St., 85-094 Bydgoszcz, Poland.

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|July 12, 2025
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Summary
This summary is machine-generated.

A new ultra-widefield (UWF) lens for optical coherence tomography (OCT) provides high-quality retinal imaging. This UWF OCT technology is effective for diagnosing and managing various retinal conditions.

Keywords:
BRVOCRVOOCTOCT angiographyREVO FC 130UWFadd-on lensangio-OCTbranch retinal vein occlusioncentral retinal vein occlusiondiabetic retinopathyoptical coherence tomography angiographywidefield retinal imaging

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Area of Science:

  • Ophthalmology
  • Medical Imaging
  • Retinal Imaging Technology

Background:

  • Ultra-widefield (UWF) imaging is crucial for comprehensive retinal evaluation.
  • Assessing peripheral retinal pathologies requires advanced imaging techniques.
  • Existing optical coherence tomography (OCT) systems may have limitations in field of view.

Purpose of the Study:

  • To evaluate the clinical utility of a prototype ultra-widefield (UWF) single-capture optical coherence tomography (OCT) lens.
  • To assess the image quality and diagnostic value of UWF OCT and angio-OCT for retinal pathologies.
  • To determine the feasibility of using an add-on lens for routine UWF retinal imaging.

Main Methods:

  • A case series of 215 patients with retinal pathologies and 39 healthy subjects underwent OCT and angio-OCT.
  • Measurements were performed using a REVO FC 130 with an add-on widefield lens, providing a 22 mm imaging width (110-degree field of view).
  • Image quality, diagnostic sufficiency, and thickness measurements were analyzed.

Main Results:

  • The add-on lens produced very good quality peripheral UWF OCT and angio-OCT images, suitable for diagnosis, follow-up, and treatment planning.
  • Accurate tracing of non-perfusion zones and vascular proliferations was possible.
  • High agreement was found between UWF and standard retinal scans for macular thickness measurements.

Conclusions:

  • The add-on lens enables high-quality UWF OCT and angio-OCT imaging over a 110-degree field of view.
  • This UWF OCT system is suitable for quantitative macular thickness analysis.
  • The add-on lens provides a simple, reliable method for daily UWF retinal imaging and angiography.