A novel device for accurate and efficient testing for vision-threatening diabetic retinopathy

Area of Science:

• Ophthalmology
• Medical Devices
• Diabetic Retinopathy Screening

Background:

• Diabetic retinopathy (DR) is a leading cause of vision loss.
• Early detection of vision-threatening diabetic retinopathy (VTDR) is crucial for timely intervention.
• Current screening methods may require pupil dilation, adding time and complexity.

Purpose of the Study:

• To evaluate the diagnostic performance of the RETeval device for detecting VTDR.
• To assess the utility of flicker electroretinography (ERG) and pupillography in undilated diabetic subjects.
• To determine the accuracy and efficiency of a novel handheld screening tool.

Main Methods:

• A multi-site, cross-sectional study involving 468 diabetic subjects.
• Utilized Early Treatment Diabetic Retinopathy Study (ETDRS) fundus photography as the gold standard.
• Employed a calibration and validation phase to develop and test a predictive equation for VTDR detection.

Main Results:

• The area under the receiver operating characteristic (ROC) curve for VTDR detection was 0.86.
• Achieved a sensitivity of 83%, specificity of 78%, and a negative predictive value of 99%.
• Average testing time was a rapid 2.3 minutes.

Conclusions:

• The RETeval device demonstrates high accuracy in identifying patients without VTDR (99% NPV).
• The device is user-friendly, requires no pupil dilation, and offers a significantly short testing time.
• This technology shows promise for efficient and accessible VTDR screening in diabetic populations.