105° field of view non-contact handheld swept-source optical coherence tomography

We demonstrate a handheld swept-source optical coherence tomography (OCT) system with a 400 kHz vertical-cavity surface-emitting laser (VCSEL) light source, a non-contact approach, and an unprecedented single shot 105 degrees field of view (FOV). We also implemented a spiral scanning pattern allowing real-time visualization with improved scanning efficiency. To the best of our knowledge, this is the widest FOV achieved in a portable non-contact OCT retinal imaging system to date. Improvements to the FOV may aid the evaluation of retinal diseases such as retinopathy of prematurity, where important vitreoretinal changes often occur in the peripheral retina. (C) 2021 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Automated summary

This study introduces a handheld swept-source OCT system with a 400 kHz VCSEL light source, non-contact approach, and a 105-degree field of view, along with a spiral scanning pattern. It achieves the widest field of view in a portable non-contact OCT retinal imaging system to date, potentially aiding in the evaluation of retinal diseases.