Comparison of widefield swept-source optical coherence tomography angiography and ultra-widefield fluorescein angiography in the detection of non-perfusion areas in diabetic retinopathy.

Purpose: To compare the detection of non-perfusion areas (NPAs) in diabetic retinopathy (DR) using 24×20 mm widefield swept-source optical coherence tomography angiography (SS-OCTA) and ultra-widefield fluorescein angiography (UWFA), and to explore NPA distribution patterns.

Methods: This retrospective study included 64 eyes from 48 DR patients who underwent 24×20 mm SS-OCTA and UWFA examinations. NPAs were manually annotated, and the detection rates and distribution patterns across retinal quadrants were analyzed and compared between the two imaging modalities.

INTRAOPERATIVE 3-DIMENSIONAL FLUORESCEIN ANGIOGRAPHY-GUIDED PARS PLANA VITRECTOMY FOR THE TREATMENT OF MULTIPLE RETINAL DISEASES.

Purpose: To explore the effectiveness and practicality of intraoperative fluorescein angiography (IOFA) in both common and rare retinal diseases.

Methods: We conducted a case series study involving three patients with vascular abnormality from various causes. A custom-designed, single-photon ultra-wideband spectral light source and integrated filters were used to perform IOFA.