BACKGROUND AND OBJECTIVE: To compare the visualization of microaneurysms (MA) and the foveal avascular zone (FAZ) area using optical coherence tomography angiography (OCTA) versus fluorescein angiography (FA) in patients with diabetic macular edema (DME). PATIENTS AND METHODS: Patients were prospectively recruited for same-day imaging on spectral-domain OCTA and FA. OCTA images were automatically segmented into superficial (sOCTA) and deep (dOCTA) capillary plexuses. The number of visible MAs and the FAZ area were compared between the two imaging modalities. RESULTS: Nineteen eyes of 10 patients were included. There was a statistically significant difference between MA counts for FA, sOCTA, and dOCTA (P = .002), and median MA counts were 14.5 (range: 2-43), 9.75 (range: 0-37.5), and 22.5 (range: 5.5-46.5), respectively. dOCTA showed significantly more MAs than sOCTA (P < .001). Although not significant statistically, dOCTA revealed more MAs than FA (P = .06). There was a statistically significant difference between FAZ area for FA, sOCTA, and dOCTA (P = .046), and median FAZ areas were 0.444 (range: 0.1-0.689), 0.224 (range: 0.335-0.806), and 0.345 (range: 0.106-0.881), respectively. FA showed a significantly larger FAZ area than sOCTA (P = .04). CONCLUSIONS: Deep plexus OCTA can better identify microaneurysms compared to either sOCTA or FA. The FAZ area appears larger on FA in contrast to OCTA of both plexuses. [Ophthalmic Surg Lasers Imaging Retina. 2016;47:1013-1019.]. Copyright 2016, SLACK Incorporated.
BACKGROUND AND OBJECTIVE: To compare the visualization of microaneurysms (MA) and the foveal avascular zone (FAZ) area using optical coherence tomography angiography (OCTA) versus fluorescein angiography (FA) in patients with diabetic macular edema (DME). PATIENTS AND METHODS: Patients were prospectively recruited for same-day imaging on spectral-domain OCTA and FA. OCTA images were automatically segmented into superficial (sOCTA) and deep (dOCTA) capillary plexuses. The number of visible MAs and the FAZ area were compared between the two imaging modalities. RESULTS: Nineteen eyes of 10 patients were included. There was a statistically significant difference between MA counts for FA, sOCTA, and dOCTA (P = .002), and median MA counts were 14.5 (range: 2-43), 9.75 (range: 0-37.5), and 22.5 (range: 5.5-46.5), respectively. dOCTA showed significantly more MAs than sOCTA (P < .001). Although not significant statistically, dOCTA revealed more MAs than FA (P = .06). There was a statistically significant difference between FAZ area for FA, sOCTA, and dOCTA (P = .046), and median FAZ areas were 0.444 (range: 0.1-0.689), 0.224 (range: 0.335-0.806), and 0.345 (range: 0.106-0.881), respectively. FA showed a significantly larger FAZ area than sOCTA (P = .04). CONCLUSIONS: Deep plexus OCTA can better identify microaneurysms compared to either sOCTA or FA. The FAZ area appears larger on FA in contrast to OCTA of both plexuses. [Ophthalmic Surg Lasers Imaging Retina. 2016;47:1013-1019.]. Copyright 2016, SLACK Incorporated.
Authors: Brandon J Lujan; Claire T Calhoun; Adam R Glassman; Joseph M Googe; Lee M Jampol; Michele Melia; Deborah K Schlossman; Jennifer K Sun Journal: Transl Vis Sci Technol Date: 2021-03-01 Impact factor: 3.283