Grading of macular perfusion in retinal vein occlusion using en-face swept-source optical coherence tomography angiography: a retrospective observational case series

Table 1 Baseline Patient Characteristics

Baseline Characteristics	N (%)
Male	74 (54)
Female	64 (46)
Age, years
<40	15 (11)
40–50	23 (17)
51–60	45 (33)
>60	55 (40)
Baseline BCVA, logMAR
0–0.1	5 (3)
>0.1–0.3	29 (20)
>0.3–1	82 (57)
>1	28 (19)
Type of RVO
Major BRVO	60 (42)
Macular BRVO	16 (11)
CRVO	59 (41)
HRVO	9 (6)
SS-OCT features
CMT, μ
< 200	13 (9)
200–300	57 (39.5)
> 300	74 (51)
DRIL	118 (82)
DROL	96 (67)
FFA	74 (51)
Non-ischemic RVO	28 (38)
Ischemic RVO	46 (62)
SS-OCTA features
SCP layer ischemia
No detectable ischemic changes	45 (31)
≥1 quadrant	99 (69)
Perifoveal capillary ischemia	103 (71.5)
Normal vessel density	33 (23)
Reduced vessel density	111 (77)
DCP layer ischemia
No detectable ischemic changes	2 (1.3)
≥1 quadrant	142 (99)
Perifoveal capillary ischemia	137 (95)
Normal vessel density	2 (1.3)
Reduced vessel density	142 (99)

BCVA Best-corrected visual acuity, BRVO Branch retinal vein occlusion, CMT Central macular thickness, CRVO Central retinal vein occlusion, DCP Deep capillary plexus, DRIL Disorganized retinal inner layers, DROL Disrupted retinal outer layers, logMAR logarithm of the minimum angle of resolution, μ microns, RVO Retinal vein occlusion, SCP Superficial capillary plexus, SS-OCTA Swept-source optical coherence tomography angiography, SS-OCT Swept-source optical coherence tomography

ISSN: 1471-2415