PURPOSE. The purpose of this study was to investigate the effects of the extension of collateral vessels on the outcomes of eyes affected by central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO). METHODS. The study was designed as a cross-sectional case series. Patients affected by CRVO and BRVO were progressively recruited, along with an age- and sex-matched control group of healthy subjects. Structural optical coherence tomography (OCT) and OCT angiography (OCTA; 4.5 × 4.5 mm and 9.0 × 9.0 mm acquisitions) were performed on all participants in order to assess the relationship between the presence of collateral vessels and final anatomical outcomes - central macular thickness (CMT), foveal avascular zone - and functional outcomes - best corrected visual acuity (BCVA). RESULTS. Fifty-six eyes affected by CRVO and 47 eyes affected by BRVO were included. Baseline LogMAR BCVA was 0.41 ± 0.33 LogMAR in CRVO, and 0.39 ± 0.25 LogMAR in BRVO (P < 0.01), improving to 0.20 ± 0.26 LogMAR in CRVO (P < 0.01), and 0.19 ± 0.22 LogMAR in BRVO (P < 0.01). Baseline CMT was 511 ± 214 μm in CRVO and 482 ± 178 μm in BRVO (P > 0.05), decreasing to 328 ± 105 μm (P < 0.01) and 321 ± 78 μm in CRVO and BRVO, respectively (P < 0.01). Collateral vessels were detected in 16 of 56 eyes (29%) in CRVO and in 47 of 47 eyes (100%) in BRVO. Their extension was correlated with worse anatomic and visual outcomes. Remarkably, no correlation was found with peripheral capillary nonperfusion and vessel density impairment. CONCLUSIONS. The present study demonstrates that collateral vessel extension is associated with worse anatomic and functional outcomes in patients affected by CRVO and BRVO.

Collateral vessel development in central and branch retinal vein occlusions are associated with worse visual and anatomic outcomes / Arrigo, A.; Aragona, E.; Lattanzio, R.; Scalia, G.; Bandello, F.; Battaglia Parodi, M.. - In: INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE. - ISSN 0146-0404. - 62:14(2021), p. 1. [10.1167/iovs.62.14.1]

Collateral vessel development in central and branch retinal vein occlusions are associated with worse visual and anatomic outcomes

Arrigo A.
;
Aragona E.;Bandello F.;Battaglia Parodi M.
Ultimo
2021-01-01

Abstract

PURPOSE. The purpose of this study was to investigate the effects of the extension of collateral vessels on the outcomes of eyes affected by central retinal vein occlusion (CRVO) and branch retinal vein occlusion (BRVO). METHODS. The study was designed as a cross-sectional case series. Patients affected by CRVO and BRVO were progressively recruited, along with an age- and sex-matched control group of healthy subjects. Structural optical coherence tomography (OCT) and OCT angiography (OCTA; 4.5 × 4.5 mm and 9.0 × 9.0 mm acquisitions) were performed on all participants in order to assess the relationship between the presence of collateral vessels and final anatomical outcomes - central macular thickness (CMT), foveal avascular zone - and functional outcomes - best corrected visual acuity (BCVA). RESULTS. Fifty-six eyes affected by CRVO and 47 eyes affected by BRVO were included. Baseline LogMAR BCVA was 0.41 ± 0.33 LogMAR in CRVO, and 0.39 ± 0.25 LogMAR in BRVO (P < 0.01), improving to 0.20 ± 0.26 LogMAR in CRVO (P < 0.01), and 0.19 ± 0.22 LogMAR in BRVO (P < 0.01). Baseline CMT was 511 ± 214 μm in CRVO and 482 ± 178 μm in BRVO (P > 0.05), decreasing to 328 ± 105 μm (P < 0.01) and 321 ± 78 μm in CRVO and BRVO, respectively (P < 0.01). Collateral vessels were detected in 16 of 56 eyes (29%) in CRVO and in 47 of 47 eyes (100%) in BRVO. Their extension was correlated with worse anatomic and visual outcomes. Remarkably, no correlation was found with peripheral capillary nonperfusion and vessel density impairment. CONCLUSIONS. The present study demonstrates that collateral vessel extension is associated with worse anatomic and functional outcomes in patients affected by CRVO and BRVO.
2021
Optical coherence tomography angiography (OCTA). collateral vessels
Aged
Angiogenesis Inhibitors
Collateral Circulation
Cross-Sectional Studies
Female
Fluorescein Angiography
Follow-Up Studies
Humans
Intraocular Pressure
Intravitreal Injections
Macular Edema
Male
Middle Aged
Optic Disk
Ranibizumab
Retina
Retinal Vein Occlusion
Retinal Vessels
Slit Lamp Microscopy
Tomography, Optical Coherence
Tonometry, Ocular
Vascular Endothelial Growth Factor A
Visual Acuity
Optical coherence tomography (OCT)
Branch retinal vein occlusion (BRVO)
Central retinal vein occlusion (CRVO)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11768/121796
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