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Study of vessel density in adult-onset foveomacular vitelliform dystrophy with Optical Coherence Tomography Angiography.

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BACKGROUND To evaluate retinal and choriocapillaris (CC) vessel density in macular region in patients affected by adult-onset foveomacular vitelliform dystrophy (AOFVD) using optical coherence tomography angiography (OCTA) METHODS: A total… Click to show full abstract

BACKGROUND To evaluate retinal and choriocapillaris (CC) vessel density in macular region in patients affected by adult-onset foveomacular vitelliform dystrophy (AOFVD) using optical coherence tomography angiography (OCTA) METHODS: A total forty-four right eyes of 44 AOFVD patients (20 females, 24 males, mean age 69.17 ± 11.57 years) divided in 3 stages (vitelliform, pseudohypopyon and vitelliruptive) and 60 normal right eyes of 60 controls (20 females, 40 males, mean age 66.04 ± 6.40 years) were included in this prospective study. We evaluated the vessel density of superficial capillary plexus (SCP), deep capillary plexus (DCP) and CC in different macular areas (whole image, parafovea and fovea). We also analyzed the subfoveal choroidal thickness (SFCT) with Enhanced Depth Image (EDI)-OCT. RESULTS The vessel density of SCP and of DCP did not differ between patients and controls in all macular sectors. The vessel density of CC was lower in patients compared to controls but the difference turned out to be statistically significant only in foveal region (p < 0.001). We found that the foveal vessel density of the CC was lower in vitelliform stage and significantly increased in vitelliruptive stage (p = 0.031). At EDI-OCT, the SFCT revealed a statistically significant increase in patients compared to controls (p = 0.002) whereas it was similar in the different stages of this dystrophy (p = 0.276). CONCLUSIONS In vitelliform stage of AOFVD, OCTA and EDI-OCT can be useful to avoid mistakes of evaluation, due to the masking effect artifact. OCTA provides us a better understanding of the vascular role in the physiopathology of the macular diseases.

Keywords: adult onset; density; vitelliform; vessel density; onset foveomacular

Journal Title: Photodiagnosis and photodynamic therapy
Year Published: 2020

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