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Optical Coherence Tomography Angiography Measurements in Parkinson’S Disease: A Systematic Review and Meta-Analysis Publisher Pubmed



Salehi MA1 ; Rezagholi F2 ; Mohammadi S1 ; Zakavi SS3 ; Jahanshahi A4 ; Gouravani M1 ; Yazdanpanah G5 ; Seddon I6 ; Jabbehdari S7 ; Singh RP8
Authors
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Authors Affiliations
  1. 1. School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. School of Medicine, Qazvin University of Medical Sciences, Qazvin, Iran
  3. 3. School of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
  4. 4. School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
  5. 5. Department of Ophthalmology and Visual Sciences, Illinois Eye and Ear Infirmary, University of Illinois at Chicago, Chicago, IL, United States
  6. 6. College of Osteopathic Medicine, Nova Southeastern University, Fort Lauderdale, FL, United States
  7. 7. Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR, United States
  8. 8. Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, United States

Source: Eye (Basingstoke) Published:2023


Abstract

Optical coherence tomography angiography (OCT-A) is an ocular imaging technology that has emerged as a non-invasive tool to evaluate retinal microvascular changes in neurodegenerative diseases including Parkinson’s disease (PD) and Alzheimer’s disease. While several studies have reported on the presence of pathologic retinal microvascular alterations in PD, the utility of OCT-A as a biomarker for PD evaluation is still unclear. A systematic review and meta-analysis were performed to explore the current evidence for the role of OCT-A in PD published up until June 2022. PubMed, Scopus, and Web of Science databases were used to systematically identify relevant papers and a meta-analysis was conducted using Stata16 software according to the level of heterogeneity applying a random- or fixed-effect model. Thirteen studies of 925 eyes in the PD group and 1501 eyes in the control group assessing OCT-A findings in PD patients were included. The meta-analyses revealed that the foveal region of PD patients had a significantly lower vessel density in the superficial capillary plexus (SCP) compared to healthy controls but that there were no significant differences in the foveal avascular zone, the SCP in whole, parafoveal, and perifoveal regions, and deep capillary plexus. OCT-A metrics may act as a potential biomarker for a more accurate and early PD diagnosis. Still, the OCT-A algorithms and interchangeability between OCT-A devices require further standardization to draw clinical conclusions regarding their utility. © 2023, The Author(s), under exclusive licence to The Royal College of Ophthalmologists.
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