Optical Coherence Tomography Angiography in Retinal Vascular Disorders

Area of Science:

• Ophthalmology
• Medical Imaging
• Biomedical Engineering

Background:

• Traditional fluorescein angiography (FA) is a dye-based method for visualizing retinal vasculature.
• Retinal vascular disorders like diabetic retinopathy and occlusions require advanced imaging techniques.
• Optical coherence tomography angiography (OCTA) presents a newer, non-invasive alternative with depth resolution.

Purpose of the Study:

• To review the current literature on OCTA in common retinal vascular disorders.
• To highlight the advantages of OCTA over traditional angiography.
• To explore the role of OCTA in diagnosis, prognosis, and treatment guidance.

Main Methods:

• Review of existing scientific literature on OCTA and retinal vascular disorders.
• Analysis of OCTA's capabilities, including its dye-free nature and depth resolution.
• Examination of quantitative and qualitative OCTA metrics and their applications.

Main Results:

• OCTA provides detailed, layer-specific imaging of the retinal microvasculature.
• Automated quantitative metrics from OCTA aid in detecting pre-clinical changes and understanding disease.
• OCTA facilitates the development of imaging biomarkers for prognostication and treatment.

Conclusions:

• OCTA is a valuable, non-invasive tool for studying and managing retinal vascular disorders.
• Technological advancements in OCTA will further enhance its clinical utility.
• Integration of artificial intelligence, particularly deep learning, shows promise for refining OCTA analysis.