Optical Coherence Tomography Angiography in Macular Edema

Area of Science:

• Ophthalmology
• Medical Imaging
• Biomedical Engineering

Background:

• Retinal and choroidal vasculature are crucial for macular health.
• Current imaging methods may involve risks like contrast dye administration.
• Accurate visualization of these vascular networks is essential for diagnosing eye conditions.

Purpose of the Study:

• To introduce and evaluate Optical Coherence Tomography (OCT) angiography as a novel method for visualizing retinal and choroidal vasculature.
• To demonstrate the capability of OCT angiography in providing depth-resolved functional information of blood flow.
• To highlight the potential of OCT angiography to reduce risks associated with contrast agents.

Main Methods:

• Utilizing OCT angiography to capture signals from moving elements within ocular vessels.
• Developing algorithms to determine a vascular decorrelation signal.
• Reconstructing 3-dimensional vascular networks based on the decorrelation signal.

Main Results:

• Successful visualization of the 3-dimensional retinal vascular network.
• Successful visualization of the 3-dimensional choroidal vascular network in the macular area.
• Demonstration of depth-resolved functional information of blood flow.

Conclusions:

• OCT angiography is a promising technique for non-invasive visualization of ocular vasculature.
• This method eliminates the need for intravenous dye, thereby reducing potential adverse events.
• OCT angiography offers a safer alternative for assessing retinal and choroidal vascular health.