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Retinal vein occlusions: an OCT- Angiography analysis
La Tunisie Medicale
|March 4, 2022
Summary
Optical coherence tomography angiography (OCT-A) effectively analyzes microcirculatory changes in retinal vein occlusions (RVO). This non-invasive tool precisely maps capillary plexus abnormalities, aiding in diagnosis and management.
Area of Science:
- Ophthalmology
- Medical Imaging
- Retinal Vascular Diseases
Background:
- Retinal vein occlusions (RVO) are a significant cause of vision loss.
- Microcirculatory abnormalities are key features of RVO.
- Assessing capillary plexus changes is crucial for understanding RVO pathophysiology.
Purpose of the Study:
- To analyze microcirculatory abnormalities using OCT-angiography in patients with RVO.
- To evaluate central avascular area and capillary density in RVO.
- To compare OCT-angiography findings with traditional methods.
Main Methods:
- A descriptive study of 35 patients (35 eyes) with RVO.
- Diagnosis confirmed by clinical examination, fundus photography, and fluorescein angiography.
- All patients underwent OCT-angiography and OCT B-scan.
Main Results:
- Branch RVO in 57.1% and central RVO in 42.8% of patients.
- Capillary rarefaction observed in 71.42% of eyes, predominantly in the deep capillary plexus (DCP).
- OCT-A visualized widening of the central avascular zone, vascular tortuosity (more in SCP), capillary dilatation, and microaneurysms (better in DCP).
Conclusions:
- OCT-angiography is a non-invasive method for precise analysis of RVO.
- It allows detailed follow-up of macular edema and capillary plexus architecture.
- OCT-A provides valuable insights into the microvascular changes in RVO.
