Posterior Vitreous Structures Evaluated by Swept-source Optical Coherence Tomography with En Face Imaging

Area of Science:

• Ophthalmology
• Medical Imaging

Background:

• The posterior vitreous is crucial for retinal health.
• Understanding normal vitreous anatomy is essential for diagnosing pathologies.

Purpose of the Study:

• To evaluate posterior vitreous structures using swept-source (SS) optical coherence tomography (OCT) with en face imaging.
• To measure the area and assess the shape of the area of Martegiani (AM) and bursa premacularis (BP) in healthy individuals.

Main Methods:

• Retrospective review of SS-OCT images from healthy individuals.
• Acquisition of high-definition line and 3D scans, with enhanced vitreous visualization.
• En face imaging used for measuring AM and BP areas and shapes.

Main Results:

• 24 eyes from 12 healthy individuals were analyzed.
• Mean AM area was 5.73 ± 0.88 mm² and mean BP area was 18.76 ± 6.95 mm².
• AM was predominantly oval, BP was predominantly round; AM showed consistent contact with the optic disc margins.

Conclusions:

• En face imaging with SS-OCT readily visualizes posterior vitreous structures (AM and BP).
• This method provides insights into normal vitreous configuration.
• Findings may aid in understanding vitreous alterations in retinal diseases.