Posterior Vortex Veins in Healthy Eyes Captured by Ultra-widefield OCTA
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- Time of issue：2024-04-22 10:54
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(Summary description)Perfectly consistent with ICG New research published in the Investigative Ophthalmology & Visual Science investigated the incidence and characteristics of posterior vortex veins (PVVs) in healthy eyes and explored their relationship with age and refractive status by using ultra-widefield OCTA (UWF-OCTA). This study confirmed PVVs' presence in healthy eyes (16.1%, 82/510) and classified PVVs into three types based on the location of the vortex vein exit from the eyes: those around the optic disc (fig.1 C), those in the macula area (fig.1 F), and those in other areas of the posterior pole (fig.1 I). Interestingly, this study revealed a predominant presence of PVVs around the optic disc (fig.2), followed by other areas.
Posterior Vortex Veins in Healthy Eyes Captured by Ultra-widefield OCTA
(Summary description)Perfectly consistent with ICG New research published in the Investigative Ophthalmology & Visual Science investigated the incidence and characteristics of posterior vortex veins (PVVs) in healthy eyes and explored their relationship with age and refractive status by using ultra-widefield OCTA (UWF-OCTA). This study confirmed PVVs' presence in healthy eyes (16.1%, 82/510) and classified PVVs into three types based on the location of the vortex vein exit from the eyes: those around the optic disc (fig.1 C), those in the macula area (fig.1 F), and those in other areas of the posterior pole (fig.1 I). Interestingly, this study revealed a predominant presence of PVVs around the optic disc (fig.2), followed by other areas.
- Categories：News
- Time of issue：2024-04-22 10:54
- Views：
Information
Explore posterior vortex veins in healthy eyes!
Perfectly consistent with ICG New research published in the Investigative Ophthalmology & Visual Science investigated the incidence and characteristics of posterior vortex veins (PVVs) in healthy eyes and explored their relationship with age and refractive status by using ultra-widefield OCTA (UWF-OCTA). This study confirmed PVVs' presence in healthy eyes (16.1%, 82/510) and classified PVVs into three types based on the location of the vortex vein exit from the eyes: those around the optic disc (fig.1 C), those in the macula area (fig.1 F), and those in other areas of the posterior pole (fig.1 I). Interestingly, this study revealed a predominant presence of PVVs around the optic disc (fig.2), followed by other areas.
Two types of PVVs in the single eye were observed in two cases. A comprehensive analysis of the relationship between age, refractive error, and the incidence of PVVs revealed that the incidence of PVVs increased gradually with different refractive statuses. There was no significant difference between age groups. 'These findings suggested that choroidal ischemia in highly myopic eyes, especially those with staphyloma, could lead to remodeling of choroidal venous reflux and potentially give rise to the emergence of PVVs.'
A 400kHz speed full-range swept-source OCTA (BMizar, TowardPi Medical) was used in this study to visualize the PVVs in a large-vessel choroidal layer. TowardPi proprietary algorithm (CDHIMN in Fig2) presents perfect consistency with ICG angiography (AFK in Fig2) in the visualization of large and medium choroidal vessels (LMCV), which contributed to a deep understanding of the vortex vein system and its distribution within the eyes and helped identify refractive status as a key factor influencing PVVs occurrence.
This study was authored by Dr. Guiqin He, Dr. Xiongze Zhang, Dr. Xuenan Zhuang, and others, including the team of Prof. Feng Wen, from Zhongshan Ophthalmic Center, Sun Yat-Sen University.
Link to the original text: https://iovs.arvojournals.org/article.aspx?articleid=2793365
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