IMAGING THE VITREOUS WITH A NOVEL BOOSTED OPTICAL COHERENCE TOMOGRAPHY TECHNIQUE: Vitreous Degeneration and Cisterns.

Richard F Spaide, Philippe Valmaggia, Peter M Maloca, Hendrik P N Scholl, Tilman P Otto, Sophie Caujolle
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引用次数: 7

Abstract

Purpose: To evaluate the degenerative findings including cistern formation in the premacular vitreous using optical coherence tomography.

Methods: A novel enhanced vitreous imaging method by which four A-scans at each position were averaged before the Fourier transform increased the image quality per frame so that subsequent image registration for averaging could occur. Analysis of B-scans and volume-rendered images of eyes in subjects of various ages was performed.

Results: There were 43 eyes of 23 subjects ranging in age from 23 to 68 years. The texture in the vitreous images suggests specific orientations of the vitreous fibers in the macular region; there were fibers circumferential to the retina immediately anterior to the premacular bursa. The pattern of the vitreous fibers seemed less well-defined internal to the zone of circumferential fibers. In younger eyes, there were striations oriented in a roughly inferior to superior direction in this zone. In older eyes, there were striations in the same orientation but actually were alternating zones of vitreous synchysis and syneresis. In these same eyes, numerous cisterns appeared at various levels in the vitreous gel. With extensive vitreous condensation and synchysis, definition of the premacular bursa was lost.

Conclusion: With this novel method of enhanced vitreous imaging, the vitreous seemed to have stereotypic patterns of degeneration. The formation of vitreous syneresis and synchysis may be related to organization architecture of the vitreous, including the pattern of vitreous collagen deposition, and the effects of eye motion through decades of time.

用一种新的增强光学相干断层成像技术对玻璃体进行成像:玻璃体变性和玻璃体池。
目的:利用光学相干断层扫描评价黄斑前玻璃体的退行性表现,包括池形成。方法:一种新的增强玻璃体成像方法,在傅里叶变换之前,对每个位置的四个A扫描进行平均,提高了每帧的图像质量,以便随后的图像配准进行平均。分析了不同年龄的受试者的眼睛b扫描和体渲染图像。结果:23例受试者43只眼,年龄23 ~ 68岁。玻璃体图像的纹理提示黄斑区域玻璃体纤维的特定方向;黄斑前囊的前方有环绕视网膜的纤维。玻璃体纤维在周向纤维区内部的分布似乎不太明确。在年轻的眼睛中,在这个区域有大致从下到上方向的条纹。在老年眼,有相同方向的条纹,但实际上是玻璃体合成区和玻璃体合成区交替存在。在同一只眼睛中,玻璃体凝胶中出现了许多不同水平的池。由于广泛的玻璃体凝结和合并,失去了黄斑前滑囊的定义。结论:采用这种新型的增强玻璃体成像方法,玻璃体似乎具有刻板的变性模式。玻璃体联合的形成可能与玻璃体的组织结构有关,包括玻璃体胶原沉积的模式,以及数十年时间眼球运动的影响。
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