Posterior Precortical Vitreous Pocket in Children

Park, Kyung-Ah; Oh, Sei Yeul

doi:10.3109/02713683.2014.971932

Cited by 3 publications

(7 citation statements)

References 16 publications

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“…However, the majority of PPVPs were boat-shaped when the participants were seated, which was similar to the ndings in previous studies [2,10,11,13,20] . A total of 81.94% of binocular participants had the same PPVP morphology in both eyes, which was consistent with previous studies [11,21] . In addition, we observed oval PPVPs and hook-shaped PPVPs, suggesting that the morphology of PPVPs was diverse.…”

Section: Discussionsupporting

confidence: 91%

Characteristics of Posterior Precortical Vitreous Pockets Visualized by Swept-Source OCT and en face OCT

Du,

An,

Zhang

et al. 2023

Preprint

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Purpose To determine the characteristics of posterior precortical vitreous pockets (PPVPs) and to observe vitreous changes in myopic eyes by swept-source optical coherence tomography (SS-OCT) and en face imaging in a cohort of the Chinese Han population. Methods This was a cross-sectional study. Volunteers (235 participants, 374 eyes) received an SS-OCT examination. The heights and widths of the PPVPs were measured by SS-OCT. The area of the PPVPs was measured en face. The relationships between PPVP size and sex, age, axial length (AL) and spherical equivalent (SE) were evaluated. Results The mean width and height were 6711.64 ± 1241.87 µm and 662.47 ± 326.39 µm, respectively. The area of the PPVPs was 30.296 ± 9.114 mm2. Boat-shaped, oval, and hook-shaped PPVPs were observed in 73.26%, 21.12%, and 5.62% of all eyes, respectively; 73.53% of all PPVPs had channels communicating with Cloquet’s tubes. There was a significant difference in the PPVP width among the different age groups (F = 7.76, P = 0.002). Age had a positive correlation with the PPVP width (r = 0.526, P = 0.001). The PPVP height showed significant differences among the different age groups (F = 3.098, P = 0.027). However, there were no correlations between the AL and the PPVP width or height (P = 0.280; P = 0.328, P = 0.057, respectively). Conclusions Age and myopia affect the size of PPVPs. SS-OCT greatly facilitates visualization of the complex structure of the vitreous. Brief Summary Statement: Characteristics of PPVPs

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Section: Discussionsupporting

confidence: 91%

Characteristics of Posterior Precortical Vitreous Pockets Visualized by Swept-Source OCT and en face OCT

Du,

An,

Zhang

et al. 2023

Preprint

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“…2,7,12 In vivo study has recently become feasible with the advent of OCT, but even then, this work has been limited by resolution and scan volume. 6,[13][14][15][16][17][18][19][20][21][22] Current SS-OCT technology has made it possible not only to scan both young children and adults in a fraction of the time, but with unprecedented resolution, volume and sampling density.…”

Section: Discussionmentioning

confidence: 99%

OCT En Face Analysis of the Posterior Vitreous Reveals Topographic Relationships among Premacular Bursa, Prevascular Fissures, and Cisterns

Leong

Fragiotta

Kaden

et al. 2020

Ophthalmology Retina

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“…Noninvasive imaging of posterior vitreous structures, such as AM and BP, became possible with the introduction of spectral domain OCT [ 6 ]. Although most of the commercially available spectral domain OCT machines are best employed to visualize retina structures, imaging of the choroid and vitreous is also possible using a modified scanning technique [ 6 8 12 13 ]. Moreover, high-quality vitreous images can be obtained without special SS-OCT measures, because of SS-OCT's longer wavelength, fast scanning speed, and easy software enhancement [ 5 14 ].…”

Section: Discussionmentioning

confidence: 99%

“…Our BP detection rate was 91.5% in eyes without PVD, 21% in eyes with partial PVD, and 0% in eyes with complete PVD, because posterior vitreous structures cannot be scanned because they move anteriorly with increased posterior vitreous detachment. Park and Oh [ 8 ] have shown that the proportion of temporal length to the entire horizontal diameter was significantly greater in adults than in children, and they found a positive correlation between age and proportion, suggesting progressive temporal extension of BP during childhood growth. BP and AM were connected in most cases, suggesting a direct anteroposterior connection between the retroretinal and premacular spaces [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

“…One is the area of Martegiani (AM) at the posterior end of Cloquet's canal, which forms from the regressed hyaloid artery during fetal development and is located over the optic disc. The other is bursa premacularis (BP), which is also known as the posterior precortical vitreous pocket (PPVP) and is located above the macula [ 5 6 7 8 9 ]. The presence of BP has been confirmed by various methods, including Indian-ink injection in the postmortem eye [ 10 ], triamcinolone injection during vitrectomy [ 11 ], and, more recently, OCT [ 5 6 7 ].…”

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confidence: 99%

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

Park

Lee

Pak

2018

Korean J Ophthalmol

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PurposeTo evaluate posterior vitreous structures using swept-source (SS) optical coherence tomography (OCT) with en face imaging.MethodsWe retrospectively reviewed OCT images of healthy individuals who did not have intra-ocular disease. We obtained high-definition horizontal and vertical line scans crossing the fovea and 3D scans using SS-OCT, with the 3D scan centered between the fovea and the optic-nerve head. An enhanced vitreous visualization function was used to highlight vitreous structures. En face mode was used to measure the area of Martegiani (AM) and bursa premacularis (BP). We performed all measurements using a built-in function of the viewing software.ResultsWe enrolled 24 eyes from 12 healthy individuals. The mean patient age was 28.7 ± 4.6 years (range, 24 to 39 years). The mean AM and BP areas were 5.73 ± 0.88 and 18.76 ± 6.95 mm2, respectively. In en face imaging, AM shape was most frequently a vertical oval (18 / 22, 81.8%), while the predominant BP shape was round (16 / 20, 80.0%). AM was in contact with the optic disc, either at the temporal-disc margin (13 eyes, 59.1%) or the nasal optic-disc margin (9 eyes, 40.9%).ConclusionsPosterior vitreous structures, such as AM and BP, were readily visualized using en face imaging with SS-OCT. Investigating normal vitreous configuration might help in understanding changes in vitreous structures associated with retinal pathology.

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Posterior Precortical Vitreous Pocket in Children

Abstract: The results suggest a progressive temporal extension of PPVP during childhood.

Cited by 3 publications

References 16 publications

Characteristics of Posterior Precortical Vitreous Pockets Visualized by Swept-Source OCT and en face OCT

Characteristics of Posterior Precortical Vitreous Pockets Visualized by Swept-Source OCT and en face OCT

OCT En Face Analysis of the Posterior Vitreous Reveals Topographic Relationships among Premacular Bursa, Prevascular Fissures, and Cisterns

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

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