Posterior Vitreous Detachment - Optical Coherence Tomography Scans
Symptomatic PVDs are common add-on cases and utilizing the OCT can assist in the diagnosis of the stage of the PVD and appropriate follow up for the condition. When evaluating if a patient has had an PVD, look for the posterior hyaloid membrane and …
Posterior Vitreous Detachment - EyeWiki
Posterior Vitreous Detachment (PVD) is a separation between the posterior vitreous cortex and the neurosensory retina, with the vitreous collapsing anteriorly towards the vitreous base. Changes occur with advancing age in the enzymatic activities in the vitreous and vitreoretinal interface that promote vitreous separation from the inner retinal ...
Posterior Vitreous Detachment: Methods for Detection
Hwang et al 5 found that macular OCT is reasonably effective at diagnosing partial PVD and persistent vitreous adherence, but is less accurate at complete PVD diagnosis. This report provides an important opportunity to evaluate the available literature regarding the methodologies for PVD assessment outside of the operating room.
Using SD-OCT to Detect Complete PVD
2020年2月1日 · Hwang et al. set out to assess whether preoperative spectral-domain optical coherence tomography (SD-OCT) of the macula could accurately detect posterior vitreous detachment (PVD). They found that an accurate determination of attached vitreous can be made if the premacular bursa or posterior vitreous cortex are visualized.
Use of OCT to Identify Complete PVD: Clinical Images
2017年4月1日 · One of the very commonly used modules of OCT can be very useful in unequivocally and very reliably (approximately 95% specificity and sensitivity, based on the author’s experience) demonstrating a PVD. The nerve fiber layer (NFL) module of the OCT (Heidelberg or Zeiss) often demonstrates a line above the retina.
Automated Detection of Posterior Vitreous Detachment on OCT …
2022年11月11日 · In our study, both automated algorithms demonstrated good reliability in PVD detection on OCT imaging volume scans, achieving accuracies of 89.5 % and 90.7%, with sensitivities of 91.9% and 100%, and specificities of 86.1% and 74.5% for the traditional computer vision approach and DL method, respectively.
Evaluating posterior vitreous detachment by widefield 23-mm …
2021年10月5日 · Posterior vitreous detachment (PVD) is a separation between the posterior vitreous cortex and internal limiting membrane. Although PVD was historically considered an...
Multiple approaches exist to diagnose PVD, including slit-lamp biomicroscopy, ultrasonography, and various OCT methods. Each approach has its strengths and limitations. Although the presence of the Weiss ring suggests vitreous detachment from the optic disc, it does not preclude attachment peripheral to the optic nerve without completed PVD.
Posterior Vitreous Detachment - Ophthalmology
2018年4月6日 · Posterior vitreous detachment (PVD) is defined as separation of the posterior vitreous cortex from the inner limiting membrane of the retina.
Acute symptomatic vitreous floaters assessed with ultra-wide …
2021年4月26日 · Peripapillary vitreous opacity (pVO) was searched in Ultra-wide field (UWF) scanning laser ophthalmoscopy and PVD stage was assessed through spectral-domain optical...