The Role of Vessel Density as Measured by Optical Coherence Tomography Angiography in the Evaluation of Pseudoexfoliative Glaucoma: A Review of the Literature

Chatziralli, Irini; Milionis, Ilias; Christodoulou, Aikaterini; Theodossiadis, Panagiotis; Kitsos, George

doi:10.1007/s40123-022-00483-1

Cited by 3 publications

(1 citation statement)

References 45 publications

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“…Recently, Chatziralli et al found that the peripapillary and MVD were lower in eyes with pseudoexfoliative glaucoma (PXG) [37]. This indicates optic nerve hypoperfusion may play a greater role in patients with PXG.…”

Section: Optical Coherence Tomography Angiography Features Of the Cho...mentioning

confidence: 99%

The Role of Optical Coherence Tomography Angiography in Glaucoma

Kooner¹,

Rehman²,

Suresh³

et al. 2023

Optical Coherence Tomography - Developments and Innovations in Ophthalmology

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Glaucoma is the second leading cause of blindness worldwide, affecting eighty million people globally and three million patients in the USA. Primary open-angle glaucoma, the most common type, is a multifactorial progressive optic nerve neurodegenerative disorder that leads to loss of optic nerve head (ONH) tissue, thinning of the retinal nerve fiber layer, and corresponding visual field (VF) defects with or without elevated intraocular pressure (IOP). Risk factors include older age, black or Hispanic race, elevated IOP, thin central corneal thickness, disk hemorrhage, and low ocular perfusion pressure. The two prevalent theories explaining glaucomatous damage are mechanical (elevated IOP) and vascular (compromised optic nerve perfusion). Current diagnostic methods, such as measuring IOP, VF testing, and ONH evaluation, are subjective and often unreliable. Optical coherence tomography angiography (OCTA) is a rapid, non-invasive imaging modality that provides 3-D, volumetric details of both the structure and vascular networks of the retina and optic nerve. Various researchers have shown that OCTA provides an accurate and objective evaluation of the retina and the optic nerve in glaucoma. This chapter describes the role of OCTA in managing patients with glaucoma.

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Section: Optical Coherence Tomography Angiography Features Of the Cho...mentioning

confidence: 99%

The Role of Optical Coherence Tomography Angiography in Glaucoma

Kooner¹,

Rehman²,

Suresh³

et al. 2023

Optical Coherence Tomography - Developments and Innovations in Ophthalmology

View full text Add to dashboard Cite

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GPU-accelerated image registration algorithm in ophthalmic optical coherence tomography

Bian

Wang²,

Hong³

et al. 2022

Biomed. Opt. Express

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Limited to the power of the light source in ophthalmic optical coherence tomography (OCT), the signal-to-noise ratio (SNR) of the reconstructed images is usually lower than OCT used in other fields. As a result, improvement of the SNR is required. The traditional method is averaging several images at the same lateral position. However, the image registration average costs too much time, which limits its real-time imaging application. In response to this problem, graphics processing unit (GPU)-side kernel functions are applied to accelerate the reconstruction of the OCT signals in this paper. The SNR of the images reconstructed from different numbers of A-scans and B-scans were compared. The results demonstrated that: 1) There is no need to realize the axial registration with every A-scan. The number of the A-scans used to realize axial registration is suitable to set as ∼25, when the A-line speed was set as ∼12.5kHz. 2) On the basis of ensuring the quality of the reconstructed images, the GPU can achieve 43× speedup compared with CPU.

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Optical Coherence Tomography Angiography (OCTA) of the eye: A review on basic principles, advantages, disadvantages and device specifications

Koutsiaris

Batis

Liakopoulou

et al. 2023

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Optical Coherence Tomography Angiography (OCTA) is a relatively new imaging technique in ophthalmology for the visualization of the retinal microcirculation and other tissues of the human eye. This review paper aims to describe the basic definitions and principles of OCT and OCTA in the most straightforward possible language without complex mathematical and engineering analysis. This is done to help health professionals of various disciplines improve their understanding of OCTA and design further clinical research more efficiently. First, the basic technical principles of OCT and OCTA and related terminology are described. Then, a list of OCTA advantages and disadvantages, with a special reference to blood flow quantification limitations. Finally, an updated list of the basic hardware and software specifications of some of the commercially available OCTA devices is presented.

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The Role of Vessel Density as Measured by Optical Coherence Tomography Angiography in the Evaluation of Pseudoexfoliative Glaucoma: A Review of the Literature

Cited by 3 publications

References 45 publications

The Role of Optical Coherence Tomography Angiography in Glaucoma

The Role of Optical Coherence Tomography Angiography in Glaucoma

GPU-accelerated image registration algorithm in ophthalmic optical coherence tomography

Optical Coherence Tomography Angiography (OCTA) of the eye: A review on basic principles, advantages, disadvantages and device specifications

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