Optical Coherence Tomography Can Be Used to Assess Glaucomatous Optic Nerve Damage in Most Eyes With High Myopia

Conclusions: For most eyes with high myopia, there is sufficient information in OCT scans to allow for accurate diagnosis of GON. However, the optimal use of the OCT will depend upon training to read OCT scans, which includes taking into consideration myopia related OCT artifacts and segmentation errors, as well as PPA, ERM, PIRD, and TD.
Source: Journal of Glaucoma - Category: Opthalmology Tags: Original Studies Source Type: research

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Precis: Parapapillary choroidal microvasculature dropout (MvD), as observed by optical coherence tomography (OCT) angiography, was useful to detect glaucomatous damage in highly myopic eyes with unreliable OCT results due to segmentation errors. Purpose: The purpose of this study was to evaluate the usefulness of optical coherence tomography angiography (OCTA) imaging of the peripapillary choroidal microvasculature in detecting glaucomatous damage in highly myopic eyes, in cases where evaluating the thickness of the retinal nerve fiber layer (RNFL) is unreliable due to OCT segmentation errors. Materials and Methods: ...
Source: Journal of Glaucoma - Category: Opthalmology Tags: Original Studies Source Type: research
Abstract BACKGROUND/AIMS: To determine the usefulness of peripapillary retinal vessel density (VD) measured using optical coherence tomography (OCT) angiography (OCTA) in the evaluation of glaucomatous visual field damage in highly myopic eyes with primary open-angle glaucoma (POAG). METHODS: This cross-sectional observational study enrolled a total of 124 myopic POAG eyes consisting of 40 eyes showing a segmentation error (SE) in OCT scans and 84 eyes without an SE. The peripapillary retinal VD, circumpapillary retinal nerve fibre layer thickness (RNFLT) and visual field sensitivity loss (VFSL) were assessed...
Source: The British Journal of Ophthalmology - Category: Opthalmology Authors: Tags: Br J Ophthalmol Source Type: research
Conclusions: Malignant glaucoma is a rare complication of laser iridotomy and should be considered in eyes with progressive anterior chamber shallowing and myopia despite normal IOP.
Source: Journal of Glaucoma - Category: Opthalmology Tags: Online Articles: Case Report/Small Case Series Source Type: research
ConclusionTopiramate-induced bilateral acute angle closure glaucoma and myopic shift was due to ciliochoroidal effusion which resulted in thicker lens and shallow anterior chamber. The later was mainly due to anterior displacement of the lens –iris diaphragm.
Source: International Ophthalmology - Category: Opthalmology Source Type: research
Conclusions: This study establishes normative macular GC-IPL and RNFL thickness in children with refractive errors. Our results suggest that high definition optical coherence tomography RNFL parameters and minimum GC-IPL are not affected by AL or myopia in children, and therefore warrants further evaluation in pediatric glaucoma patients.
Source: Journal of Glaucoma - Category: Opthalmology Tags: Original Studies Source Type: research
Purpose: To compare the current (6.3) and a novel software version (6.12) of the RTVue-100 optical coherence tomograph (RTVue-OCT) for ganglion cell complex (GCC) and retinal nerve fiber layer thickness (RNFLT) image segmentation and detection of glaucoma in high myopia. Materials and Methods: RNFLT and GCC scans were acquired with software version 6.3 of the RTVue-OCT on 51 highly myopic eyes (spherical refractive error ≤−6.0 D) of 51 patients, and were analyzed with both the software versions. Twenty-two eyes were nonglaucomatous, 13 were ocular hypertensive and 16 eyes had glaucoma. Results: No difference was...
Source: Journal of Glaucoma - Category: Opthalmology Tags: Online Articles: Original Studies Source Type: research
Conclusions: Repeatabilities of most of the SDOCT parameters in high-myopic subjects were good and comparable to that of emmetropic subjects. This suggests that SDOCT can be useful for following up high-myopic glaucoma patients to detect progression.
Source: Journal of Glaucoma - Category: Opthalmology Tags: Online Articles: Original Studies Source Type: research
CONCLUSIONS: Analyses of optic disc parameters provided by TopSS™ revealed the height of the disc decreased as the myopic refractive error and/or axial length increased. The RNFL bundle became compacted in the thinner disc of the myopic population. This could be an explanation for the fragility of the RNFL in the myopic population. The 12 radial section analyses revealed the shallow cupping at the temporal side in the high-myopic, very-long-axis group. The neuroretinal rim (NRR) height significantly decreased at the superior and inferior sides. These findings suggest that the RNFL bundle should be under high mechanic...
Source: Seminars in Ophthalmology - Category: Opthalmology Tags: Semin Ophthalmol Source Type: research
Conclusion The evaluations of glaucoma in eyes with high myopia using a nonhighly myopic normative database may lead to a frequent misdiagnosis. When evaluating glaucoma in high myopic eyes, the mGCC thickness determined by the long axial length high myopic normative database should be applied.
Source: Taiwan Journal of Ophthalmology - Category: Opthalmology Source Type: research
Conclusions: A hierarchical cluster analysis of SD-OCT scans divided NTG patients into 3 groups based upon ONH parameters and RNFL thicknesses. It is anticipated that the small disc area group comprised of younger and more myopic patients may show unique features unlike the other 2 groups.
Source: Journal of Glaucoma - Category: Opthalmology Tags: Original Studies Source Type: research
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