scholarly journals Evaluation of corneal backscatter using Scheimpflug imaging in Fuchs' endothelial corneal dystrophy

2022 ◽  
Vol 100 (S267) ◽  
Author(s):  
Eva Josefina Núñez Moscarda ◽  
Ana Boned‐Murillo ◽  
Mª Dolores Díaz‐Barreda ◽  
Ismael Bakkali El Bakkali ◽  
Guillermo Pérez Rivasés ◽  
...  
Keyword(s):  
Corneal Dystrophy ◽  
Scheimpflug Imaging

scholarly journals Corneal Backscatters as an Objective Index for Assessing Fuchs’ Endothelial Corneal Dystrophy: A Pilot Study

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Hsueh-Yen Chu ◽  
Ching-Hsi Hsiao ◽  
Phil Yeong-Fong Chen ◽  
David Hui-Kang Ma ◽  
Chee-Jen Chang ◽  
...  
Keyword(s):  
Pilot Study ◽  
Corneal Thickness ◽  
Corneal Edema ◽  
Normal Subjects ◽  
Corneal Dystrophy ◽  
Retrospective Case ◽  
Area Density ◽  
Scheimpflug Imaging ◽  
Membrane Density ◽  
Morphological Patterns

Purpose. To provide an objective, quantitative approach for monitoring Fuchs’ endothelial corneal dystrophy (FECD), with Scheimpflug imaging. Design. This is a retrospective case-control pilot study. Methods. The study group consisted of 53 eyes in 27 patients diagnosed with FECD, with normal subjects paired as control. Main outcome measures were corneal thickness, morphological patterns on densitograms, and indices of corneal density including the average area density (mean AD) and the average ratio of Descemet’s membrane density versus area density (DM/AD) in Pentacam Scheimpflug images. Results. There were no significant differences in age and corneal thickness between FECD and normal groups. Morphologically, hanging-hammock patterns were noted on the densitograms of FECD patients, which were different from the high-back chair patterns in normal subjects. Quantitatively, mean AD and DM/AD were both elevated in FECD patients as compared with normal subjects (P=0.01 and 0.025, resp.). In addition, FECD patients with corneal edema had significantly higher mean AD (P=0.018) than those without corneal edema. Conclusions. This pilot study shows that Pentacam system provides an objective, quantitative way to approach FECD corneas. It can assist ophthalmologists in detecting the early change and in monitoring disease progression of FECD. Further studies are needed to consolidate the findings.

DMEK, DSAEK in the treatment of endothelial-epithelial corneal dystrophy

2020 ◽  
pp. 114-115
Author(s):  
D.A. Krivolapova ◽  
◽  
G.A. Yessenzhan ◽  
B.I. Issergepova ◽  
A.K. Kanatbekova ◽  
...  
Keyword(s):  
Corneal Dystrophy ◽  
Endothelial Keratoplasty

Актуальность. DMEK (descemet membraneendothelial keratoplasty) и DSAEK (Descemet’sstripping automated endothelial keratoplasty) в лечении эндотелиально-эпителиальных дистрофий(ЭЭД) – наиболее высокотехнологичный, малоинвазивный, патогенетически ориентированный метод трансплантации роговицы. Учитывая отсутствие тенденции к снижению частоты ЭЭД во всем мире, представляется актуальным изучение эффективности современных методов эндотелиальной кератопластики. Цель. Оценка клинической эффективностиDMEK, DSAEK у больных с эндотелиально-эпителиальной дистрофией роговицы. Материал и методы. В исследование включены7 пациентов (4 женщины и 3 мужчин), прооперированные в КазНИИ ГБ в период с 2018 по 2019 г. Средний срок наблюдения – 12,6 месяцев. Средний возраст пациентов на момент операции – 69,57лет и варьировал от 52 до 79 лет. Для объективной оценки структуры роговицы, пахиметрии использовался метод оптической когерентной томографии Spectralis роговичный модуль. Результаты. Показанием к проведению эндотелиальной кератопластики в 1 случае (1 глаз)явилась первичная дистрофия Фукса, во всех остальных случаях – вторичная ЭЭД в исходе предшествующей хирургии катаракты. Проведено 4DSAEK (у 1 пациента повторно) и 4 DMEK; операции во всех случаях произведены без осложнений.В одном случае DSAEK на 3-и сутки наблюдалось частичное отслоение лоскута в пределах 1 квадранта, пациенту в условиях операционной введен воздух, достигнуто полное прилегание лоскута. Восстановление прозрачности роговицы достигнуто во всех случаях. Острота зрения до операции составила в среднем, 0,08; на 10 сутки после операции наблюдалось повышение остроты зрения в среднем до 0,2 (от 0,1 до 0,3). Снижение отека роговицы отмечалось, в среднем, через 1–2 мес. после операции. Пахиметрия до операции составила от 570 до 800 мкн в оптической зоне, через 3 мес. эти данные составили от 550 до 680 мкн. Выводы. DMEK и DSAEK – эффективный, безопасный, малоинвазивный метод трансплантации роговицы, с минимальным реабилитационным периодом – предпочтительный в случаях декомпенсации эндотелия.

Oxidative Stress, Ocular Disease and Diabetes Retinopathy

2019 ◽  
Vol 24 (40) ◽  
pp. 4726-4741 ◽  
Author(s):  
Orathai Tangvarasittichai ◽  
Surapon Tangvarasittichai
Keyword(s):  
Oxidative Stress ◽  
Dna Damage ◽  
Cell Death ◽  
Protein Modification ◽  
Morphological Changes ◽  
Corneal Dystrophy ◽  
Age Related Macular Degeneration ◽  
Ocular Diseases ◽  
Retinal Light Damage ◽  
Age Related

Background: Oxidative stress is caused by free radicals or oxidant productions, including lipid peroxidation, protein modification, DNA damage and apoptosis or cell death and results in cellular degeneration and neurodegeneration from damage to macromolecules. Results: Accumulation of the DNA damage (8HOdG) products and the end products of LPO (including aldehyde, diene, triene conjugates and Schiff’s bases) were noted in the research studies. Significantly higher levels of these products in comparison with the controls were observed. Oxidative stress induced changes to ocular cells and tissues. Typical changes include ECM accumulation, cell dysfunction, cell death, advanced senescence, disarrangement or rearrangement of the cytoskeleton and released inflammatory cytokines. It is involved in ocular diseases, including keratoconus, Fuchs endothelial corneal dystrophy, and granular corneal dystrophy type 2, cataract, age-related macular degeneration, primary open-angle glaucoma, retinal light damage, and retinopathy of prematurity. These ocular diseases are the cause of irreversible blindness worldwide. Conclusions: Oxidative stress, inflammation and autophagy are implicated in biochemical and morphological changes in these ocular tissues. The development of therapy is a major target for the management care of these ocular diseases.

Accumulation of HDL Apolipoproteins Accompanies Abnormal Cholesterol Accumulation in Schnyder's Corneal Dystrophy

1996 ◽  
Vol 16 (8) ◽  
pp. 992-999 ◽  
Author(s):  
Paulette M. Gaynor ◽  
Wei-Yang Zhang ◽  
Jayne S. Weiss ◽  
Sonia I. Skarlatos ◽  
Merlyn M. Rodrigues ◽  
...  
Keyword(s):  
Corneal Dystrophy ◽  
Cholesterol Accumulation

Phenotype of macular corneal dystrophy in Labrador Retrievers: A multicenter study

2019 ◽  
Vol 22 (3) ◽  
pp. 294-304
Author(s):  
Claudia Busse ◽  
Christiane Kafarnik ◽  
Rose Linn‐Pearl ◽  
Christelle Volmer ◽  
Kaspar Matiasek ◽  
...  
Keyword(s):  
Multicenter Study ◽  
Corneal Dystrophy ◽  
Labrador Retrievers ◽  
Macular Corneal Dystrophy

A novel missense TGFBI variant p.(Ser591Phe) in a Finnish family with variant lattice corneal dystrophy

2021 ◽  
pp. 112067212199730
Author(s):  
Aino Maaria Jaakkola ◽  
Petri J Järventausta ◽  
Reetta-Stiina Järvinen ◽  
Pauliina Repo ◽  
Tero T Kivelä ◽  
...  
Keyword(s):  
Transforming Growth Factor Beta ◽  
Transforming Growth Factor ◽  
Late Onset ◽  
Family Members ◽  
Anterior Segment ◽  
Corneal Dystrophy ◽  
Ophthalmological Examination ◽  
Lattice Corneal Dystrophy ◽  
Tgfbi Gene ◽  
Novel Variant

Introduction: We describe the phenotype of a variant lattice corneal dystrophy (LCD) potentially caused by a novel variant c.1772C>T p.(Ser591Phe) in exon 13 of the transforming growth factor beta-induced (TGFBI) gene. Case report: The proband, a 71-year-old woman referred because of bilateral LCD, first seen at the age of 65 years, with recent progressive symptoms, underwent a clinical ophthalmological examination, anterior segment optical coherence tomography and confocal microscopy. Additionally, three siblings and three children were examined. The identified TGFBI variant was screened in six family members using Sanger sequencing. A corneal dystrophy gene screen was performed for the proband. Translucent subepithelial irregularities and central to midperipheral stubby branching corneal stromal lattice lines, asymmetric between the right and the left eye, were visible and resulted in mild deterioration of vision in one eye. Genetic testing revealed a novel variant c.1772C>T in TGFBI, leading to the amino acid change p.(Ser591Phe). One daughter carried the same variant but had only thick stromal nerve fibres at the age of 49 years. The other family members neither had corneal abnormalities nor carried the variant. No keratoplasty is yet planned for the proband. Conclusions: We classify the novel variant in TGFBI as possibly pathogenic, potentially causing the late-onset, asymmetric variant LCD. Our findings add to the growing number of TGFBI variants associated with a spectrum of phenotypes of variant LCD.

scholarly journals Cell cycle re-entry and arrest in G2/M phase induces senescence and fibrosis in Fuchs Endothelial Corneal Dystrophy

2021 ◽  
Author(s):  
Tomas L. White ◽  
Neha Deshpande ◽  
Varun Kumar ◽  
Alex G. Gauthier ◽  
Ula V. Jurkunas
Keyword(s):  
Cell Cycle ◽  
Corneal Dystrophy ◽  
M Phase

scholarly journals Influence of rebubbling on anterior segment parameters and refractive outcomes in eyes with DMEK for Fuchs endothelial dystrophy

2021 ◽  
Author(s):  
Bishr Agha ◽  
Raimund Forster ◽  
Thomas Kohnen ◽  
Ingo Schmack
Keyword(s):  
Visual Acuity ◽  
Endothelial Cell ◽  
Anterior Segment ◽  
Cell Loss ◽  
Endothelial Cell Loss ◽  
Refractive Outcome ◽  
Refractive Outcomes ◽  
Scheimpflug Imaging ◽  
Fuchs Endothelial Dystrophy ◽  
Anterior Segment Parameters

Abstract Purpose To evaluate the potential impact of rebubbling on the anterior segment parameters and refractive outcomes in patients with graft detachment following uneventful DMEK for Fuchs endothelial dystrophy (FED). Methods Retrospective institutional cohort study of comparing 34 eyes of 31 patients with rebubbling for graft detachment following Descemet membrane endothelial keratoplasty (DMEK) to 33 eyes of 28 patients with uneventful DMEK. Main outcome parameters were various corneal parameters obtained by Scheimpflug imaging, refractive outcome, corrected distance visual acuity (CDVA), and endothelial cell density (ECD). Results Anterior and posterior corneal astigmatism, corneal densitometry, central corneal thickness, and anterior chamber depth and volume showed no significant differences. Preoperative distribution of astigmatism axis orientations showed a high proportion of anterior corneal with-the-rule astigmatism (71%) in eyes requiring rebubbling. Mean postoperative cylinder in the rebubbling group (1.21 ± 0.85 D) was significantly higher compared to the controls (p = 0.04), while differences in spherical equivalent (SE) were insignificant (p = 0.24). Postoperative CDVA was 0.11 ± 0.11 in the control group compared to 0.21 ± 0.17 in the rebubbling group (p = 0.03). Eyes with subsequent rebubbling demonstrated a significantly higher endothelial cell loss (56% versus 37%) (p < 0.001). Conclusion Apart from higher cylinder values, refractive outcome and corneal parameters assessed by Scheimpflug imaging were comparable in eyes with rebubbling and controls. However, a reduced visual acuity and an increased endothelial cell loss should be taken into consideration prior to rebubbling especially in eyes with circumscribed graft detachment.

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