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Showing 1 to 16 of 16 for “"Keratoconus"”.
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Pathogenesis, presentation, and treatment of keratoconus within the United States
Keratoconus is a non-inflammatory thinning of the cornea that can lead to an irregular conical shaped protrusion generally of the lower mid-peripheral nasal or temporal hemisphere of the cornea. This degenerative disorder has no known individual cause, nor does it have a known cure. Causes have …
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Literature review in corneal cross linking in pediatric keratoconus cases
Ο κερατόκωνος είναι μια μη φλεγμονώδης εκφύλιση του κερατοειδούς που χαρακτηρίζεται από προοδευτική λέπτυνση και βιομηχανική εξασθένηση. Εκδηλώνεται με ανώμαλο αστιγματισμό, προκαλώντας σοβαρή εξασθένηση της όρασης. Συνήθως ξεκινά κατά την εφηβεία, αλλά συχνά υποδιαγιγνώσκεται σε σύγκριση με τους …
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Outcomes of corneal crosslinking for the treatment of keratoconus at a tertiary South African hospital
… in a cohort of patients with progressive keratoconus (KC), presenting to Groote Schuur Hospital, South Africa. Methods. A retrospective review of patients who underwent A-CXL, using 6.4 mW/cm2 ultraviolet-A irradiation for 15 min, for progressive KC between 1 May 2017 and 1 June 2018. All …
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Evaluation of an Objective Visual Image Quality-Based Method to Identify Spectacle Corrections for Individuals with Keratoconus
… contact lenses cannot be worn. Individuals with keratoconus are often thought of as poor candidates for spectacle correction (with many not receiving a spectacle prescription at all) due to a lack of efficacy of spectacles with this disease. It is our conviction that while spectacles will never …
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Novel Options for the Treatment of Corneal Disease
… cornea crosslinking protocols in patients with keratoconus and to assess the properties of the corneal epithelium on the tomographic, refractive and wavefront properties of the keratoconic cornea. A literature review of transplantation rejection pharmacotherapy, umbilical stem cell treatment, …
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Ultrastructural studies of cornea and sclera
… (J. Physiol. 136: 263. 1951). Examination of keratoconus corneas by the the SEM and TEM and showed abnormal epithelial cells, disrupted lamellae, and abnormally arranged proteoglycans. Analysis of X-ray data proved that stromal thinning in keratoconus was not due to closer fibril packing. Also …
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Outcomes of penetrating keratoplasty at a tertiary institution in South Africa.
… 40% males. The main indications for surgery were keratoconus (58%), corneal scar (21%), regrafts (8%), pseudophakic bullous keratopathy (6%), corneal dystrophies (3%) and pellucid marginal degeneration (1%). The overall graft survival at 1-year follow up was 86%. A higher 1-year graft survival …
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In vivo confocal microscopy of the cornea in health and disease
… cornea and the inherited ectatic condition of keratoconus was correlated with central corneal sensitivity, revealing that nerve density does not change with increasing age and that nerve density is positively correlated with corneal sensitivity. However, in keratoconus, central corneal …
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Clinical Translation of Dynamic OCE for Corneal Biomechanical Assessment
… and 2) mapping biomechanical heterogeneity in keratoconus. Results: Air-pulse generated broadband, high-frequency (>5 kHz) corneal waves were detected with 0.19 nm sensitivity. The air-pulse OCE system achieved ~0.29 kPa mechanical resolution and spatio-mechanical resolutions of 35 μm laterally …
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Neuropathology and sensitivity in the keratoconic cornea
… investigated by aesthesiometry in patients with keratoconusq with and without contact lens wear. Using a matching control group it was established that CTT was significantly higher for the central corneal position in keratoconus. No difference inCTT was found in four peripheral corneal positions …
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Characterizing Corneal Biomechanical Properties Using Dynamic Optical Coherence Elastography
… the hallmark of corneal ectasias, e.g., keratoconus. To implement OCE in the cornea, we developed a micro air-pulse stimulator that provides non-contact, dynamic, spatially localized, tissue stimulation. This dissertation determines a) the acute effects of tissue hydration and UV …
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CONFRONTO DEI RISULTATI VISIVI E TOPOGRAFICI IN PAZIENTI CON CHERATOCONO SOTTOPOSTI A CROSS-LINKING CORNEALE: TECNICA TRADIZIONALE Vs TRANSEPITELIALE
ABSTRACT Obiettivo. Confronto dei risultati visivi e topografici in pazienti con cheratocono in evoluzione, sottoposti a cross-linking corneale (CCL) con procedura epi-off ed epi-on. Materiali e metodi. 72 pazienti; 36 tecnica standard e 36 tecnica transepiteliale, da gennaio 2010 a luglio 2011. …
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Adding Personalized Wavefront Correction to a Scleral Lens After Lens Manufacture
PURPOSE: To date, wavefront-guided scleral lenses have relied on the full-surface method (FSM) of manufacture, which requires the wavefront correction to be integrated into the design of a traditional scleral lens prior to lens manufacture. A novel patch-cutting method (PCM) of manufacture would …
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Contact Lenses as Optical and Protective Element of the Front Ocular Surface. Issues and Future of Contactology in Bulgaria, the Balkans and Europe // Контактните лещи — оптичен и протективен елемент на предната очна повърхност. Контактологията в България, на Балканите и в Европа — проблеми и перспективи
Главна цел на настоящото проучване е да се тестват и установят стандарти за добра контактологична практика в България, съобразени с Европейската и световната контактология чрез: определяне на познанията за контактните лещи сред популацията в България и на Балканите, дефиниране на характеристиките …
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Implante de segmentos Intraestromales y Crosslinking acelerado en el tratamiento del Queratocono pediátrico
Propósito: Describir resultados visuales y topográficos del tratamiento del Queratocono (KC) pediátrico con Implante de Segmentos Intraestromales (ICRS) y Cross-linking acelerado (CXL). Métodos: Estudio observacional descriptivo, donde se revisaron registros médicos de pacientes de Fundonal, en …