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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
251

Oxygen therapy in ophthalmology: a review of the literature and preliminary exploration of its efficacy in treating ocular ischemia

Balasundaram, Arvind 14 June 2019 (has links)
BACKGROUND: Oxygen therapy has been widely used for a variety of systemic conditions. The ischemic basis of many ocular conditions provides a basis for oxygen’s application in this area as well. REVIEW: Literature was reviewed to evaluate the efficacy of oxygen therapy in treating inner retinal ischemia (diabetic retinopathy, vein occlusions, artery occlusions, and radiation retinopathy), outer retinal ischemia (retinal detachment, macular holes, and macular degeneration), nerve ischemia (ischemic optic neuropathy, diabetic papillopathy, and ischemic third nerve palsy), and ocular ischemia (ocular ischemic syndrome and retinopathy of prematurity). Published studies support the use of oxygen for a range of ocular conditions including diabetic retinopathy, retinal detachments, and macular holes. For other conditions where autoregulation may limit flow during hyperoxia, isocapnic hyperoxia provides a method to circumvent these limitations. METHODS: One radiation retinopathy patient received a three-hour normobaric hyperoxia trial. Oxygen was delivered by an oxygen concentrator through a face mask at a rate of five liters per minute. Early Treatment Diabetic Retinopathy Study (ETDRS) visual acuity, contrast sensitivity, intraocular pressure, and optical coherence tomography testing were obtained immediately preceding and following the trial to determine any changes. RESULTS: The results show slightly improved ETDRS visual acuity and contrast sensitivity score. Retinal edema in the area of greatest thickness showed a decrease of 3.1%, a larger change than would be expected in a healthy, control eye. CONCLUSIONS: The results of the three-hour normobaric hyperoxia trial suggest that oxygen is effective in reducing retinal edema. Visual acuity was not impacted as greatly, but that may be a result of the specific presentation of this radiation retinopathy patient. / 2021-06-14T00:00:00Z
252

The effect of complement factor H Y402H polymorphism on visual outcomes after anti-VEGF treatment of exudative AMD

Chakuroff, Carolyn January 2018 (has links)
No description available.
253

Contrast Sensitivity and Visual Acuity among the Elderly

Osman, Mawada 06 October 2020 (has links)
No description available.
254

Patienters erfarenheter av intravitreal injektionsbehandling med anti-VEGF : En systematisk integrativ litteraturstudie

Lennartsson, Betty January 2023 (has links)
Bakgrund: Intravitreala injektioners användning inom oftalmologin har ökat markant under de senaste två decennierna tack vare uppkomsten av vaskulära endoteliala tillväxtfaktor-hämmare (Anti-VEGF), vilka behandlar ögonsjukdomar orsakade av koroidal neovaskularisering. Behandlingens effektivitet möjliggör att patienternas syn bevaras. Men varje behandling i sig utgör även en risk för komplikationer, såsom den synhotande infektionen endoftalmit. Ögonsjuksköterskor är aktiva i behandling och är dessutom ansvariga för att tillgodose patienternas omvårdnadsbehov. Syfte: Att beskriva patienters erfarenheter av att få intravitreal injektionsbehandling med Anti-VEGF. Metod: Studien genomfördes som en systematisk integrativ litteraturstudie enligt Whittemore och Knafl. Sökningar genomfördes i Pubmed, CINAHL och PsycInfo. De inkluderade artiklarnas kvalité bedömdes med kvalitetsbedömningsinstrumentet Critical Appraisal Skills Program och med ”Checklista för att bedöma kvaliteten på en enkätstudie”. Resultat: Totalt inkluderades 11 artiklar (4 med kvalitativ design och 7 med kvantitativ design). Analysen gav upphov till två huvudkategorier ”Patienternas erfarenheter av injektionsproceduren” uppdelad i innan, under och efter, samt ”Patienters erfarenheter kring injektionsbehandlingen” där behandlingens implikationer på liv, livskvalité och livsstil beskrivs.  Slutsats: Behandlingen med intravitreala injektioner ger upphov till negativa fysiska, psykiska och sociala erfarenheter, men även till positiva erfarenheter relaterade till behandlings effekt. Kunskapen om dessa kan hjälpa ögonsjuksköterskan att lättare uppmärksamma patienternas omvårdnadsbehov för att kunna tillgodose dessa.   Nyckelord: intravitreal injektion, omvårdnad, patient erfarenhet, ögonsjuksköterskor.
255

The photopic ERG luminance-response function: description, physiological basis and clinical application

Garon, Marie-Lou January 2010 (has links)
No description available.
256

Pattern reversal visual evoked potentials in children with strabismic and with anisometropic amblyopia

Beneish, Raquel Gabriela January 1988 (has links)
No description available.
257

Novel diagnostic ocular toxoplasmosis biomarkers

Isenberg, Jordan January 2010 (has links)
No description available.
258

The role of natural image structure in visual detection of photometric changes

Yoonessi, Ali January 2008 (has links)
No description available.
259

Screening for glaucoma in high risk populations using the Stratus optical coherence tomography

Li, Gisèle January 2010 (has links)
No description available.
260

Evaluation of the mechanism of hypersensitivity to contact lens preseratives

Cai, Feng January 1988 (has links)
No description available.

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