@misc{Breher2018, type = {Master Thesis}, author = {Breher, Katharina}, title = {The effect of the optical design of multifocal contact lenses on choroidal thickness}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-6800}, pages = {XXXV, 29 Seiten}, year = {2018}, abstract = {Purpose: Recent studies found a reduction of myopia progression with multifocal contact lenses, however, with yet unclear mechanism. This raises the hypothesis that the addition zones of the multifocal contact lenses induce myopic defocus on the retina, which consequentially leads to choroidal thickening and therefore inhibited eye growth. We tested the effect of the optical design of multifocal contact lenses on choroidal thickness. Methods: 18 myopic students wore four different contact lenses ((1) single-vision lens corrected for distance, (2) single-vision lens with +2.50 D full-field defocus, (3) "Multifocal center-distance" design, addition +2.50 D, (4) "Multifocal center-near" design, addition +2.50 D) for each 30 minutes on their right eye. Automated analysis of the macular choroidal thickness, vitreous chamber depth and eccentric photorefraction were performed before and after each contact lens. Results: Choroidal thickness and vitreous chamber depth showed no significant differences to baseline with none of the contact lenses. Choroidal thickness increased the most with the "Multifocal center-distance" and the full-field defocus lens, followed by the "Multifocal center-near" and the single-vision contact lens (+2.1 ± 11.1 μm, +2.0 ± 11.1 μm, +1.6 ± 11.3 μm, +0.9 ± 11.2 μm, respectively). The "Multifocal center-distance" design showed an overall more myopic refractive profile than the other lenses. Changes of vitreous chamber depth occurred in anti-phase to these of choroidal thickness. Conclusion: Multifocal contact lenses have no significant influence on choroidal thickness and after short-term wear. Therefore, it is assumed that it is not the main contributor to the protective effect of multifocal contact lenses in myopia control.}, language = {en} } @misc{Felgner2020, type = {Master Thesis}, author = {Felgner, Sebastian}, title = {Vergleich und Therapieempfehlung von Benetzungsmitteln nach Inhaltsstoffen und Darreichung}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9879}, school = {Hochschule Aalen}, pages = {xxvi, 47}, year = {2020}, abstract = {Das trockene Auge ist eine komplexe Erkrankung des vorderen Augenabschnitts. Es gibt eine Vielzahl von Ursachen, sowie eine Vielzahl an Therapiem{\"o}glichkeiten. Diese Arbeit befasst sich mit Benetzungsmitteln als Therapieform. Es existieren verschiedene Benetzungsmittel, die sowohl von Augen{\"a}rzten, als auch von Optometristen und Optikern verabreicht werden. Es wird eine {\"U}bersicht {\"u}ber alle Benetzungsmittel erstellt, die in der Schweiz von Optometristen verabreicht werden k{\"o}nnen und ein Schema zur Anwendung je nach Diagnose entwickelt.}, language = {de} } @misc{Gier2020, type = {Master Thesis}, author = {Gier, Yvonne Eva}, title = {Eine Analyse des vorderen Augenabschnitts mit dem OCULUS Pentacam® CSP Report}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9718}, school = {Hochschule Aalen}, pages = {XII, 76}, year = {2020}, abstract = {Eine detaillierte Auswertung des Corneo-Skleral-Profils ist f{\"u}r die Anpassung von weichen Kontaktlinsen und Sklerallinsen von besonderer Relevanz. Das Ziel dieser Studie ist es, das Profil der limbalen Sklera anhand des Zusatzmoduls CSP-Report der OCULUS Pentacam® zu beschreiben. Hierbei soll {\"u}berpr{\"u}ft werden, ob der CSP-Report Ergebnisse bisheriger Studien best{\"a}tigt und somit zuk{\"u}nftig zur Simulation von Sklerallinsen verwendet werden kann.}, language = {de} } @misc{Karmis2020, type = {Master Thesis}, author = {Karmis, Marios}, title = {The use of the direct ophthalmoscope in a "modern" practice and the development of a more digitalized ophthalmoscope as a project}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9725}, pages = {xliii, viii}, year = {2020}, abstract = {The direct ophthalmoscope is a retinal screening tool that has been in existence and development for more than 150 years, yet, the rapid influence of technological evolution in screening tools, has left the direct ophthalmoscope untouched. The main purpose of this master thesis is to determine if the direct ophthalmoscope has reached its maximum potential of development and, additionally, to determine if a further development, including a more electronic input, would be feasible.}, language = {en} } @misc{Mattern2020, type = {Master Thesis}, author = {Mattern, Ann-Isabel Britta}, title = {Low-Level Neural Processing of Photoreceptor Neuron Signals}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9959}, school = {Hochschule Aalen}, pages = {xv, 37 Seiten}, year = {2020}, abstract = {Novel myopia control spectacle lenses induce peripheral contrast reduction via optical diffusion. It is suggested, that the contrast reduction alters retinal processes in the low-level neural circuity, leading to an inhibition of eye growth. The purpose of this thesis is to evaluate the influence of full-field contrast reduction on low-level neural processing of the retina, described by the edge contrast sensitivity.}, language = {en} } @misc{MuellerAmon2020, type = {Master Thesis}, author = {M{\"u}ller-Amon, Niklas}, title = {Ultra-Widefield-cSLO vs. Konventionelles cSLO}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9943}, school = {Hochschule Aalen}, pages = {IX, 88 Seiten}, year = {2020}, abstract = {Demographische Ver{\"a}nderungen durch eine zunehmende Alterung der Gesellschaft und eine Zunahme an Erkrankungen wie der AMD, des Glaukoms und der diabetischen Retinopathie stellen ophthalmologische Versorgungs- und Vorsorgemaßnahmen in Deutschland vor immer gr{\"o}ßere Herausforderungen. Einen wesentlichen Beitrag zur Sicherung der Vorsorgemaßnahmen k{\"o}nnen in der Zukunft Optometristen leisten. Mit Hilfe modernster Technologien, wie dem Ultra-Widefield-cSLO (Optos Daytona, k{\"o}nnen auch bei kleinen Pupillendurchmessern 200° Aufnahmen vom Augenhintergrund erstellt werden.}, language = {de} } @misc{Rothe2015, type = {Master Thesis}, author = {Rothe, Colleen}, title = {Evaluation of Scanpath Comparison Metrics for Static and Dynamic Tasks}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-1633}, school = {Hochschule Aalen}, year = {2015}, abstract = {Purpose Automated scanpath comparison metrics should deliver an objective method to evaluate the similarity of scanpaths. The aim of this thesis is an evaluation of seven existing scanpath comparison metrics in static and dynamic tasks in order to provide a guidline that helps to decide which algorithm has to be chosen for a special kind of task. Methods The applicability of the algorithms for a static, visual search task and a dynamic, interactive video game task as well as their constraints and limitations were tested. Therefore, binocular gaze data were recorded by using the eye tracking system The Eye Tribe (The Eye Tribe ApS, Copenhagen/ Denmark). Objective task performance measures from 21 subjects were used in order to create scanpath groupings for which a relevant effect of dissimilarity was to be expected. Objective task performance measures such as task performance time were statistically evaluated and compared to the results gained by the comparison metrics. Results Four of the algorithms being used successfully identified differences for static and dynamic tasks: MultiMatch, iComp, SubsMatch and the Hidden Markov Model. ScanMatch was very sensitive for the static task but not applicable to the dynamic task whereas FuncSim was suitable for dynamic but not for static tasks. Eyenalysis failed to detect any effect. Conclusion The applicability of scanpath comparison metrics depends on the state of the task, respectively on the kind of experimental set up. In future, the application area for eye tracking will expand and an improvement of automated scanpath comparison metrics is therefore required.}, subject = {Mustererkennung}, language = {en} } @misc{Smuglova2020, type = {Master Thesis}, author = {Smuglova, Ekaterina}, title = {Prevalence of vision disorders among school-aged children in Russia}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-9705}, school = {Hochschule Aalen}, pages = {XVII, 21}, year = {2020}, abstract = {This research project is of particular importance since there is a lack of adequate data on pediatric eye and vision disorders in Russia, particularly in the Volga region. In the present study, we estimate the prevalence of vision disorders among school-aged children who participated in a vision screening program in Samara, Russia. The relationship between learning-related visual dysfunctions is explored in depth, such to illustrate the connection between vision and learning. Hence, a key feature in this study is the inclusion of binocular vision disorders among the conditions tested.}, language = {en} } @misc{vonderHeide2019, type = {Master Thesis}, author = {von der Heide, Andreas}, title = {Fitting Soft Multifocal Customized Contact Lenses for Myopia Control}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-6837}, pages = {LXXIV, 130 Seiten}, year = {2019}, abstract = {The increasing prevalence of myopia throughout the industrialized world in recent decades has caused costs and problems for the eye health. Changed lifestyle and behavior are the main causes. For the pathogenesis of myopia, the amount of time spent outdoor and near activities play an important role. Various options for the treatment of myopia have been described as effective in the literature. Normal single vision glasses and contact lenses can only provide clear vision, but do not reduce myopia progression. Orthokeratology shows a slowing of axial growth, but has an increased risk of infectious keratitis. Low-dose atropine (0.01\%) is currently the best pharmacological option. It proved safe, effective and showed the least rebound effect with negligible side effects. Other options for the treatment of myopia include special glasses, behavioral changes and prolonged outdoor exposure (to prevent the onset of myopia), as well as other methods. An increasingly important myopia management option is multifocal contact lenses, that provide a peripheral treatment zone producing myopic defocus. Such myopia control lenses are available as customized or as daily or monthly lenses. Children benefit from wearing contact lenses more than just having refractive error correction and myopia control, they have a better self-esteem and improved quality of life. The numerous findings on the safety and efficacy of soft multifocal distance center contact lenses in children to reduce the progression of myopia suggest that this modality should be considered as a main treatment option. Less, but similar to orthokeratology, when wearing soft lenses there is a risk of developing potentially serious complications such as microbial keratitis. The introduction of child-appropriate risk minimization strategies, and patient and parent education with regular monitoring is essential and leads to successful contact lens wear. This literature review summarized the actual knowledge about myopia management, prevalence, etiology and the visual and healthy consequences of myopia. The three currently most important strategies for slowing the progression of myopia are soft multifocal distance center contact lenses, Orthokeratology and low-dose atropine ophthalmic drops.}, language = {en} } @misc{Zurbuchen2019, type = {Master Thesis}, author = {Zurbuchen, Lukas}, title = {Die richtige Konsequenz beim UV-Schutz: Myopiekontrolle versus Sonnenlichtbedingte Ver{\"a}nderungen an den Augen. Ein review.}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:944-opus4-6792}, pages = {XVI, 33 Seiten}, year = {2019}, abstract = {Fragestellung: Ist es sinnvoll im Kindesalter restriktiv einen UV-Schutz f{\"u}r die Augen anzuwenden, obwohl UV-Strahlung eine sch{\"u}tzende Wirkung f{\"u}r das Entstehen einer Myopie hat? Einleitung: Die Myopie ist eine typischerweise durch L{\"a}ngenwachstum des Augapfels verursachte Fehlsichtigkeit mit stark steigender Pr{\"a}valenz in den letzten Jahrzenten. UV-Strahlung hat auf die Haut und die Augen eine Vielzahl negativer Auswirkungen. Nebst der akuten Photokeratitis sind Pinguecula, Pterygium, Plattenepithelneoplasie, Katarakt, AMD und maligne Melanome chronische Ver{\"a}nderungen. Andererseits bremst UV-Strahlung das Fortschreiten des Augenl{\"a}ngenwachstums. Modellrechnung: Mittels dem evidenzbasierten Modellrechner kann das Risiko einer Myopie und deren St{\"a}rke anhand des Jahrgangs, der Sonnenschutzanwendung, der famili{\"a}ren Pr{\"a}disposition, der Zeit im Freien und des Bildungsgrades berechnet werden. Gelegentlich angewandter Sonnenschutz hat gegen{\"u}ber h{\"a}ufig angewandtem Sonnenschutz einen Schutzfaktor f{\"u}r die Myopieentstehung von 1.03. Das gr{\"o}sste Risiko einer Myopie kommt von der famili{\"a}ren Pr{\"a}disposition. Diskussion: Zeit im Freien hat einen grossen hemmenden Effekt auf die Myopie, Sonnenschutzanwendung nur einen leicht F{\"o}rdernden. Zudem hat Sonnenschutz einen stark hemmenden Effekt auf UV-bedingte Augen- und Hauterkrankungen. Auf Sonnenschutz der Augen zu verzichten, um eine Myopie zu verhindern oder im Fortschreiten zu bremsen, scheint unvern{\"u}nftig.}, language = {de} }