Optometry & Contact Lenses最新文献

{"title":"Änderung der objektiv gemessenen bulbären Rötung und der Symptome nach Umstellung auf Tageslinsenmaterial mit Wassergradient","authors":"Sebastian Marx, K. Keller, S. Schwarz, W. Sickenberger","doi":"10.54352/dozv.iyge3587","DOIUrl":"https://doi.org/10.54352/dozv.iyge3587","url":null,"abstract":"Purpose. The purpose of this pilot study is to identify if fine graduated differences in objective redness of the eye exist in a cohort of non-symptomatic contact lens wearers. The pri- mary objective is the evaluation of change in bulbar redness when a non-symptomatic, 2-4 week contact lens wearer, is refitted to a Delefilcon A lens material. Secondary objectives include the determination of limbal redness, corneal and bulbar staining, and wearing comfort. Material and Methods. 52 habitual, asymptomatic, full time soft contact lens wearers were enrolled in a multicenter study. At the baseline visit, bulbar and limbal redness were measured objectively using the Redness-Scan of the Keratograph 5M (K5M). Habitual lenses, lens care type, comfort ratings and staining data were captured at baseline visit. A wash out phase of 6 ± 1 days was conducted in which the subjects did not wear any lenses before Delefilcon A lenses were dispensed at visit 2 (V2) for a wearing period of 26 ± 5 days. A follow up visit was planned after 6 ± 1 days from V2 and a final visit after additional 20 ± 4 days. During visits 2, 3 and 4, the same objective measurements were carried out and corresponding subjective data was captured. ANOVA, t-test for paired sam- ples, homogeneity test and Wilcoxon signed rank test were used for the statistical analyses. Results. A total number of 49 complete data sets were suc- cessfully evaluated. Objectively measured bulbar redness decreased by 0.121 (p = 0.003) from the baseline compared to the final visit. In the same period, limbal redness reduced by 0.151 (p = 0.000). In addition, an increase from 36 at baseline to 47 at V4 grade 0 ratings regarding corneal staining, and from 32 to 39 regarding bulbar staining was found, respec- tively. The averaged comfort rating with habitual lenses was 79.7 ± 16.6 compared to the final visit 89.0 ± 10.8. Conclusion. In the context of classic subjective grading hab- its which use fully grades in 1.0 steps, the objective Red- ness-Scan was able to detect finely graduated differences in the cohort of non-symptomatic wearers. The daily disposable test product delivers benefits to wearers in the form of re- duced bulbar and limbal redness, reduced corneal and bulbar staining, and statistically and clinically increased contact lens wearing comfort. Keywords contact lens, bulbar redness, wearing comfort","PeriodicalId":347784,"journal":{"name":"Optometry & Contact Lenses","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116687253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Blickrichtungsabhängige Visusbestimmung bei korrekt und falsch zentrierten asphärischen Einstärkenbrillengläsern","authors":"Nicole Rinke, S. Reiß, Christoph von Handorff","doi":"10.54352/dozv.mcvt2908","DOIUrl":"https://doi.org/10.54352/dozv.mcvt2908","url":null,"abstract":"Purpose. To investigate the effect on visual acuity of dis- regarding the centre of rotation requirement when using single vision aspheric lenses for correction of moderate to high hyperopes. Material and Methods. Two aspheric single vision lenses are fitted in each eye of 15 hyperopic subjects. One lens is exactly centred, the other lens is horizontally decentrated five milli- metres temporally. The interpolated LogMAR is then deter- mined in five different directions of gaze. The extent to which the LogMAR achieved differs between the lens with the observed centre of rotation requirement and the disregarded centre of rotation requirement in the individual directions of gaze is then examined. In addition, the influence of age is investigated. The results of the sub-samples “Age < 50 years” and “Age ≥ 50 years” are analysed descriptively. A clinically significant difference is defined as half a visual acuity level (corresponds to 0.05 LogMAR). Results. Significant differences in LogMAR between exact and incorrect centring could be determined for 30° nasal gaze (-0.09 LogMAR) and for 0° gaze through the lens (-0.07 LogMAR). Visual acuity was better with the precisely centred lens in each case. When testing for differences in LogMAR between the defined age-dependent subsamples, no signif- icant differences could be determined. Conclusion. The results show that the aberrations astigma- tism of oblique bundles and the image field curvature with the resulting deviation from refractive accuracy have less influence on visual acuity than previously assumed. Keywords spectacle lens centration, aspheric single vision lenses, centre of rotation requirement, astigmatism of oblique incidence, refractive accuracy","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124287410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Die Anwendung des telezentrischen Strahlenganges in der Augenoptik zur Bestimmung des Hornhautscheitelabstandes","authors":"Julien Fourmont, Ulrike Grömping, S. Reiß","doi":"10.54352/dozv.mmha1252","DOIUrl":"https://doi.org/10.54352/dozv.mmha1252","url":null,"abstract":"Purpose. Nowadays, a video centering system is often used to determine centering data. Nevertheless, these are often additionally checked manually afterwards. An important pa- rameter is the vertex distance (VD). This is often determined using a measuring ruler with a millimeter scale. Also during refraction a classical millimeter scale on the trial frame is used to determine the VD. Due to the difference between the location of the measuring scale used and the location of the real VD, there is a systematic measurement error. Material and Methods. At the Berlin University of Applied Sciences (BHT), a measurement tool was developed on the basis of an object-side telecentric beam path, which enables the determination of the real VD independent of distance. The validation of this measurement tool was performed in two different series of measurement. In the first series of tests, the measurements were performed on test subjects using a measuring tool, a video centering system (“visuReal” from Hoya) and a measuring ruler, and the results were compared. In the second series, VD measurements were taken using the measuring tool and millimeter scale on defined test sections for objectification purposes. Results. In the first series of measurements, the VD values obtained using the millimeter scale were lower than those de- termined with the other instruments (statistically significant at the 5% level with Friedman test). The difference between the VD values of the measuring tool and the video centering system, on the other hand, was small on average and not statistically significant. In the series of measurements on de- fined test sections, the measuring tool showed a significantly better approximation to the actual length of the defined test distance than the measuring ruler. Conclusion. The series of measurements show that the de- termination of the VD by the measuring tool and the video centering system are very similar on average and that the measured values of the measuring tool are closer to the orig- inal value than the measured values of the measuring ruler. Thus, the determination of the VD by means of a simple scale should be dispensed with in the future. Keywords telecentric beam path, vertex distance, vertex distance meas- urement, trial frame, refraction","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115238160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eine neue Methode zur Bestimmung der Skleralform","authors":"Manfred Bufler","doi":"10.54352/dozv.tasa9619","DOIUrl":"https://doi.org/10.54352/dozv.tasa9619","url":null,"abstract":"Purpose. The aim of the present theoretical modelling study is to improve the fitting of scleral lenses by means of a novel determination of the scleral shape of the eye. Material and Methods. . The movement of scleral lenses and soft lenses is affected by scleral shape around the limbus. Based on this, it is important to take a closer look at the edge of the sclera. An area of 4 mm in diameter around the limbus is considered as a suitable area for shape fitting, which is shown by 44 profile photographs. As a first step, a straight line (y = m • x + b) was fitted on scleral data of 44 perpendic- ular cuts. Then, these measuring points were rotated around the first “scleral measuring point after the limbus” (angle of rotation = − arctan (m)) so that all measuring points were horizontal. A parabola was then fitted as best as possible (y = a • x2 + b • x + c) to the rotated measuring points. The parabola coefficient a or “pca value” plays a central role as a shape criterion of the corneo-scleral profile (CSP). A pca value a ≥ 0.1 means the CSP is a concave parabola, while a ≤ −0.1 implies that the CSP is a convex one. If the pca value is between −0.1 < a < 0.1, the CSP is a straight line. Results. Based on the 44 profile section photos, 85.8 % of the CSPs were straight, 11.1 % were convex and 3.1 % were concave parabolic shapes. The probability of determining a parabolic CSP section is about 18.5 % (normal distribution, the normal distribution test for the calculated pca values shows p < 0.01). Conclusion. A specification of the corneo-scleral-profile (CSP) with the corresponding scleral angle “alpha”, gives significantly more information about the scleral shape than if only one of the two parameters is specified. Furthermore, this simplifies the determination of the geometry of contact lenses with large diameters, especially scleral lenses. Keywords Soft contact lenses, scleral lenses, corneo-scleral profile, scleral shape, sclera","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114302897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erfahrungen von Menschen mit altersbedingter Makuladegeneration im täglichen Leben und mit der Gesundheitsversorgung in Deutschland","authors":"A. Thier, C. Wolfram, O. Zeitz, C. Holmberg","doi":"10.54352/dozv.pgfo3997","DOIUrl":"https://doi.org/10.54352/dozv.pgfo3997","url":null,"abstract":"Purpose. Health care for people with age-related macular degeneration (AMD) and visual impairment/blindness is complicated as it includes both medical care and low vision care offered by various providers without established coordination. This qualitative analysis aims at exploring experiences of people with AMD in daily life and with their health care including their information and help needs. Material and Methods. This analysis is part of the qualitative arm of a wider mixed methods research project. As a sampling strategy, we pursued the goal of maximum variation. We conducted narrative, semi-structured interviews with people diagnosed with AMD all over Germany. The interviews were thematically analysed. Results. Twenty-nine interview partners were included in this analysis. Experiencing AMD in everyday life meant (i) the perception of visual changes, (ii) dealing with blindness per- ceived as stigma, and (iii) social consequences. Their health care experiences were shaped by their individual information needs, questioning their communication with their ophthal- mologists, increased time required for medical examinations and a great logistical effort in order to access both medical as well as low vision care. Support services in the framework of low vison care were well appreciated by our interviewees. Conclusion. People with AMD have individual information and help needs that must to be addressed and acknowledged in health care. Keywords age-related macular degeneration, patients’ experiences, low vision care, qualitative research, information needs","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127202910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Neue Entwicklungen in der Therapie der trockenen und neovaskulären altersabhängigen Makuladegeneration","authors":"Leon von der Emde, F. Holz, T. Ach","doi":"10.54352/dozv.ihyq1049","DOIUrl":"https://doi.org/10.54352/dozv.ihyq1049","url":null,"abstract":"Purpose. The aim of this article is to summarise currently approved and future therapy options for age-related macular degeneration (AMD). Further, we discuss how more detailed phenotyping of AMD using multimodal imaging will help identifying novel treatment options in the future. Material and Methods. We carried out a non-systematic literature review between October 1, 2022 and October 15, 2022 using the PubMed database search combinations of “age-related macular degeneration” “anti-VEGF”, “therapy”, “gene therapy” and “multimodal imaging”. Results. The study results demonstrate that lifestyle changes are still pivotal in the prevention of AMD. In the intermediate stages, dietary supplements may be considered and, in the future, systemic medications or laser treatments may show benefits. In the neovascular, exudative end-stage, mono- therapy with anti-VEGF is now supplemented with other treatment options. Finally, regarding geographic atrophy, complement inhibition as a new type of therapy is on the verge of being approved. Conclusion. An exact classification of age-related macular degeneration has brought to light many different therapy options. Even more detailed classification of AMD according to its phenotype using multimodal imaging will hopefully better pinpoint new therapeutic options in the future. Keywords AMD classification, agerelated macular degeneration (AMD), AMD prevention, AMD therapy","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124473187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aktueller Stand und zukünftige Entwicklungen der optischen Kohärenz-Tomographie","authors":"U. Oberheide","doi":"10.54352/dozv.wjuz5727","DOIUrl":"https://doi.org/10.54352/dozv.wjuz5727","url":null,"abstract":"Purpose. Optical coherence tomography has become a standard non-invasive imaging technique for the examination of the eye. In recent years, there have been advancements in previous systems, but new technological approaches could promote further expansion. Material and Methods. Based on a literature review and own research activities, current status and future developments in the field of optical coherence tomography are summarised. Special attention is given to the possibilities for cost reduction in manufacturing. Results. Current technologies in the field of computer sciences can adapt the current systems in sub-areas in such a way that a more cost-effective production seems possible and can lead to improved health care through the higher number of installed systems. Conclusion. The approaches outlined appear promising for achieving the goal of widespread use of optical coherence tomography. However, due to the typical research and de- velopment durations of medical devices, the realization will only be possible in the next few years. Keywords optical coherence tomography, time domain, frequency domain, imaging, optical technologies","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121633093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methode(n) und Anwendung des Visualtrainings in der Praxis bei Patient*innen mit zentralen Gesichtsfelddefekten","authors":"Johanna Lahne, K. Kunert","doi":"10.54352/dozv.fkwe2817","DOIUrl":"https://doi.org/10.54352/dozv.fkwe2817","url":null,"abstract":"Purpose. The aim of this clinical study is to discuss eccentric viewing training for patients with central visual field defects. Material and Methods. In order to improve the usability of optical or electronic magnifying aids and to regain reading skills, eccentric viewing training may be necessary in patients with central scotoma. Based on the visual training of Nilsson et al.1, we carried out a training with two rehabilitees at the Regiomed Rehabilitation Clinic Masserberg using simple self- made aids (optical magnification by means of overaddition and illuminated magnifying glasses; prepared exercise sheets with different texts/font sizes). We were able to find an area below the lesion that can be used for reading using letters of different sizes, which are pushed from the periphery in the direction of the visual centre. Within this area, the moving test letter can be read permanently. The subsequent atten- tional training sensitises the patient to the usefulness of this area, where text samples of different sizes are subsequently presented. These were then read aloud with appropriate close correc- tion/enlargement (observing the working distance) (moving text = moving text with steady eye = unmoving eye). Results. One rehabilitation patient already benefited so much from the use of the newly adapted magnifying aids, that addi- tional visual training showed no clear additional benefit. The other rehabilitation patient could not overcome the hurdle of the small working distance, despite intensive motivation, so that no success due to the training could be determined. Conclusion. Although the small sample cannot show direct success, it can be stated that eccentric viewing training can work without complex technology. Application to a larger population should be pursued. For more variations and fast, individual adaptation, the use of special software seems desirable.","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124013368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Früherkennung eines Aderhautmelanoms – ein Fallbericht","authors":"Michaela Rost-Krammer","doi":"10.54352/dozv.bbah7456","DOIUrl":"https://doi.org/10.54352/dozv.bbah7456","url":null,"abstract":"Purpose. This case report describes the accidental early detection of a small choroidal melanoma during a routine optometric examination. The following is a report of a rare case of choroidal melanoma, in a 58-year-old male Caucasian. He wanted to have glasses for computer work and complained of occasional flickering, when seeing in the morning after getting up. Material and Methods. The following optometric measure- ment methods were used: confrontation visual field test, ex- traocular muscle function test, cover test, retinoscopy (Heine Beta 200 Retinoscope), refraction, slit lamp examination (slit lamp Zeiss SL 120) with evaluation of the anterior eye, evalua- tion of the posterior eye (Heine Beta 200 Ophthalmoscope) and handheld fundus camera (Zeiss Visuscout 100). Results. On fundus examination of the left eye, a light pigmented retinal lesion with orange pigment and retinal eleva- tion was seen temporally on the upper vascular arch. Due to the suspected diagnosis of choroidal melanoma, immediate contact was made with a local ophthalmology practice. This confirmed the suspicion and the patient was referred to the University Eye Clinic in Munich. Conclusion. Uveal melanoma is the most common intraocular malignancy and arises from melanocytes in the iris, ciliary body or choroid. Early diagnosis and local treatment are crucial, as survival correlates with primary tumor size. Approx- imately 50 percent of patients will develop metastatic disease with survival of 6-12 months after metastatic diagnosis. The University Eye Clinic Munich confirmed the diagnosis of choroidal melanoma. A robotic Cyberknife radiosurgery was performed. Keywords Uveal Melanoma, Choroidal Melanoma, Cyberknife Radio-surgery","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130578626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amblyopie-Prävalenz in Europa","authors":"Ivonne Krawczyk","doi":"10.54352/dozv.rxgn7762","DOIUrl":"https://doi.org/10.54352/dozv.rxgn7762","url":null,"abstract":"Purpose. The aim of the present study is to estimate the prev- alence of amblyopia in Europe. Amblyopia is one of the most common causes of visual impairment, especially in children. It is defined as any unilateral or bilateral decrease in the visual acuity in the absence of structural and pathologic disorders of the eye. Amblyopia is due to insufficient development of the visual system in early childhood. If amblyopia is not detected and treated in time, the visual acuity reduction will persist for life. Material and Methods. An extensive literature review was conducted using the PubMed database using search combi- nations of “amblyopia”, “amblyopia prevalence”, “amblyopia screening” and “amblyopia therapy”. European studies on amblyopia prevalence and meta-analyses were included. The results on amblyopia prevalence are summarized. The German vision screening program is presented in detail and compared with other European programs. Results. Studies on amblyopia prevalence showed high het- erogeneity. Meta-analyses revealed pool prevalences of 2.7 to 3.7 percent. Anisometropia was the most common cause of amblyopia. For Germany, the prevalence in adults was estimated at 5.6 percent, which is a high rate compared with other European countries. Data from a German child cohort showed a prevalence of 1.5 percent. This estimate is consistent with prevalence rates in other European countries. Conclusion. Amblyopia prevalence in Germany appears to be lower in children than in adults. However, studies on amblyo- pia prevalence are difficult to compare with each other. This is partly due to the use of different amblyopia definitions. In addition, there are still no uniform European standards for amblyopia screening. Keywords amblyopia, prevalence, children, anisometropia, strabismus, screening","PeriodicalId":347784,"journal":{"name":"Optometry &amp; Contact Lenses","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126345469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}