The Experts below are selected from a list of 4497 Experts worldwide ranked by ideXlab platform
Samuel N Markowitz - One of the best experts on this subject based on the ideXlab platform.
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Low Vision Device coverage across Canada
Clinical Ophthalmology, 2021Co-Authors: Andrew Swift, Yejun Hong, Amit Sahni, Micah Luong, Samuel N MarkowitzAbstract:Purpose: Low Vision Devices can play a significant role in improving the quality of life of the visually impaired. Because each Canadian province and territory is responsible for how health care is delivered, government coverage for Devices varies between jurisdictions. This article provides a concise summary of the different provincial and territorial Low Vision Device subsidies available to visually impaired adults in Canada. Methods: Information gathered for this article was obtained from organizations such as Vision Loss Rehabilitation Canada, health care professionals (including ophthalmologists and optometrists) across Canada and from government agencies providing Low Vision services. Details regarding government assistance for Low Vision Devices include the program name, administering organization, eligibility, types of Devices that are subsidized and how the assistance is administered in each province and territory. Links to government websites for Device coverages are provided in the article where applicable. Results: Within the 10 provinces and 3 territories of Canada, there is some form of financial assistance for Low Vision Devices available to the adult population in 54% (7/13) of the jurisdictions. At present, subsidization is quite variable between jurisdictions, ranging from full coverage to no provincial/ territorial coverage whatsoever. Furthermore, while there is some coverage in Manitoba and New Brunswick, it is limited to post-secondary education and work-related needs. Conclusion: Adults with Low Vision in Canada cannot always rely on public support to obtain Low Vision Devices. Further legislation and development of coverages is needed to provide more unified and equitable access to Devices for all Canadians.
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the effect of a head mounted Low Vision Device on visual function
Optometry and Vision Science, 2018Co-Authors: Walter Wittich, Samuel N Markowitz, Marieceline Lorenzini, Michael J Tolentino, Scott A Gartner, Judith E Goldstein, Gislin DagnelieAbstract:SIGNIFICANCEHead-mounted Low Vision Devices have received considerable attention in recent years owing to rapidly developing technology, facilitating ease of use and functionality. Systematic clinical evaluations of such Devices remain rare but are needed to steer future Device development.PURPOSETh
R T Jose - One of the best experts on this subject based on the ideXlab platform.
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binocular contrast sensitivity testing for Low Vision patients
Journal of the American Optometric Association, 1991Co-Authors: K B Eldred, R T JoseAbstract:: Contrast sensitivity testing is often included in primary care and Low Vision examinations. This test is designed to provide information regarding the quality of a patient's Vision. This clinical study provides a method to assess the binocularity of a Low Vision patient with contrast sensitivity testing. The method alLows the practitioner to determine if monocular or binocular conditions are optimal for the use of a near Low-Vision Device.
K B Eldred - One of the best experts on this subject based on the ideXlab platform.
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binocular contrast sensitivity testing for Low Vision patients
Journal of the American Optometric Association, 1991Co-Authors: K B Eldred, R T JoseAbstract:: Contrast sensitivity testing is often included in primary care and Low Vision examinations. This test is designed to provide information regarding the quality of a patient's Vision. This clinical study provides a method to assess the binocularity of a Low Vision patient with contrast sensitivity testing. The method alLows the practitioner to determine if monocular or binocular conditions are optimal for the use of a near Low-Vision Device.
Dane Nilsson - One of the best experts on this subject based on the ideXlab platform.
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Low Vision Device
British Journal of Ophthalmology, 2007Co-Authors: Ivan R Schwab, Dane NilssonAbstract:Diffraction depends on the size, and limits the performance of an eye. As creatures become smaller, visual mechanisms become more challenging if sight is to be one of the primary sensory modalities, especially if the intended prey is yet smaller. Hence, a small creature risks sensory disability simply by being small, particularly if it is a predator. Resourceful solutions, however, have been found and perfected. Mysid shrimp are a family of small decapods, each species generally being no longer than 5–15 mm. There cannot be much of an eye in such a creature. All shrimp have compound eyes, and the larger, long-bodied decapods have reflecting superposition eyes ( Br J Opthalmol , November 2006). However, Dioptromysis paucispinosa , one of the smallest of the mysid shrimp at 5 mm in length, has refracting superposition eyes similar to those of moths ( Br J Opthalmol , September 2003). This particular species of mysid shrimp has another eye within the primary eye, as its generic name would suggest, providing two different ocular forms in the same eye. Moreover, this second eye is …
Jiwon Kwon - One of the best experts on this subject based on the ideXlab platform.
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a case of Low Vision Device application in a patient with visual acuity counting fingers
Journal of The Korean Ophthalmological Society, 2007Co-Authors: Joonseo Hwang, Youngkeun Han, Jiwon KwonAbstract:Purpose: To report the successful application of a Keplerian telescope in a Low Vision patient whose visual acuity was counting fingers, which is typically a difficult range for LVA adaptation. Methods: We used telescopes, distance Low Vision Devices, in a 36-year-old man whose visual acuity, because of congenital corneal opacity, was limited to hand movement in his left eye and to counting fingers in his right eye. The objective was to improve his ability to participate in outdoor activities. Results: Even though the patient's visual acuity was seemingly beyond improvement, his visual acuity was improved to the level of 20/100 with a distance Low Vision Device, a Keplerian telescope 8×30. Conclusions: In the case of patients whose visual acuity is worse than counting fingers, it is usually difficult to improve poor Vision by using telescopes for distance. However, in spite of restricted adaptation, Low Vision telescopes can be used to produce good results in Low Vision patients.
