Design of 45∘ periscopic visual field expansion device for peripheral field loss
نویسندگان
چکیده
منابع مشابه
Community-based trial of a peripheral prism visual field expansion device for hemianopia.
OBJECTIVE To determine the functional utility for general mobility of peripheral prism glasses, a novel visual field expansion device for hemianopia, in a large-scale, community-based, multicenter study with long-term follow-up. METHODS Forty-three participants with homonymous hemianopia were fitted with temporary press-on Fresnel peripheral prism segments of 40 prism diopters. Follow-up ques...
متن کاملCLINICAL SCIENCES Community-Based Trial of a Peripheral Prism Visual Field Expansion Device for Hemianopia
Methods: Forty-three participants with homonymous hemianopia were fitted with temporary press-on Fresnel peripheral prism segments of 40 prism diopters. Follow-up questionnaires evaluating functional benefits for mobility were administered in the office at week 6. Participants who continued wearing the prisms were interviewed again by telephone after a median of 12 months. Primary outcome measu...
متن کاملThe risk of pedestrian collisions with peripheral visual field loss
Patients with peripheral field loss complain of colliding with other pedestrians in open-space environments such as shopping malls. Field expansion devices (e.g., prisms) can create artificial peripheral islands of vision. We investigated the visual angle at which these islands can be most effective for avoiding pedestrian collisions, by modeling the collision risk density as a function of bear...
متن کاملMacular hole surgery-associated peripheral visual field loss.
To examine in more detail the peripheral visual field loss after macular hole surgery, we reviewed a series of 38 consecutive patients (44 eyes) with idiopathic macular hole who underwent vitrectomy and fluid-gas exchange. Ten (22.7%) eyes of 9 patients developed peripheral visual field loss shortly after successful surgery. This complication was characterized by mild to moderate wedge-shaped v...
متن کاملfMRI of peripheral visual field representation.
OBJECTIVE Despite mapping tools for central visual field, delineation of peripheral visual field representations in the human cortex has remained a challenge. Access to large visual field and differentiation of retinotopic areas with robust mapping procedures and automated analysis are beneficial in basic research and could accelerate development of clinical applications. METHODS We construct...
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ژورنال
عنوان ژورنال: Optics Communications
سال: 2020
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2019.124364