Multi-periscopic prism device for field expansion

Citation:

Peli, E., Vargas-Martin, F., Kurukuti, N. M., & Jung, J. - H. (2020). Multi-periscopic prism device for field expansion. Biomed. Opt. Express , 11 (9), 4872–4889 . OSA. Copy at https://tinyurl.com/ydbd9f9w
[PDF]5.17 MB

Date Published:

Sep

Abstract:

Patients with visual field loss frequently collide with other pedestrians, with the highest risk being from pedestrians at a bearing angle of 45&\#x00B0;. Current prismatic field expansion devices (&\#x2248;30&\#x00B0;) cannot cover pedestrians posing the highest risk and are limited by poor image quality and restricted eye scanning range (<5&\#x00B0;). A new field expansion device: multi-periscopic prism (MPP); comprising a cascade of half-penta prisms provides wider shifting power (45&\#x00B0;) with dramatically better image quality and wider eye scanning range (15&\#x00B0;) is presented. Spectacles-mounted MPPs were implemented using 3D printing. The efficacy of the MPP is demonstrated using perimetry, photographic depiction, and analyses of the collision risk covered by the devices.

Publisher's Version

Last updated on 01/24/2022