Retina-simulating phantom produced by photolithography

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Title: Retina-simulating phantom produced by photolithography
Authors: Valente, DeniseVohnsen, Brian
Permanent link: http://hdl.handle.net/10197/13052
Date: 15-Nov-2017
Online since: 2022-08-15T15:12:51Z
Abstract: Cone photoreceptors have a narrow acceptance angle that is well matched to the size of the eye pupil and dampens the visual impact of aberrations and scattering. However, the structure of the human retina is not replicated in existing eye models used to test refractive designs or retinal implants that restore partial vision to the blind. Here, we report on an artificial waveguide-based retinal phantom manufactured by photolithography in photoresist film with dimensions and refractive index contrast similar to the retinal receptor layer. The optical performance of the waveguide array is analyzed in terms of angular coupling efficiency, and it is experimentally verified that the structure leads to improved resolution and contrast of optical images transmitted through the layer when defocus is present.
Funding Details: Irish Research Council
Funding Details: Capes Foundation
Type of material: Journal Article
Publisher: Optica
Journal: Optics Letters
Volume: 42
Issue: 22
Start page: 4623
End page: 4626
Copyright (published version): 2017 Optical Society of America
Keywords: Photonic crystal fiberDirectional sensitivityModelVision
DOI: 10.1364/OL.42.004623
Language: en
Status of Item: Peer reviewed
ISSN: 0146-9592
This item is made available under a Creative Commons License: https://creativecommons.org/licenses/by-nc-nd/3.0/ie/
Appears in Collections:Physics Research Collection

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