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1. (WO2017151921) METHODS AND DEVICES FOR FUNDUS PHOTOGRAPHY EMPLOYING TRANS-PALPEBRAL AND TRANS-SCLERAL ILLUMINATION

Pub. No.:    WO/2017/151921    International Application No.:    PCT/US2017/020449
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Fri Mar 03 00:59:59 CET 2017
IPC: A61B 3/14
A61B 3/00
A61B 3/10
A61B 3/12
A61F 9/00
Applicants: BIOLIGHT ENGINEERING LLC
Inventors: TOSLAK, Devrim
YAO, Xincheng
Title: METHODS AND DEVICES FOR FUNDUS PHOTOGRAPHY EMPLOYING TRANS-PALPEBRAL AND TRANS-SCLERAL ILLUMINATION
Abstract:
Methods and apparatus are described for illuminating an interior of an eye for fundus photography. The disclosed invention delivers light through a pars planar area of the eye for illuminating the interior of the eye (trans-scleral illumination), or through an eyelid of the eye (trans-palpebral illumination). Trans-scleral illumination or trans-palpebral illumination frees the entire pupil for imaging and therefore eliminates need for pupil dilation or complex balancing between illumination and imaging in previous wide angle fundus photography based on trans-pupillary illumination. Additionally, the present invention discloses, when an optical fiber bundle placed adjacent to the pars plana, at least one optical fiber in the optical fiber bundle aligns with the pars plana to deliver light through the pars plana into the interior of the eye, thus eliminating the previous problem of having to move an optical fiber to search a location of the pars plana.