July 2019
Volume 60, Issue 9
Free
ARVO Annual Meeting Abstract  |   July 2019
Trans-pars-planar illumination enables a 200o ultra-wide field pediatric fundus camera to allow easy examination of the peripheral retina up to the ora serrata
Author Affiliations & Notes
  • Xincheng Yao
    Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, United States
    Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States
  • devrim toslak
    Department of Ophthalmology, Antalya Training and Research Hospital, Antalya, Turkey
    Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, United States
  • Felix Yan-Fay Chau
    Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States
  • Muhammet Kazim Erol
    Department of Ophthalmology, Antalya Training and Research Hospital, Antalya, Turkey
  • Robison Vernon Paul Chan
    Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois, United States
  • Taeyoon Son
    Biolight Engineering LLC, Hinsdale, Illinois, United States
    Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, United States
  • Footnotes
    Commercial Relationships   Xincheng Yao, Biolight Engineering LLC (I), Biolight Engineering LLC (P); devrim toslak, Biolight Engineering LLC (P); Felix Chau, None; Muhammet Erol, None; Robison Chan, None; Taeyoon Son, None
  • Footnotes
    Support  NIH R43 EY028786, NIH R01 EY023522, and P30 EY001792
Investigative Ophthalmology & Visual Science July 2019, Vol.60, 6105. doi:
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    • Get Citation

      Xincheng Yao, devrim toslak, Felix Yan-Fay Chau, Muhammet Kazim Erol, Robison Vernon Paul Chan, Taeyoon Son; Trans-pars-planar illumination enables a 200o ultra-wide field pediatric fundus camera to allow easy examination of the peripheral retina up to the ora serrata. Invest. Ophthalmol. Vis. Sci. 2019;60(9):6105.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : This study is to test the feasibility of using trans-pars-planar illumination for ultra-wide field pediatric fundus photography.

Methods : A pediatric fundus camera (PedCam200) was designed to provide a 200° FOV in a single snapshot image. All off-the-shelf optical components were selected to construct a lab prototype for proof-of-concept demonstration. Instead of trans-pupillary illumination in traditional fundus cameras, trans-pars-planar illumination is employed in the prototype PedCam200. Patients with retinopathy of prematurity (ROP) and retinoblastoma have been tested for functional validation of the prototype PedCam200.

Results : The prototype PedCam200 provides a 200° FOV to enable easy visualization of both the central and peripheral retina, up to the ora serrata, without the need of scleral depression. Using this camera, the boundary (white arrowheads, Fig. 1A) between the edge of the developing retinal vessels and peripheral avascular retinal areas in an ROP patient was clearly observed. A retinoblastoma lesion (red arrowhead, Fig. 1B) surrounded by laser photocoagulation spots and retina beyond vortex vessels (green arrowheads, Fig. 1B) to the ora serrata (white arrowhead, Fig. 1B) in a retinoblastoma patient were also clearly observed with the prototype PedCam200.

Conclusions : By employing trans-pars-planar illumination, an ultra-wide field pediatric fundus camera PedCam200 was able to provide a 200° FOV in a snapshot retinal image. The low cost, portable PedCam200 has the potential to foster clinical deployment of ultra-wide field fundus photography for affordable screening, diagnosis and treatment of pediatric eye diseases.

This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.

 

Figure 1. Representative fundus images of a patient with ROP (A) and another patient with previously diagnosed retinoblastoma (B), captured with the lab prototype PedCam200. A 130o fundus image captured with a clinical RetCam device is superimposed on the 200o fundus image B for FOV comparison (C).

Figure 1. Representative fundus images of a patient with ROP (A) and another patient with previously diagnosed retinoblastoma (B), captured with the lab prototype PedCam200. A 130o fundus image captured with a clinical RetCam device is superimposed on the 200o fundus image B for FOV comparison (C).

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