By Topic

Retinal Oximetry Based on Nonsimultaneous Image Acquisition Using a Conventional Fundus Camera

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Sun Kwon Kim ; Biomed. Engi neering Dept., Nat. Univ., Seoul, South Korea ; Dong Myung Kim ; Min Hee Suh ; Kim, M.
more authors

To measure the retinal arteriole and venule oxygen saturation (SO2) using a conventional fundus camera, retinal oximetry based on nonsimultaneous image acquisition was developed and evaluated. Two retinal images were sequentially acquired using a conventional fundus camera with two bandpass filters (568 nm: isobestic, 600 nm: nonisobestic wavelength), one after another, instead of a built-in green filter. The images were registered to compensate for the differences caused by eye movements during the image acquisition. Retinal SO2 was measured using two wavelength oximetry. To evaluate sensitivity of the proposed method, SO2 in the arterioles and venules before and after inhalation of 100% O2 were compared, respectively, in 11 healthy subjects. After inhalation of 100% O2, SO2 increased from 96.0 ± 6.0% to 98.8% ± 7.1% in the arterioles (p = 0.002) and from 54.0 ± 8.0% to 66.7% ± 7.2% in the venules (p = 0.005) (paired t-test, n = 11). Reproducibility of the method was 2.6% and 5.2% in the arterioles and venules, respectively (average standard deviation of five measurements, n = 11).

Published in:

Medical Imaging, IEEE Transactions on  (Volume:30 ,  Issue: 8 )