Comparison of the depth of an optic nerve head obtained using stereo retinal images and HRT

Toshiaki Nakagawa; Yoshinori Hayashi; Yuji Hatanaka; Akira Aoyama M.D.; Takeshi Hara; Masakatsu Kakogawa; Hiroshi Fujita; Tetsuya Yamamoto M.D.

doi:10.1117/12.706237

29 March 2007 Comparison of the depth of an optic nerve head obtained using stereo retinal images and HRT

Toshiaki Nakagawa, Yoshinori Hayashi, Yuji Hatanaka, Akira Aoyama M.D., Takeshi Hara, Masakatsu Kakogawa, Hiroshi Fujita, Tetsuya Yamamoto M.D.

Author Affiliations +

Proceedings Volume 6511, Medical Imaging 2007: Physiology, Function, and Structure from Medical Images; 65112M (2007) https://doi.org/10.1117/12.706237
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

The analysis of the optic nerve head (ONH) in the retinal fundus is important for the early detection of glaucoma. In this study, we investigate an automatic reconstruction method for producing the 3-D structure of the ONH from a stereo retinal image pair; the depth value of the ONH measured by using this method was compared with the measurement results determined from the Heidelberg Retina Tomograph (HRT). We propose a technique to obtain the depth value from the stereo image pair, which mainly consists of four steps: (1) cutout of the ONH region from the retinal images, (2) registration of the stereo pair, (3) disparity detection, and (4) depth calculation. In order to evaluate the accuracy of this technique, the shape of the depression of an eyeball phantom that had a circular dent as generated from the stereo image pair and used to model the ONH was compared with a physically measured quantity. The measurement results obtained when the eyeball phantom was used were approximately consistent. The depth of the ONH obtained using the stereo retinal images was in accordance with the results obtained using the HRT. These results indicate that the stereo retinal images could be useful for assessing the depth of the ONH for the diagnosis of glaucoma.

Citation Download Citation

Toshiaki Nakagawa, Yoshinori Hayashi, Yuji Hatanaka, Akira Aoyama M.D., Takeshi Hara, Masakatsu Kakogawa, Hiroshi Fujita, and Tetsuya Yamamoto M.D. "Comparison of the depth of an optic nerve head obtained using stereo retinal images and HRT", Proc. SPIE 6511, Medical Imaging 2007: Physiology, Function, and Structure from Medical Images, 65112M (29 March 2007); https://doi.org/10.1117/12.706237

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