• The Korean Chronic Disease News
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• no.94
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• pp.6-7
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• 1988

중년 이후에는 대부분의 사람이 생리적인 노화현상의 일환으로 시력의 사용에 불편을 느끼게 되며 때로는 중년이후에 잘 발생하는 질환에 의하여, 심한 시력장애를 일으키는 수도 있다. 전자의 경우에는 노안, 비문증 등을 들 수 있고 후자의 경우는 백내장, 당뇨병성망막증, 망막정맥폐쇄증, 황반부 변성등을 들 수 있다.

• Database Research
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• v.34 no.3
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• pp.124-136
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• 2018

There have been active research activities to use neural networks to analyze OCT images and make medical decisions. One requirement for these approaches to be promising solutions is that the trained network must be generalized to new devices without a substantial loss of performance. In this paper, we use a deep convolutional neural network to distinguish AMD from normal patients. The network was trained using a data set generated from an OCT device. We observed a significant performance degradation when it was applied to a new data set obtained from a different OCT device. To overcome this performance degradation, we propose an image normalization method which performs segmentation of OCT images to identify the retina area and aligns images so that the retina region lies horizontally in the image. We experimentally evaluated the performance of the proposed method. The experiment confirmed a significant performance improvement of our approach.