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Haidinger's brushes phenomena can be seen when polarized light enters the eye. For example, one can see the phenomena when he looks at regular white background or blue sky through polarizer. Clinical application of this phenomena to macula lutea function test has been studied. In 1982, B. F. Hochheimer and H. A. Kues sucseeded in photographing retinal-polarization pattern overlayed on the macula, which was considered as Haidinger's brushes. However, techniques for photographing the patterns has not yet been clear, resulting in difficulties in clinical application of this phenomena. The purpose of this study is to determine the optimal condition for photographing the phenomena. In order to get clear images of Haidinger's brushes, polarization axes of the two polarizers placed in the projection and the imaging optics should be perpendicular. In order to compensate the decrease of the light enters the film due to this optical arangement, films with high sensitivity more than ISO 1000 should be used. Visibility of the patterns in retinal photographs of 12 normal subjects were also examined to consider the desirable condition of photographing.
ライフサポート学会の論文