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M. Miura, A.E. Elsner, A. Weber, M.C. Cheney, K. Yamada, T. Agawa, M. Osako, T. Iwasaki, M. Usui; Imaging polarimetry in idiopathic macular hole . Invest. Ophthalmol. Vis. Sci. 2004;45(13):2797.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To detect the morphologic features of idiopathic macular holes, using a novel polarimetry method. Methods: We prospectively examined 11 eyes of 11 patients with idiopathic macular holes (stage 1B– 1, stage 2– 2, stage 3– 5, and stage 4– 3 eyes). Scanning laser polarimetry (GDx, Laser diagnostic Technologies) provided raw data of 20 image pairs at 780 nm that varied in illumination polarization angle, and simultaneously sampled at crossed and uncrossed polarizations. A depolarized light image was computed from the portion of the light that was unmodulated for each pixel, for the crossed detector. Parallel polarized images and confocal images were also computed. The presence of radiating retinal striae around macular hole is an important morphological finding, and reflects the presence of traction around macular hole. To compare the visibility of the radiating retinal striae across imaging modalities, two retina specialists rank–ordered the visibility of depolarized images, parallel polarized images, confocal images, and digital color fundus photographs which were taken using Topcon TRC50IX retinal camera with a Victor KY–F75 digital camera. Results: The depolarized image clearly visualized the radiating retinal striae in all cases. Depolarized images were rated superior to parallel polarized images, confocal images, and color fundus photographs (P < 0.001, Wilcoxon signed rank test). In color fundus photographs, the radiating retinal striae were not identifiable in any cases. Conclusions: Novel polarimetry methods could readily localize the fine retinal features around macular holes. This may assist with the rapid, noninvasive assessment of traction changes in macular hole.
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