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31 results on '"Okuyama, Sachiko"'

14. Effects of head tilt on visual field testing with a head-mounted perimeter imo

Author

Yamao, Sayaka, primary, Matsumoto, Chota, additional, Nomoto, Hiroki, additional, Numata, Takuya, additional, Eura, Mariko, additional, Yamashita, Marika, additional, Hashimoto, Shigeki, additional, Okuyama, Sachiko, additional, Kimura, Shinji, additional, Yamanaka, Kenzo, additional, Chiba, Yasutaka, additional, Aihara, Makoto, additional, and Shimomura, Yoshikazu, additional

Published
2017
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17. Visual Field Testing with Head-Mounted Perimeter ‘imo’

Author

Matsumoto, Chota, primary, Yamao, Sayaka, additional, Nomoto, Hiroki, additional, Takada, Sonoko, additional, Okuyama, Sachiko, additional, Kimura, Shinji, additional, Yamanaka, Kenzo, additional, Aihara, Makoto, additional, and Shimomura, Yoshikazu, additional

Published
2016
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19. The interpretation of results of 10-2 visual fields should consider individual variability in the position of the optic disc and temporal raphe

Author

Tanabe, Fumi, Matsumoto, Chota, McKendrick, Allison M, Okuyama, Sachiko, Hashimoto, Shigeki, and Shimomura, Yoshikazu

Abstract

AimsTo clarify the anatomical relation between the optic disc and temporal raphe and to examine how these are related to test points in the 10-2 visual field test pattern.Subjects and methodsFor 22 eyes of volunteers with normal vision (+0.75 D spherical equivalent 7.88 D), a volume scan was used to obtain en-face images from a plane fitted to the inner limiting membrane using optical coherence tomography (OCT). The clearest en-face retinal nerve fibre (RNF) image was chosen for each subject and superimposed on fundus photographs using blood vessels for alignment. Individual landmarks (disc, fovea and visual field blind spot) were then used to superimpose the Humphrey Field Analyzer 10-2 visual field on the OCT image to compare with the RNF image.ResultsThe average disc–fovea–raphe angle was 169.4°±3.2°. Both the disc and temporal raphe were located above the horizontal midline (ie, were inferior in visual field space). For the 10-2 test pattern superimposed on the OCT image, in 54.5% of eyes, the temporal inferior test points adjacent to the horizontal midline mapped to the anatomical inferior hemifield. In 22.7% of eyes, nasal inferior test points adjacent to the horizontal midline mapped to the anatomical inferior hemifield. This mapping is opposite to typically assumed.ConclusionThe position of the disc and raphe affects the mapping between structure and function with respect to superior and inferior hemifields. Individual differences in the position of the temporal raphe should be considered when mapping between structure and function for the 10-2 test pattern.

Published
2018
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20. Intravitreal bevacizumab injection and carotid artery stent replacement for neovascular glaucoma in internal carotid artery occlusion

Author

Kodama,Aya, Sugioka,Koji, Kuniyoshi,Kazuki, Okuyama,Sachiko, Matsumoto,Chota, Shimomura,Yoshikazu, Kodama,Aya, Sugioka,Koji, Kuniyoshi,Kazuki, Okuyama,Sachiko, Matsumoto,Chota, and Shimomura,Yoshikazu

Abstract

Aya Kodama, Koji Sugioka, Kazuki Kuniyoshi, Sachiko Okuyama, Chota Matsumoto, Yoshikazu ShimomuraDepartment of Ophthalmology, Kinki University Faculty of Medicine, Osaka-Sayama City, Osaka, JapanAbstract: Neovascular glaucoma (NVG) secondary to internal carotid artery (ICA) occlusion is usually resistant to treatment. We report a case of NVG with ICA occlusion improved by intravitreal bevacizumab (IVB) injection and carotid artery stent replacement (CAS), even though we did not perform panretinal photocoagulation. A 67-year-old male with NVG noted visual loss in his left eye. Magnetic resonance angiography showed left ICA occlusion. He was diagnosed with NVG secondary to ICA occlusion. The next day, we carried out IVB injection in his left eye, following which the iris and angle neovascularization regressed, and the intraocular pressure decreased to normal within a day after the injection. CAS was performed on his left ICA at a month post injection. Two months later, we reinjected bevacizumab in his left eye. His condition remained stable with no recurrence over two years. This case indicates that IVB injection and CAS are useful for early-stage NVG secondary to ICA occlusion.Keywords: bevacizumab, neovascular glaucoma, internal carotid artery occlusion, carotid artery stent replacement, vascular endothelial growth factor

Published
2010

31. [Problems of visual field disturbance criteria in visual impairment grade 5].

Author

Matsumoto C, Kayazawa T, Okuyama S, Hashimoto S, and Shimomura Y

Subjects
Adolescent, Adult, Aged, Female, Humans, Male, Middle Aged, Visual Acuity, Visual Fields, Young Adult, Vision Disorders diagnosis
Abstract

Purpose: In 1995, the Act on Welfare of Physically Disabled Persons was revised and the visual impairment grading methods were modified. In this revision, the target size for peripheral visual field measurements was changed from V/4 to I/4. We compared the area of I/4 and V4 visual fields in normal eyes and evaluated its influence on the decision of the visual impairment grade 5., Subjects and Methods: Goldmann kinetic perimetry results obtained from 137 eyes of 137 subjects (age 10-79, average ± SD: 47.0 ± 17.5) at Kinki University Hospital were retrospectively evaluated. The V/4 and I/4 isopter areas were calculated using Image J and compared with the normal visual field range in the visual impairment criteria., Results: The V/4 isopter area decreased from age 70 and the I/4 isopter area decreased significantly from age 50. The aging slope of the isopter areas were significantly larger in I/4 than in V/4. In age 60 to 69, 19% showed a smaller I/4 isopter area than that of the grade 5 criteria. In age 70 to 79, 75% showed a smaller I/4 isopter area than that of the grade 5 criteria., Conclusion: In some elderly people, the binocular I/4 isopter area is smaller than the visual impairment grade 5 criteria.

Published
2014

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