研究者業績

田中 秀典

tanaka hidenori

基本情報

所属
藤田医科大学 医学部 医学科 眼科学 助教
学位
博士(医学)

J-GLOBAL ID
201501011327591159
researchmap会員ID
7000013281

論文

 14
  • Atsuhiro Tanikawa, Keita Suzuki, Ryoko Nomura, Hidenori Tanaka, Tadashi Mizuguchi, Yoshiaki Shimada, Masayuki Horiguchi
    Documenta Ophthalmologica 142(2) 177-183 2021年4月  
  • Daisuke Samoto, Atsuhiro Tanikawa, Keita Suzuki, Hidenori Tanaka, Tadashi Mizuguchi, Yoshiaki Shimada, Masayuki Horiguchi
    Fujita medical journal 7(4) 117-121 2021年  
    OBJECTIVES: The aim of this study was to determine whether age correlates with amplitude and latency, when full-field electroretinography (ERG) is performed using skin electrodes. The ability of pulse reference power line noise reduction (PURE) to dampen the noise associated with the use of skin electrodes, was also investigated. METHODS: ERG was performed on 77 eyes in 77 healthy subjects (mean age: 55.6±19.0 years; age range: 9 to 86 years). Subjects with -5D or higher myopia, Emery-Little grade III or higher cataracts, retinal disease, uveitis, glaucoma, ≤5 mm mydriasis, or a history of intraocular surgery other than cataract surgery, were excluded. The active, reference, and ground electrodes were placed on the lower eyelid, outer canthus, and earlobe, respectively. Responses were averaged 10 times for dark-adapted (DA) ERGs, and 32 to 64 times for light-adapted (LA) ERGs. Noise was removed using the PURE method. RESULTS: The DA ERGs without PURE were so noisy that the amplitude or latency could not be determined, whereas those with PURE were comparatively quieter. ERG with PURE demonstrated a significant negative correlation between age and amplitude and a significant positive correlation between age and latency. CONCLUSIONS: We could record the measurable ERG waveforms with skin electrodes by using the PURE method, especially in fewer averaged conditions. It is suggested that skin electrode with PURE is suitable to examine the pathological ERGs, and other types of electrodes. It is recommended that the aging effect should be taken into consideration when pathological ERGs are evaluated.
  • Koji Hirano, Hidenori Tanaka, Kumiko Kato, Kaoru Araki-Sasaki
    Clinical ophthalmology (Auckland, N.Z.) 15 609-616 2021年  
    Purpose: In clinical practice we sometimes encounter patients with severe corneal ulcers who have been treated with topical corticosteroids. This study reviewed the clinical features and visual outcomes of these patients and investigated the background of the prescription of topical corticosteroids. Patients and Methods: The medical records of patients who visited the Cornea Service at Fujita Health University Bantane Hospital and were treated for infectious keratitis from April 2016 to March 2020 were retrospectively reviewed. Patients treated with topical corticosteroids before a culture-proven diagnosis were studied in terms of demographics, best-corrected visual acuity at arrival and at last visit, the clinical course after visit, ocular history, and combination therapy by the previous ophthalmologist. Results: Out of the 200 eyes of 197 patients with infectious keratitis, 14 eyes of 14 patients were treated with topical corticosteroids before a culture-proven diagnosis. All 14 patients were referred, as they had severe keratitis that could not be cured with topical antibiotics and corticosteroids. Based on the culture results, we diagnosed Acanthamoeba keratitis (AK) in six patients, fungal keratitis (FK) in two patients, bacterial keratitis (including a suspected case) in two patients, and unknown cause in four patients. Two patients with AK, FK, and unknown keratitis had unfortunate clinical courses and poor visual outcomes. From the information in the referral letters, at least six of the 14 patients were treated with either acyclovir ocular ointment or valaciclovir tablets, along with topical corticosteroids. Conclusion: Application of topical corticosteroids for keratitis that does not respond to empirical antibiotic therapy is harmful since AK or FK is likely involved in these topical antibiotic-resistant cases. Microbiological evidence, as well as a differential diagnosis of herpetic stromal keratitis, is needed when prescribing topical corticosteroid for the treatment of suspected infectious keratitis.
  • Hidenori Tanaka, Atsuhiro Tanikawa, Yoshiaki Shimada, Yuzo Miyake, Tadashi Mizuguchi, Masayuki Horiguchi
    Japanese Journal of Ophthalmology 64(2) 210-215 2020年3月  
  • 平野耕治, 田中秀典, 岩味未央.
    眼科 61(7) 763-769 2019年7月  査読有り

MISC

 5

書籍等出版物

 1

講演・口頭発表等

 48