1. Articles from Noriyasu Hashida

    1-7 of 7
    1. Cornea Findings of Spectral Domain Anterior Segment Optical Coherence Tomography in Uveitic Eyes of Various Etiologies

      Cornea Findings of Spectral Domain Anterior Segment Optical Coherence Tomography in Uveitic Eyes of Various Etiologies

      Purpose: To evaluate the morphologic appearance of keratic precipitates (KPs) with spectral domain anterior segment optical coherence tomography (AS-OCT) for the diagnosis of uveitic eyes of various etiologies. Methods: In all, 153 eyes of 153 patients with different types of uveitis were examined to investigate the morphologic appearance of KPs. The study included 63 eyes with herpetic iridocyclitis/endotheliitis, 58 eyes with ocular sarcoidosis, 5 eyes with Fuchs heterochromic iridocyclitis, and 27 eyes with masquerade syndrome with primary intraocular lymphoma (PIOL). AS-OCT was used to analyze the different KP types among various uveitic groups. Results: KPs were observed in 30 ...

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      Mentions: Osaka University
    2. Clinical Findings of Anterior Segment Spectral Domain Optical Coherence Tomography Images in Cytomegalovirus Corneal Endotheliitis

      Clinical Findings of Anterior Segment Spectral Domain Optical Coherence Tomography Images in Cytomegalovirus Corneal Endotheliitis

      Purpose: To evaluate the morphological characteristics of posterior corneal regions including keratic precipitates in eyes with cytomegalovirus (CMV) corneal endotheliitis using anterior segment spectral domain optical coherence tomography (SD-OCT). Methods: Thirteen eyes of 13 patients with polymerase chain reaction-proven CMV corneal endotheliitis were included in this study. Slit-lamp images and anterior segment SD-OCT images of the posterior cornea were obtained to analyze the clinical characteristics of corneal structures and keratic precipitates. Morphological changes in the posterior cornea throughout the course of an antiviral treatment were also investigated. Results: Anterior SD-OCT images showed protruding structures at the posterior cornea. These protruding ...

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    3. Optical coherence tomography manifestations of primary vitreoretinal lymphoma

      Optical coherence tomography manifestations of primary vitreoretinal lymphoma

      Background Primary vitreoretinal lymphoma (PVRL), a subset of primary central nervous system lymphoma (PCNSL), is a high-grade malignant tumor that shows various chorioretinal findings. Optical coherence tomography (OCT) is useful for detecting these lesions, and various abnormalities on OCT images have been reported. The purpose of this report was to investigate retrospectively the OCT manifestations of various disease stages and compare the manifestations of pretreatment, recurrent, and chronic cases. Methods We reviewed the medical charts and OCT images of 38 consecutive cases with PVRL. When abnormalities were detected on OCT images, the patients were classified based on the treatment of ...

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    4. Adaptive replanning intensity-modulated radiotherapy for choroidal metastasis of breast cancer using optical coherence tomography

      Adaptive replanning intensity-modulated radiotherapy for choroidal metastasis of breast cancer using optical coherence tomography

      Swept source optical coherence tomography (SS-OCT) is a convenient method for precise, early-stage detection of choroidal metastatic lesions, involving assessment of tumor response, and for regular follow-up studies. Using information obtained with SS-OCT, we performed intensity-modulated radiotherapy (IMRT) for a patient with choroidal metastasis from breast cancer with more accuracy than had been previously possible. We made replanning adaptive radiotherapy (ART) three times based on the rapid tumor shrinkage detected by weekly assessments with SS-OCT. Accordingly, the planning target volume (PTV) decreased from 1.6 cm 3 to 0.61 cm 3 (38%), with 0.95 cm 3 (59%) and ...

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      Mentions: Osaka University
    5. Diagnostic Evaluation of Ocular Toxocariasis Using High-Penetration Optical Coherence Tomography

      Diagnostic Evaluation of Ocular Toxocariasis Using High-Penetration Optical Coherence Tomography

      Purpose: To study a case with intraretinal Toxocara larvae in a granuloma using high-penetration optical coherence tomography (HP-OCT). Methods: A 50-year-old man, who was referred to our clinic with ocular toxocariasis, initially presented with granuloma formation in the retina. We followed the treatment-associated changes in the toxocariasis lesion by a series of examinations using HP-OCT before and after a systemic corticosteroid and anthelmintic therapy. Results: The posterior pole granuloma initially appeared as a yellowish-white intraretinal lesion with an exudative focus and dye leakage seen on angiography. After therapy, the lesion was no longer exudative. During treatment-free periods, an intraretinal lesion ...

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      Mentions: Osaka University
    6. Choroidal observations in posterior scleritis using high-penetration optical coherence tomography

      Choroidal observations in posterior scleritis using high-penetration optical coherence tomography

      To investigate the choroidal morphologic changes in two patients with posterior scleritis. We used high-penetration optical coherence tomography (HP-OCT) in vivo with a long-wavelength light source (1,060 nm) to view the choroidal changes. In patient 1 with unilateral scleritis, the subfoveal choroidal thickness of the right eye was 418 μm with a serous retinal detachment (SRD) at the initial visit. The treatment regimen was prednisolone 30 mg/day, and the posterior scleritis resolved. Follow-up HP-OCT showed the following choroidal thicknesses—266 μm on day 27 with no SRD, 245 μm on day 69, and 200 μm on day 216 ...

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    7. Anterior segment optical coherence tomography findings of presumed intraocular tuberculosis

      Anterior segment optical coherence tomography findings of presumed intraocular tuberculosis
      Purpose: To report a case of anterior segment findings of presumed ocular tuberculosis using anterior-segment optical coherence tomography (AS-OCT; Visante, Carl Zeiss Meditec, Inc., Dublin, CA, USA). Methods: A 78-year-old woman with persistent right ocular injection and pain of 2 weeks’ duration was referred to our clinic. Unilateral stromal keratitis affecting the corneal periphery and angle granuloma with synechiae, scleritis, and anterior uveitis were noticed. Because of the patient’s intensely positive tuberculin skin test, she was diagnosed with presumed intraocular tuberculosis. The anatomic structures of the anterior segment were monitored by AS-OCT before and after the treatment. Results: AS-OCT ...
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    1-7 of 7
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    1. (5 articles) Osaka University
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    Anterior segment optical coherence tomography findings of presumed intraocular tuberculosis Choroidal observations in posterior scleritis using high-penetration optical coherence tomography Diagnostic Evaluation of Ocular Toxocariasis Using High-Penetration Optical Coherence Tomography Adaptive replanning intensity-modulated radiotherapy for choroidal metastasis of breast cancer using optical coherence tomography Optical coherence tomography manifestations of primary vitreoretinal lymphoma Clinical Findings of Anterior Segment Spectral Domain Optical Coherence Tomography Images in Cytomegalovirus Corneal Endotheliitis Cornea Findings of Spectral Domain Anterior Segment Optical Coherence Tomography in Uveitic Eyes of Various Etiologies Measurement of the Shrinkage of Natural and Simulated Lesions on Root Surfaces using CP-OCT Optic-Net: A Novel Convolutional Neural Network for Diagnosis of Retinal Diseases from Optical Tomography Images Double layer sign: A new optical coherence tomography finding in active tubercular serpiginous-like choroiditis to monitor activity Influence of Epiretinal Membranes on the Retinal Nerve Fiber Layer Thickness Measured by Spectral Domain Optical Coherence Tomography in Glaucoma High signal-to-noise ratio reconstruction of low bit-depth optical coherence tomography using deep learning