1. Articles from Kazuyuki Hirooka

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    1. Anterior Segment Optical Coherence Tomography in Ocular Argyrosis

      Anterior Segment Optical Coherence Tomography in Ocular Argyrosis

      Purpose The current study investigated differences in the peripapillary and macular choroidal areas between patients with primary open-angle glaucoma (POAG) and healthy controls because the choroid may potentially play a role in glaucoma pathophysiology. Methods We assessed 57 healthy controls and 42 POAG patients in a cross-sectional comparative study. We used enhanced depth imaging optical coherence tomography (EDI-OCT) and then converted the luminal and interstitial areas to binary images using the Niblack method to obtain peripapillary and macular choroidal images. The relationship between the choroidal area and demographic and ocular characteristics were determined with univariate and multivariate linear regression analysis ...

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    2. Assessment of primary open-angle glaucoma peripapillary and macular choroidal area using enhanced depth imaging optical coherence tomography

      Assessment of primary open-angle glaucoma peripapillary and macular choroidal area using enhanced depth imaging optical coherence tomography

      Purpose The current study investigated differences in the peripapillary and macular choroidal areas between patients with primary open-angle glaucoma (POAG) and healthy controls because the choroid may potentially play a role in glaucoma pathophysiology. Methods We assessed 57 healthy controls and 42 POAG patients in a cross-sectional comparative study. We used enhanced depth imaging optical coherence tomography (EDI-OCT) and then converted the luminal and interstitial areas to binary images using the Niblack method to obtain peripapillary and macular choroidal images. The relationship between the choroidal area and demographic and ocular characteristics were determined with univariate and multivariate linear regression analysis ...

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    3. Correlation between the Ganglion Cell-Inner Plexiform Layer Thickness Measured with Cirrus HD-OCT and Macular Visual Field Sensitivity Measured with Microperimetry

      Correlation between the Ganglion Cell-Inner Plexiform Layer Thickness Measured with Cirrus HD-OCT and Macular Visual Field Sensitivity Measured with Microperimetry

      PURPOSE: To evaluate relationships between the macular visual field (VF) mean sensitivity and the ganglion cell and inner plexiform layer (GCA) thicknesses. METHODS: Seventy-one glaucoma patients and 29 normal subjects were included in this cross-sectional study. At each visit, GCA thicknesses were measured by Cirrus HD-OCT (Carl Zeiss Meditec, Dublin, CA) and static threshold perimetry was performed using MAIATM (Macular Integrity Assessment). The relationship between the VF sensitivity and GCA thickness was examined globally, and in the superior hemiretina, inferior hemiretina and six VF sectors with both VF and OCT in retinal view. Regression analysis was used to investigate the ...

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    4. Comparison of optic nerve head parameters using Heidelberg retinal tomography 3 and spectral-domain optical coherence tomography

      Comparison of optic nerve head parameters using Heidelberg retinal tomography 3 and spectral-domain optical coherence tomography

      Background:  To assess the agreement between the Heidelberg Retina Tomograph (HRT) and Cirrus spectral-domain OCT (Cirrus HD-OCT) when measuring optic disc parameters. Design:   Prospective, cross-sectional study. Participants:  A total of 96 glaucoma patients and 21 normal subjects were analyzed. Methods:  Optic nerve head (ONH) measurements including disc area, rim area, cup-to-disc ratio, and cup volume were obtained using both the Cirrus HD-OCT and HRT 3. Main Outcome Measurements:   Bland-Altman plots were used to evaluate the agreement between each of the optic disc parameters. Results:  While Cirrus HD-OCT values were smaller than HRT 3 values for the disc and rim areas ...

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    5. Comparison of Retinal Nerve Fiber Layer Thickness Measurements Using Time Domain and Spectral Domain Optical Coherence Tomography, and Visual Field Sensitivity

      Comparison of Retinal Nerve Fiber Layer Thickness Measurements Using Time Domain and Spectral Domain Optical Coherence Tomography, and Visual Field Sensitivity
      Purpose: To investigate the relationship between the peripapillary retinal nerve fiber layer (RNFL) thickness, as measured by Stratus time domain optical coherence tomography (OCT) (Stratus OCT) and Cirrus spectral domain OCT (Cirrus HD-OCT), and the severity indices of the visual field (VF) defects in glaucoma patients. Methods: This was a prospective, cross-sectional study. Correlations between the individual VF sensitivity at 52 test points and the Stratus OCT and Cirrus HD-OCT, which determined peripapillary RNFL thicknesses from 6 sectors, were calculated in 54 eyes with open-angle glaucoma and 22 normal control eyes. The association between the RNFL thickness and VF sensitivity ...
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    6. Stratus optical coherence tomography study of filtering blebs after primary trabeculectomy with a fornix-based conjunctival flap

      Purpose: To investigate the relationship between filtering bleb function and Stratus optical coherence tomography (OCT) images.Methods: We studied 72 eyes of 65 consecutive patients who had a fornix-based conjunctival flap in primary trabeculectomy with mitomycin C (MMC). Filtering blebs with various types of glaucoma were examined using Stratus OCT. Success rates were defined as intraocular pressure (IOP) [le] 15 mmHg and IOP reduction [ge] 25% without medication or additional surgery. Success rates among classified groups were compared using Kaplan[ndash]Meier survival curves and the log-rank test.Results: Blebs were classified into three different categories on the basis of ...
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    7. Correlation between retinal nerve fibre layer thickness and retinal sensitivity

      Purpose: To evaluate the relationship between retinal nerve fibre layer (RNFL) thickness measured by optical coherence tomography (OCT) and light threshold values obtained with the Micro Perimeter 1 (MP1). Methods: Forty-nine normal subjects and 37 glaucoma patients were included. Thickness of the RNFL around the optic disc was measured with Stratus OCT scans, and static threshold perimetry was performed with the MP1 at the same visit. Total average and mean 12-clock-hour RNFL thickness were measured with Stratus OCT. An automated 4-2-1 staircase strategy with Goldmann III stimuli was used for MP1. The correspondence between Stratus OCT and MP1 RNFL measurements ...
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    1-8 of 8
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    1. (5 articles) Carl Zeiss Meditec
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    Comparison of Retinal Nerve Fiber Layer Thickness Measurements Using Time Domain and Spectral Domain Optical Coherence Tomography, and Visual Field Sensitivity Comparison of optic nerve head parameters using Heidelberg retinal tomography 3 and spectral-domain optical coherence tomography Correlation between the Ganglion Cell-Inner Plexiform Layer Thickness Measured with Cirrus HD-OCT and Macular Visual Field Sensitivity Measured with Microperimetry Assessment of primary open-angle glaucoma peripapillary and macular choroidal area using enhanced depth imaging optical coherence tomography Anterior Segment Optical Coherence Tomography in Ocular Argyrosis Medical treatment of inflammatory punctual stenosis monitored by anterior segment optical coherence tomography Development and Validation of a Deep Learning System for Diagnosing Glaucoma Using Optical Coherence Tomography Methylene blue-filled biodegradable polymer particles as a contrast agent for optical coherence tomography Optical coherence tomography for thyroid pathology: 3D analysis of tissue microstructure Mathematical Analysis of Texture Indicators for the Segmentation of Optical Coherence Tomography Images Comparison of Current Optical Coherence Tomography Angiography Methods in Imaging Retinal Hemangioblastomas New findings useful for clinical practice using swept-source optical coherence tomography angiography in the follow-up of active ocular toxoplasmosis