1. 1-9 of 9
    1. A New Optical Coherence Tomography Method for Subfoveal Choroidal Thickness Measurement: A Singlecenter Observational Study

      A New Optical Coherence Tomography Method for Subfoveal Choroidal Thickness Measurement: A Singlecenter Observational Study

      Background : Several macular pathologies are associated with choroidal vascular supply, and thus require choroidal thickness evaluation. However, there is no standard subfoveal choroidal thickness (SFCT) measuring method. This study investigated a new method to measure the SFCT, using optical coherence tomography. Methods : This is a single-center observational study. Eighty-two senior medical students participated as observers and independently measured the SFCT on five standard optical coherence tomography images of healthy adults in a tertiary care setting. They used three different methods: (1) the observer’s own method, (2) the conventional method, perpendicular to the retinal pigment epithelium, and (3) the new ...

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    2. Optical Coherence Tomography Observed Fundus Changes of Hypertensive Disorders Complicating Pregnancy

      Optical Coherence Tomography Observed Fundus Changes of Hypertensive Disorders Complicating Pregnancy

      Background By optical coherence tomography(OCT) observed fundus changes of hypertensive disorders complicating pregnancy. Methods Inspected patients with hypertensive disorders complicating pregnancy accepted eye examination including corrected visual acuity, slit lamp examination, fundus examination, OCT Results 1.OCT examination results of abnormal 148, which neurosensory serous retinal detachment 84eyes (56.76%), pigment epithelium and the IS / OS layer change 38 eyes (25.68%), optic disc oedema and retinal haemorrhage and other changes of 26 eyes (17.56%). 2. Between different phenotypes OCT of Patients with oedema, proteinuria, blood pressure and course had differences (P <0.05), and had a correlation ...

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    3. Quantitative Evaluation of Vascular Density inDiabetic Retinopathy Subtypes using Optical Coherence Tomography Angiography

      Quantitative Evaluation of Vascular Density inDiabetic Retinopathy Subtypes using Optical Coherence Tomography Angiography

      Background: To determine the discrepancy between quantitative measurement of retinal and choriocapillaris (CC) vascular density (VD) in diabetic retinopathy (DR) stages using spectral domain optical coherence tomography angiography (SD OCTA) and compare it with normal subjects. Methods: 188 eyes of 97 participants were recruited in this cross-sectional study. Macular OCTA (3x3mm) scan was performed and VD at the level of superficial capillary plexus (SCP), deep capillary plexus (DCP) and CC were measured with the device software. Results: In normal subjects, VD in SCP, DCP, and CC were higher in all subsegments. In retinal VD, all calculated parameters were reduced in ...

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    4. An Assessment of Band Keratopathy Depth With Anterior Segment Optical Coherence Tomography

      An Assessment of Band Keratopathy Depth With Anterior Segment Optical Coherence Tomography

      Background: To describe the anterior segment optical coherence tomography (AS-OCT) findings in a series of patients with band keratopathy (BK) and discuss its possible clinical utility. Methods: A retrospective review of 31 eyes from 31 consecutive patients with BK from November 2013 to October 2018. Lesion depth and central corneal thickness (CCT) were outputted from AS-OCT (RS-3000 Advance, NAVIS-EX 1.5.5 Nidek CO LTD, Japan). Results: There were 20 cases of ocular trauma, 3 cases of retinal detachment, 2 cases of glaucoma, 2 cases of uveitis, 1 case of Coats’ disease, 1 case of complicated cataract surgery, 1 case ...

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    5. Early Diagnostic Value of Spectral Domain-optical Coherence Tomography for Optic Nerve Injury in Sellar-occupied Patients

      Early Diagnostic Value of Spectral Domain-optical Coherence Tomography for Optic Nerve Injury in Sellar-occupied Patients

      Background: To investigate the value of spectral domain-optical coherence tomography (SD-OCT) in the early diagnosis of optic nerve injury in patients with occupying lesion in sellar region. Methods: A case-control study was conducted for patients who were diagnosed as the occupying lesion in sellar region in the Department of Ophthalmology. The general routine examination and visual field examination were performed in the ophthalmology department. A total of 22 patients(44 eyes) with no abnormalities were selected, and 22 healthy controls (44 eyes) were enrolled. SD-OCT was used to detect the average thickness of peripapillary retinal nerve fiber layer (pRNFL) and ...

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    6. Quantitative Evaluation of Parafoveal Microvasculature Changes in Eyes with Exudative Circumscribed Choroidal Haemangioma : An Optical Coherence Tomography Angiography Study

      Quantitative Evaluation of Parafoveal Microvasculature Changes in Eyes with Exudative Circumscribed Choroidal Haemangioma : An Optical Coherence Tomography Angiography Study

      Background : To quantitative evaluation of parafoveal microvasculature changes in eyes with exudative circumscribed choroidal haemangioma (CCH) compared with age- and gender-controlled healthy eyes. Methods : This was a cross-sectional, case-control study. 82 eyes of eighty-two subjects including 41 eyes of forty-one subjects in the exudative CCH group and 41 eyes of forty-one subjects in the age- and gender-controlled healthy eye group were enrolled in this study. Optical coherence tomography angiography (OCTA) was performed in each subject, and the capillary density (CD) of superficial plexus, deep capillary plexus, and the choriocapillaris as well as the area of foveal avascular zone (FAZ) were ...

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    7. Quantitative Assessment of Retinal Thickness and Vessel Density Using Optical Coherence Tomography Angiography in Patients with Alzheimer’s Disease and Glaucoma

      Quantitative Assessment of Retinal Thickness and Vessel Density Using Optical Coherence Tomography Angiography in Patients with Alzheimer’s Disease and Glaucoma

      Background Retinal imaging using optical coherence tomography (OCT) and OCT angiography (OCTA) may serve as an alternative approach to monitoring and diagnosing neurodegenerative diseases such as Alzheimer's disease (AD) and primary open-angle glaucoma (POAG). In this study, we performed direct comparisons of retinal vessel density with the thickness of inner retinal layer (IRL) and outer retinal layer (ORL) in patients with AD and POAG. Methods In this cross-sectional study, we analyzed data from 48 eyes of healthy control (HC) participants, 71 eyes of POAG patients, and 49 eyes of AD patients with confirmed presence of fibrillar brain amyloid on ...

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    8. The optical coherence tomography angiography manifestation of strabismus amblyopia with eccentric fixation

      The optical coherence tomography angiography manifestation of strabismus amblyopia with eccentric fixation

      Background To explore the application value of optical coherence tomography angiography (OCTA) in patients with strabismus amblyopia accompanied by eccentric fixation. Methods The following data were collected from patients with strabismus amblyopia accompanied by eccentric fixation: best corrected visual acuity (BCVA); spherical equivalent (SE) and deviation angle; eccentric fixation distance using OCTA system software tools, with µm as the unit of measurement of the distance between the retinal fixed point and the macular fovea; macular fovea vessel length density (VLD); perfusion density (PD); foveal avascular zone (FAZ) area; and perimeter and circularity of the superficial retinal vascular plexus. The entry ...

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    9. Consistency Between Optical Coherence Tomography and Humphrey Visual Field for Evaluating Glaucomatous Defects in High Myopic Eyes

      Consistency Between Optical Coherence Tomography and Humphrey Visual Field for Evaluating Glaucomatous Defects in High Myopic Eyes

      Background: The study is to investigate the influence of high myopia on the consistency between optical coherence tomography (OCT) and visual field in primary open-angle glaucoma (POAG). Methods: We enrolled 37 patients with POAG with high myopia (POAG-HM group), 27 patients with POAG without high myopia (POAG group), and 29 controls with high myopia (HM group). All subjects underwent Humphrey perimetry (30-2 and 10-2 algorithms). The peripapillary retinal nerve fiber layer (RNFL) and macular ganglion cell-inner plexiform layer (GCIPL) thicknesses were measured using Cirrus HD-OCT. Spearman’s rank correlation analysis was used to determine correlations between OCT and perimetric parameters ...

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    1-9 of 9
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