1. Articles from haitao li

    1-10 of 10
    1. Association of Birth Parameters with OCT Measured Macular and Retinal Nerve Fiber Layer Thickness

      Association of Birth Parameters with OCT Measured Macular and Retinal Nerve Fiber Layer Thickness
      Aims: To examine whether birth parameters have associations with macular and retinal nerve fiber layer (RNFL) thickness measurements. Methods: The Sydney Myopia Study examined secondary school children for ocular conditions, with all eligible Year 7 students from 21 high schools invited to participate. Macular and RNFL measurements were acquired from optical coherence tomography (OCT) scans. Birth variables, including birth weight and gestational duration, were obtained from parental questionnaires and health records. Mixed linear models were used in analyses, after adjusting for age, gender, height, axial length and ethnicity. Results: 1,756 and 1,698 children had adequate quality scans of ...
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    2. Retinal Thickness in the Offspring of Diabetic Pregnancies

      Retinal Thickness in the Offspring of Diabetic Pregnancies
      Purpose: To compare macular and peripapillary retinal nerve fiber layer (RNFL) thickness in children from diabetic compared with nondiabetic pregnancy. Design: Cross-sectional study. Methods: As part of the Sydney Myopia Study, 2367 children from grade 7 (age range 11.1 to 14.4 years) completed detailed ocular examinations during 2004–2005. Examination included determination of best-corrected visual acuity (logarithm of minimal angle of resolution) and autorefraction after cycloplegia. Axial length was measured using noncontact interferometry. Optical coherence tomography (OCT) was performed using Stratus OCT through dilated pupils. Participants and parents completed comprehensive questionnaires including questions on birth parameters and medical ...
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    3. Dynamic Analysis of Iris Bowing with Anterior Segment Optical Coherence Tomography

      Purpose: To evaluate dynamic changes of iris configuration and their association with anterior chamber angle width using anterior segment optical coherence tomography (ASOCT). Methods: Forty-six normal subjects with open angles and 40 with narrow angles (Shaffer grade 2 in three or more quadrants during dark room gonioscopy) were analyzed. The dynamic ASOCT dark-light changes of iris bowing were captured with real-time video recording and nasal iris bowing, nasal anterior chamber angle and pupil diameter were measured in serial image frames selected from the video capture. The associations between iris bowing, iris thickness, anterior chamber depth (ACD), age, anterior chamber angle ...
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    4. Evaluation of Retinal Nerve Fiber Layer Progression in Glaucoma: A Study on Optical Coherence Tomography Guided Progression Analysis

      ose. To evaluate optical coherence tomography (OCT) retinal nerve fiber layer thickness (RNFLT) measurement for glaucoma progression analysis. Methods. One hundred sixteen eyes of 64 patients with glaucoma who were observed within a period of 5 years were included. All eyes had at least four serial RNFL measurements obtained with the Stratus OCT (Carl Zeiss Meditec, Dublin, CA) and with the first and last measurements separated by at least 3 years. Visual field (VF) testing was performed on the same day as RNFL imaging. Serial average RNFLTs were evaluated with guided progression analysis (GPA). VF progression was assessed with trend ...
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    5. EVALUATION OF RETINAL NERVE FIBER LAYER PROGRESSION IN GLAUCOMA WITH OPTICAL COHERENCE TOMOGRAPHY GUIDED PROGRESSION ANALYSIS (GPA)

      Objective: To evaluate optical coherence tomography (OCT) retinal nerve fiber layer thickness (RNFLT) measurement for glaucoma progression analysis. Methods: One hundred and sixteen eyes from 64 glaucoma patients followed within a period of 5 years were included. All eyes had at least 4 serial RNFL measurements obtained with the Stratus OCT, and with the first and last measurements separated by at least 3 years. Visual field (VF) was performed on the same day of RNFL imaging. Serial average RNFLT were analyzed with Guided Progression Analysis (GPA). VF progression was evaluated with trend analysis of visual field index (VFI). Factors associated ...
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    6. Assessment of Scleral Spur Visibility With Anterior Segment Optical Coherence Tomography

      Purpose: To develop a grading system to evaluate the scleral spur visibility and to investigate the association between this and the angle width. Methods: Sixty healthy normal subjects (33 with open angles and 27 with narrow angles on dark room gonioscopy) underwent anterior segment imaging with the Visante OCT (Carl Zeiss Meditec, Dublin, CA). The anterior chamber angles at 12-o' clock hour positions were imaged and analyzed. The scleral spur at each clock hour position was independently graded by 2 observers. A scleral spur visibility score (SSVS) of 2 denotes clear visibility of the scleral spur. SSVS of 0 and ...
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    7. Retinal Nerve Fiber Layer Imaging with Spectral-Domain Optical Coherence Tomography: A Variability and Diagnostic Performance Study

      Objective: To evaluate and compare the retinal nerve fiber layer (RNFL) measurement variability, diagnostic sensitivity and specificity for glaucoma detection, and strength of the structure–function association obtained with a spectral-domain optical coherence tomography (OCT) device (Cirrus HD-OCT; Carl Zeiss Meditec, Inc., Dublin, CA) and a time-domain OCT device (Stratus OCT; Carl Zeiss Meditec, Inc.).Design: Prospective, cross-sectional study.Participants: Ninety-seven normal subjects and 83 glaucoma patients.Methods: One eye from each subject was imaged with Cirrus HD-OCT and Stratus OCT. Sixteen and 31 normal eyes were selected randomly to evaluate intravisit repeatability and intervisit reproducibility, respectively. The agreement of ...
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    8. Longitudinal Evaluation of Optic Disc Measurement Variability With Optical Coherence Tomography and Confocal Scanning Laser Ophthalmoscopy.

      Purpose: To evaluate and compare the longitudinal variability of optical coherence tomography (OCT) and confocal scanning laser ophthalmoscopy (CSLO) optic disc measurements. Methods: A total of 25 normal and 50 glaucomatous eyes from 75 subjects were included in the analysis. The optic disc was measured by OCT and CSLO. Three separate measurements collected over an average period of 8.5±0.9 months were used to evaluate reproducibility. Univariate and multivariate regression analyses were performed to evaluate the associations between age, refraction, diagnosis (glaucoma or normal), visual field mean deviation, optic disc area, signal strength variance (OCT), optic disc area ...
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    9. Anterior Chamber Angle Measurement with Anterior Segment Optical Coherence Tomography: A Comparison between Slit Lamp OCT and Visante OCT

      PURPOSE. To compare anterior chamber angle measurements obtained from two anterior segment optical coherence tomography (OCT) instruments and to evaluate their agreements and interobserver reproducibility. METHODS. Forty-nine eyes from 49 healthy normal subjects were studied. The anterior chamber angle was imaged with the Visante anterior segment OCT (Carl Zeiss Meditec, Dublin, CA) and the slit lamp OCT (SLOCT, Heidelberg Engineering, GmbH, Dossenheim, Germany) on one randomly selected eye in each subject and measured by two independent observers. The angle-opening distance (AOD 500), the trabecular–iris angle (TIA 500), and the trabecular–iris space area (TISA 500) at the nasal and ...
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    10. Repeatability and reproducibility of anterior chamber angle measurement with anterior segment optical coherence tomography

      Aim: To evaluate the repeatability and reproducibility of anterior chamber angle measurement obtained by anterior segment optical coherence tomography. Methods: Twenty-five normal subjects were invited for anterior chamber angle imaging with an anterior segment optical coherence tomography (OCT) on one randomly selected eye in three separate visits within a week. Each eye was imaged three times under room light (light intensity = 368 lux) and three times in the dark during the first visit. In the subsequent visits, each eye was imaged once in the light and once in the dark. The angle opening distance (AOD 500) and the trabecular–iris ...
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    1-10 of 10
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