1. Articles from Parisa Abdi

    1-4 of 4
    1. Ray Tracing versus Thin-Lens Formulas for IOL Power Calculation Using Swept-Source Optical Coherence Tomography Biometry

      Ray Tracing versus Thin-Lens Formulas for IOL Power Calculation Using Swept-Source Optical Coherence Tomography Biometry

      Purpose: To evaluate the ray tracing method's accuracy employing Okulix ray tracing software and thin-lens formulas to calculate intraocular lens (IOL) power using a swept-source optical coherence tomography (SS-OCT) biometer (OA2000). Methods: A total of 188 eyes from 180 patients were included in this study. An OA-2000 optical biometer was used to collect biometric data. The predicted postoperative refraction based on thin-lens formulas including SRK/T, Hoffer Q, Holladay 1, and Haigis formulas and the ray tracing method utilizing the OKULIX software was determined for each patient. To compare the accuracy of approaches, the prediction error and the absolute ...

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    2. Longitudinal evaluation of posterior corneal power by anterior segment optical coherence tomography 18 months or more after photorefractive keratectomy

      Longitudinal evaluation of posterior corneal power by anterior segment optical coherence tomography 18 months or more after photorefractive keratectomy

      Purpose: To investigate the change in anterior, posterior, and net corneal power more than 18 months after photorefractive keratectomy (PRK) by RTVue anterior segment optical coherence tomography (OCT). Setting: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. Design: Prospective observational study. Methods: PRK was performed using Technolas TENEO 317 laser platform. Anterior, posterior, and net corneal power was measured by the RTVue-XR anterior segment OCT system with the Pachymetry + Cpwr scan pattern at baseline and 1, 3, 6, 12, 18, and >18 (up to 27) months after PRK. Results: Three hundred and twenty-six eyes of 163 patients (age ...

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    3. Evaluation of Lamina Cribrosa and Choroid in Nonglaucomatous Patients With Pseudoexfoliation Syndrome Using Spectral-Domain Optical Coherence Tomography

      Evaluation of Lamina Cribrosa and Choroid in Nonglaucomatous Patients With Pseudoexfoliation Syndrome Using Spectral-Domain Optical Coherence Tomography

      Purpose : To evaluate the lamina cribrosa (LC) and peripapillary choroid in patients with pseudoexfoliation syndrome (PXS). Methods : In this cross-sectional study, one eye each of 32 nonglaucomatous PXS cases and 29 healthy volunteers were enrolled. The optic discs were scanned using enhanced depth imaging spectral-domain optical coherence tomography, and measurements were obtained using HEYEX software 6.0. LC and other related variables at three areas (mid-superior, center, and mid-inferior) and peripapillary choroidal thickness were determined. Linear mixed modeling was used to adjust the variables. Results : After adjustment for age, sex, and axial length, there was no significant difference between the ...

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      Mentions: UCSF
    4. Quantification of peripapillary total retinal volume in pseudopapilledema and mild papilledema using spectral-domain optical coherence tomography

      Quantification of peripapillary total retinal volume in pseudopapilledema and mild papilledema using spectral-domain optical coherence tomography

      Purpose to distinguish differences in retinal nerve fiber layer (RNFL) thickness and peripapillary total retinal volume between eyes with papilledema, pseudopapilledema, and normal findings. Design Cohort study Methods Forty-two eyes with mild papilledema, 37 eyes with congenitally elevated optic disc (pseudopapilledema), and 34 normal eyes met the inclusion criteria at 1 academic institution (in Iran) and underwent neuro-ophthalmic examination. Spectral-domain optical coherence tomography scans surrounding the optic disc were performed in each eye of patients and subjects. Main outcome measures were mean RNFL thickness and peripapillary total retinal volume measurements (inner and outer rings volumes) that were compared between groups ...

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    1-4 of 4
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    Quantification of peripapillary total retinal volume in pseudopapilledema and mild papilledema using spectral-domain optical coherence tomography Evaluation of Lamina Cribrosa and Choroid in Nonglaucomatous Patients With Pseudoexfoliation Syndrome Using Spectral-Domain Optical Coherence Tomography Longitudinal evaluation of posterior corneal power by anterior segment optical coherence tomography 18 months or more after photorefractive keratectomy Ray Tracing versus Thin-Lens Formulas for IOL Power Calculation Using Swept-Source Optical Coherence Tomography Biometry Influence of scan direction on subfoveal choroidal vascularity index using optical coherence tomography Subthreshold Nanosecond Laser for Non-resolving Central Serous Chorioretinopathy: A Double-masked Sham-controlled Randomised Trial Optical Coherence Tomography Angiography (OCTA) to Assess Cardiac Output and Cerebral Perfusion at the Time of Children's Cardiac Surgery Recent advances in optical coherence tomography for anterior segment imaging in small animals and their clinical implications Intraoperative optical coherence tomography-guided donor corneal tissue assessment and preparation Peripapillary and fovea avascular zone optical coherence tomography angiography parameters in exfoliation glaucoma versus primary open-angle glaucoma versus healthy eyes Comparison of the proposed DCNN model with standard CNN architectures for retinal diseases classification Massachusetts General Hosptial Receives NIH Grant for Screening for Barrett's Esophagus Progressors with Multimodality Tethered Capsule Image-Guided Biopsy