1. Articles from Jose Angel Fernandez-Vigo

    1-14 of 14
    1. Dimensions of the limbus-ciliary sulcus region by optical coherence tomography and correlation study in a large population

      Dimensions of the limbus-ciliary sulcus region by optical coherence tomography and correlation study in a large population

      Purpose: To assess the dimensions of the limbus-sulcus region measured by swept-source optical coherence tomography (SS-OCT) and correlation study in a large healthy population. Setting: Centro Internacional de Oftalmología Avanzada. Design: Cross-sectional study. Methods: The dimensions of the limbus-sulcus region were measured in 625 eyes of 625 subjects in the temporal and nasal quadrants using a SS-OCT. The limbus-sulcus distance (LSD), the posterior iris line-ocular surface to limbus distance (PIOLD) and the angle to sulcus distance (ASD) were measured. These distances were then assessed for correlations with the factors age, sex, refractive error, anterior chamber angle (ACA), ciliary muscle ...

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    2. Impact of age, sex and refractive error on conjunctival and Tenon’s capsule thickness dimensions by swept-source optical coherence tomography in a large population

      Impact of age, sex and refractive error on conjunctival and Tenon’s capsule thickness dimensions by swept-source optical coherence tomography in a large population

      Purpose To evaluate conjunctival and Tenon’s capsule thickness (CTT) in a large healthy population using swept-source optical coherence tomography (SS-OCT), investigating the impact of age, sex and refractive error. Methods 630 healthy participants underwent a complete ophthalmological examination. CTT was manually measured in the temporal and nasal quadrants at 0, 1, 2 and 3 mm from the scleral spur using SS-OCT (CTT0, CTT1, CTT2 and CTT3, respectively). These dimensions were then assessed for associations in a multivariate regression model with age, sex, refractive error and anterior scleral thickness (AST). The reproducibility of the CTT measurements was determined in 30 ...

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    3. Anterior scleral thickness dimensions by swept-source optical coherence tomography

      Anterior scleral thickness dimensions by swept-source optical coherence tomography

      Clinical relevance : Given the association of scleral characteristics with many ophthalmological diseases, there is an important need to measure the anterior scleral thickness (AST). Background : This study examined the AST by swept-source optical coherence tomography (SS-OCT) in a large healthy population, assessing also the reproducibility of AST measurements and the correlation with different parameters. Methods : Cross-sectional study in 605 eyes of 605 subjects. AST measurements were made in the temporal and nasal quadrants at 1 (AST1) and 3 mm (AST3) from the scleral spur using SS-OCT. These dimensions were then assessed for associations in a multivariate model with the factors ...

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    4. Updates on the utility of anterior segment optical coherence tomography in the assessment of filtration blebs after glaucoma surgery

      Updates on the utility of anterior segment optical coherence tomography in the assessment of filtration blebs after glaucoma surgery

      The formation of filtration blebs is the main drainage mechanism for reducing intraocular pressure after traditional incisional glaucoma surgery such as trabeculectomy and non-penetrating deep sclerotomy. Early and short-lasting blebs may also occur after canaloplasty. Bleb formation also plays an important role after the implantation of glaucoma drainage devices, including Minimally Invasive Glaucoma Surgery devices. Anterior segment optical coherence tomography (AS-OCT) is a rapid and non-invasive high-resolution imaging technique that has evolved in recent years to become a routine examination. Anterior segment optical coherence tomography (AS-OCT) provides key information in the assessment and follow-up of glaucoma surgery, especially in the ...

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    5. Ciliary muscle dimensions measured by swept-source optical coherence tomography in eyes with primary open-angle glaucoma and healthy eyes

      Ciliary muscle dimensions measured by swept-source optical coherence tomography in eyes with primary open-angle glaucoma and healthy eyes

      Purpose To compare in vivo swept-source optical coherence tomography (SS-OCT) measurements of the ciliary muscle (CM) in patients with primary open-angle glaucoma (POAG) and healthy subjects, and examine correlations between CM dimensions and several covariates. Methods This was a cross-sectional study of the right eyes of 181 subjects: 89 POAG patients and 92 healthy subjects. Using the Triton SS-OCT device (Topcon, Tokyo, Japan), CM length (CML), area (CMA) and thickness measured 1000 µm (CMT1), 2000 µm (CMT2) and 3000 µm (CMT3) from the scleral spur were determined in the temporal and nasal quadrants. POAG patients were subjected to visual field ...

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    6. Reproducibility of macular and optic nerve head vessel density measurements by swept-source optical coherence tomography angiography

      Reproducibility of macular and optic nerve head vessel density measurements by swept-source optical coherence tomography angiography

      Purpose: To assess the reproducibility of swept-source optical coherence tomography angiography (SS-OCTA) for macular and optic nerve head (ONH) vessel density (VD). Methods: Cross-sectional study using the Triton OCTA (Topcon, Tokyo, Japan), for VD (%) measurements in 40 eyes of 40 healthy subjects on two 6 × 6 mm scans of the macula and ONH across five subfields (central, superior, inferior, temporal, and nasal) at different segmentation levels: superficial capillary plexus (SCP), deep capillary plexus (DCP), outer retina, and choriocapillaris. Reproducibility values were summarized as intraclass correlation coefficients (ICCs) and coefficients of variations (CV). Results: ICCs for the macular VD measurements in ...

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    7. Impacts of implantable collamer lens V4c placement on angle measurements made by optical coherence tomography: two-year follow up

      Impacts of implantable collamer lens V4c placement on angle measurements made by optical coherence tomography: two-year follow up

      Purpose To determine iridocorneal angle changes produced after two years of implantable collamer lens ® (ICL) V4c (STAAR Surgical AG) placement by Fourier-domain optical coherence tomography (FD-OCT). Design Prospective interventional case series. Methods In 54 eyes of 27 myopic subjects FD-OCT (RTVue ® , Optovue Inc.) iridocorneal angle measurements were made before, and 1 month, 3 months, 1 year and 2 years after ICL implant. Trabecular-iris angle (TIA), angle opening distance 500 μm from the scleral spur (AOD 500 ) and iridotrabecular contact length (TICL) were compared among these time points and the quadrants nasal, temporal and inferior. Results Preoperative TIAs were 49.5 ...

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    8. Agreement Between Three Optical Coherence Tomography Devices to Assess the Insertion Distance and Thickness of Horizontal Rectus Muscles

      Agreement Between Three Optical Coherence Tomography Devices to Assess the Insertion Distance and Thickness of Horizontal Rectus Muscles

      PURPOSE: To assess the agreement between two different spectral domain (SD-OCT) and one swept source (SS-OCT) optical coherence tomography device to measure the insertion distance and the thickness of the horizontal rectus muscles. . METHODS: Seventy eyes from 35 healthy patients were studied. Three OCT instruments—Spectralis (Heidelberg Engineering Inc., Heidelberg, Germany), Cirrus 5000 (Carl Zeiss Meditec, Dublin, CA), and Triton (Topcon, Inc., Tokyo, Japan)—were used to measure the limbus insertion distance and the thickness of the lateral rectus and medial rectus muscles. The intraclass correlation coefficient (ICC) was calculated to determine the reproducibility and the agreement between the three ...

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    9. Quantification of trabecular-iris contact and its prevalence by optical coherence tomography in a healthy Caucasian population

      Quantification of trabecular-iris contact and its prevalence by optical coherence tomography in a healthy Caucasian population

      To determine the prevalence of trabecular-iris contact (TIC) and quantify this contact in healthy Caucasian individuals using Fourier-domain optical coherence tomography (FD-OCT). For this cross-sectional study, 2,012 eyes of 1,006 healthy subjects were recruited among individuals undergoing a routine ophthalmologic checkup. In each participant, age, sex, intraocular pressure, and spherical refractive error were first recorded along with anterior chamber depth and volume, central corneal thickness measured with the Pentacam, and axial length with the IOLMaster. Anterior chamber angle variables and the presence of TIC in the horizontal quadrants were determined by anterior segment FD-OCT (RTVue 100®). When TIC ...

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    10. Fourier domain optical coherence tomography to assess the iridocorneal angle and correlation study in a large Caucasian population

      Fourier domain optical coherence tomography to assess the iridocorneal angle and correlation study in a large Caucasian population

      Background Recently, novel anatomic parameters that can be measured by optical coherence tomography (OCT), have been identified as a more objective and accurate method of defining the iridocorneal angle. The aim of the present study is to measure the iridocorneal angle by Fourier domain (FD) OCT and to identify correlations between angle measurements and subject factors in a large healthy Caucasian population. Methods A cross sectional study was performed in 989 left eyes of 989 healthy subjects. The iridocorneal angle measurements: trabecular-iris angle (TIA), angle opening distance (AOD 500 ) and trabecular-iris space area (TISA 500 ) 500 μm from the scleral ...

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    11. Effects of Implantable Collamer Lens V4c placement on iridocorneal angle measurements by Fourier domain optical coherence tomography

      Effects of Implantable Collamer Lens V4c placement on iridocorneal angle measurements by Fourier domain optical coherence tomography

      Purpose To assess by Fourier domain optical coherence tomography (FD-OCT) changes produced in iridocorneal angle measurements in patients undergoing Visian Implantable Collamer Lens ® (ICL) V4c (STAAR Surgical AG) placement. Design Prospective interventional case series. Methods In 50 eyes of 25 myopic subjects consecutively scheduled for ICL implant, FD-OCT (RTVue ® , Optovue Inc.) iridocorneal angle measurements were made before and 1 and 3 months after surgery. Trabecular-iris angle (TIA), and angle opening distance 500 μm anterior to the scleral spur (AOD 500 ) were compared among the quadrants nasal, temporal and inferior, and correlations with ocular variables including lens vault were examined. Results ...

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      Mentions: Visionix
    12. Morphometry of the trabecular meshwork in vivo in a healthy population using Fourier domain optical coherence tomography

      Morphometry of the trabecular meshwork in vivo in a healthy population using Fourier domain optical coherence tomography

      Purpose: To measure the length, thickness and area of the trabecular meshwork (TM) in vivo using Fourier domain optical coherence tomography (FD-OCT) in a Caucasian population of healthy subjects. Methods: Cross-sectional study of 1,006 healthy subjects. Left eyes were randomly selected. Age, gender, intraocular pressure and spherical refractive error were noted down. The depth and volume of the anterior chamber and the central corneal thickness were measured with Pentacam®, while IOL Master® was used to measure the axial length. The length, thickness and area of the TM were measured through FD-OCT RTVue®. A study was carried out to determine ...

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    1-14 of 14
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    Morphometry of the trabecular meshwork in vivo in a healthy population using Fourier domain optical coherence tomography Effects of Implantable Collamer Lens V4c placement on iridocorneal angle measurements by Fourier domain optical coherence tomography Fourier domain optical coherence tomography to assess the iridocorneal angle and correlation study in a large Caucasian population Quantification of trabecular-iris contact and its prevalence by optical coherence tomography in a healthy Caucasian population Agreement Between Three Optical Coherence Tomography Devices to Assess the Insertion Distance and Thickness of Horizontal Rectus Muscles Impacts of implantable collamer lens V4c placement on angle measurements made by optical coherence tomography: two-year follow up Reproducibility of macular and optic nerve head vessel density measurements by swept-source optical coherence tomography angiography Ciliary muscle dimensions measured by swept-source optical coherence tomography in eyes with primary open-angle glaucoma and healthy eyes Updates on the utility of anterior segment optical coherence tomography in the assessment of filtration blebs after glaucoma surgery Impact of age, sex and refractive error on conjunctival and Tenon’s capsule thickness dimensions by swept-source optical coherence tomography in a large population Editorial – Optical Coherence Tomography Angiography: Considerations Regarding Diagnostic Parameters Imaging of the optic nerve: technological advances and future prospects