1. Susana Marcos

    0 Comments Leave a Comment

    1-15 of 36 1 2 3 »
    1. Mentioned In 36 Articles

    2. Method for calibrating and correcting the scanning distortion of an optical coherence tomography system

      Method for calibrating and correcting the scanning distortion of an optical coherence tomography system
      Method for calibrating and correcting the scanning distortion of any optical coherence tomography system by using reference patterns and obtaining mathematical relationships between the positions of the reference points in a reference pattern and the local coordinates of said reference points, said coordinates are obtained by means of said optical coherence tomography system
      Read Full Article
    3. OCT-based full crystalline lens shape change during accommodation in vivo

      OCT-based full crystalline lens shape change during accommodation in vivo
      The full shape of the accommodating crystalline lens was estimated using custom three-dimensional (3-D) spectral OCT and image processing algorithms. Automatic segmentation and distortion correction were used to construct 3-D models of the lens region visible through the pupil. The lens peripheral region was estimated with a trained and validated parametric model. Nineteen young eyes were measured at 0-6 D accommodative demands in 1.5 D steps. Lens volume, surface ...
      Read Full Article
    4. Optical Coherence Tomography Based Estimates of Crystalline Lens Volume, Equatorial Diameter, and Plane Position

      Optical Coherence Tomography Based Estimates of Crystalline Lens Volume, Equatorial Diameter, and Plane Position
      Purpose : Measurement of crystalline lens geometry in vivo is critical to optimize performance of state-of-the-art cataract surgery. We used custom-developed quantitative anterior segment optical coherence tomography (OCT) and developed dedicated algorithms to estimate lens volume (VOL), equatorial diameter (DIA), and equatorial plane position (EPP). Methods : The method was validated ex vivo in 27 human donor (1971 years of age) lenses, which were imaged in three-dimensions by OCT. In vivo conditions ...
      Read Full Article
    5. OCT-based crystalline lens topography in accommodating eyes

      OCT-based crystalline lens topography in accommodating eyes
      ustom Spectral Domain Optical Coherence Tomography (SD-OCT) provided with automatic quantification and distortion correction algorithms was used to measure anterior and posterior crystalline lens surface elevation in accommodating eyes and to evaluate relationships between anterior segment surfaces. Nine young eyes were measured at different accommodative demands. Anterior and posterior lens radii of curvature decreased at a rate of 0.78 0.18 and 0.13 0.07 mm/D, anterior ...
      Read Full Article
    6. Observation of sound-induced corneal vibrational modes by optical coherence tomography

      Observation of sound-induced corneal vibrational modes by optical coherence tomography
      The mechanical stability of the cornea is critical for maintaining its normal shape and refractive function. Here, we report an observation of the mechanical resonance modes of the cornea excited by sound waves and detected by using phase-sensitive optical coherence tomography. The cornea in bovine eye globes exhibited three resonance modes in a frequency range of 50-400 Hz. The vibration amplitude of the fundamental mode at 80-120 Hz was ~8 ...
      Read Full Article
    7. Numerical model of optical coherence tomographic vibrography imaging to estimate corneal biomechanical properties

      Numerical model of optical coherence tomographic vibrography imaging to estimate corneal biomechanical properties
      Most techniques measuring corneal biomechanics in vivo are biased by side factors. We demonstrate the ability of optical coherence tomographic (OCT) vibrography to determine corneal material parameters, while reducing current prevalent restrictions of other techniques (such as intraocular pressure (IOP) and thickness dependency). Modal analysis was performed in a finite-element (FE) model to study the oscillation response in isolated thin corneal flaps/eye globes and to analyse the dependency of ...
      Read Full Article
    8. Madrid-MIT +Vision Consortium announces Fellowships in Translational Biomedical Imaging

      Madrid-MIT +Vision Consortium announces Fellowships in Translational Biomedical Imaging
      Madrid-MIT +Vision Consortium announces Fellowships in Translational Biomedical Imaging. Fellowships entail a training program in Madrid and Boston and development of collaborative projects between institutions in both cities. The Institute of Optics-CSIC (Madrid), as a member of the Consortium, encourages postdoctoral applications in the fields of optical ocular imaging within the frame of this program. Application deadline: April 30th 2014. Starting date: September 2th 2014. Full announcement: http://viobiolabs.wordpress ...
      Read Full Article
    9. Eye Biometry Using Quantitative 3-D OCT

      Eye Biometry Using Quantitative 3-D OCT
      Cataracts cause the crystalline lens of the eye to progressively lose its transparency, which decreases vision. It is one of the major causes of vision loss in our aging population. Modern cataract surgery involves the replacement of the cloudy lens with an intraocullar lens (IOL). IOL designs are becomeing more sophisticated, with benefits such as aspheric surfaces, multifocality, and the capability to change position ore shape to restore accommodation.
      Read Full Article
    10. Intraocular lens alignment from an en face optical coherence tomography image Purkinje-like method

      Intraocular lens alignment from an en face optical coherence tomography image Purkinje-like method
      Measurement of intraocular lens (IOL) alignment implanted in patients in cataract surgery is important to understand their optical performance. We present a method to estimate tilt and decentration of IOLs based on optical coherence tomography (OCT) images. En face OCT images show Purkinje-like images that correspond to the specular reflections from the corneal and IOL surfaces. Unlike in standard Purkinje-imaging, the tomographic nature of OCT allows unequivocal association of the ...
      Read Full Article
    11. Ocular and Optical Coherence Tomography-Based Corneal Aberrometry in Keratoconic Eyes Treated by Intracorneal Ring Segments

      Ocular and Optical Coherence Tomography-Based Corneal Aberrometry in Keratoconic Eyes Treated by Intracorneal Ring Segments
      ...cas (CSIC), Madrid, Spain , * Ignacio Jiménez-Alfaro Affiliations + Fundación Jiménez Díaz, Madrid, Spain , * Susana Marcos Affiliations + Instituto de Óptica “Daza de Valdés”, Consejo Superior de Investigaciones Científ...
      Read Full Article
    12. Static and dynamic crystalline lens accommodation evaluated using quantitative 3-D OCT

      Static and dynamic crystalline lens accommodation evaluated using quantitative 3-D OCT
      Custom high-resolution high-speed anterior segment spectral domain Optical Coherence Tomography (OCT) provided with automatic quantification and distortion correction algorithms was used to characterize three-dimensionally (3-D) the human crystalline lens in vivo in four subjects, for accommodative demands between 0 to 6 D in 1 D steps. Anterior and posterior lens radii of curvature decreased with accommodative demand at rates of 0.73 and 0.20 mm/D, resulting in an ...
      Read Full Article
    13. Quantitative OCT-based Longitudinal Evaluation of Intracorneal Ring Segment Implantation in Keratoconus

      Quantitative OCT-based Longitudinal Evaluation of Intracorneal Ring Segment Implantation in Keratoconus
      PURPOSE. To characterize the geometrical properties of keratoconic corneas and upon intracorneal ring segments (ICRS) implantation, using custom-developed Optical Coherence Tomography (OCT). METHODS. Ten keratoconic corneas were measured pre and post-ICRS surgery (7, 30, 90 days). Corneal topographic and pachymetric maps were obtained from 3-D images acquired with OCT, provided with custom algorithms for image analysis, distortion correction, and quantification. The 3-D positioning of the ICRS was also estimated longitudinally ...
      Read Full Article
    14. Full OCT anterior segment biometry: an application in cataract surgery

      Full OCT anterior segment biometry: an application in cataract surgery
      In vivo three-dimensional (3-D) anterior segment biometry before and after cataract surgery was analyzed by using custom high-resolution high-speed anterior segment spectral domain Optical Coherence Tomography (OCT). The system was provided with custom algorithms for denoising, segmentation, full distortion correction (fan and optical) and merging of the anterior segment volumes (cornea, iris, and crystalline lens or IOL), to provide fully quantitative data of the anterior segment of the eye. The ...
      Read Full Article
    15. 1-15 of 36 1 2 3 »
  1. Categories

    1. Applications:

      Art, Cardiology, Dentistry, Dermatology, Developmental Biology, Gastroenterology, Gynecology, Microscopy, NDE/NDT, Neurology, Oncology, Ophthalmology, Other Non-Medical, Otolaryngology, Pulmonology, Urology
    2. Business News:

      Acquisition, Clinical Trials, Funding, Other Business News, Partnership, Patents
    3. Technology:

      Broadband Sources, Probes, Tunable Sources
    4. Miscellaneous:

      Jobs & Studentships, Student Theses, Textbooks
  2. About Susana Marcos

    Susana Marcos

    Susana Marcos received her MS (1992) and PhD (1996) degrees in Physics from the University of Salamanca (Spain). She carried out her predoctoral research at the Instituto de Optica, Consejo Superior de Investigaciones Cientificas (CSIC), Madrid, Spain, in the field of physiological optics, working on a novel technique to resolve the foveal cones in vivo.

    She was a Postdoctoral Research Fellow for three years at Stephen A. Burns' lab at the Schepens Eye Research Institute, Harvard University. She was recipient of a Fulbright Postdoctoral Fellowship and a Human Frontier Science Postdoctoral Fellowship.

     

    Prof. Marcos is currently a Professor of Research, Profesora de Investigación (at the Instituto de Optica in Madrid (Spain). She leads several research grants on visual optics and biophotonics, funded by national and international agencies, as well as international companies. She is the director of the Visual Optics and Biophotonics lab, and supervises the work of several Ph.D Students. Since August 2008, she is also the Director of the Institute of Optics (CSIC).

     

    Susana Marcos has pioneered researh in novel techniques to assess the optical properties of the ocular optics and the human retina.  She has published more than 75 peer-reviewed publication (with over 2000 citations), and has been invited to lecture in over 100 international conferences and research centers. Her work has been recognized with several national and international awards, including the Adolph Lomb Medal, awarded by the Optical Society of America, the European Young Investigator Award, from EURHORCs-ESF, and the ICO Prize awarded by the International Commission for Optics.

     

    Susana Marcos served as the Chair of the Applications of Visual Science Technical Group at the Optical Society of America, President of the Visual Sciences Committee at the Spanish Optical Society and she is a Program Committee member of the Visual Psychophysics and Physiological Optics of the Association of Reseach in Vision and Ophthalmology. She is also elected Fellow of the European Optical Society and an elected Fellow of the Optical Society of America. She is a Topical Editor in Vision Research and Biomedical Optics Express, has been member of the organizing committee in several international meetings and served in pannels for several funding agencies and organizations.

     

    Laboratory website: http://www.vision.csic.es