Guirao-Navarro, M.C. (María Concepción)

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2018 - 20202

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    OCT angiography: a technique for the assessment of retinal and optic nerve diseases in the pediatric population
    (MDPI AG, 2018) Guirao-Navarro, M.C. (María Concepción); Saenz-de-Viteri-Vazquez, M. (Manuel); Zarranz-Ventura, J. (Javier); Barrio-Barrio, J. (Jesús)
    Optical coherence tomography angiography (OCT-A) is a novel, rapidly evolving, non-invasive imaging technique that allows images of the retinal vasculature to be obtained in a few seconds. Blood vessels of different retinal vascular plexuses and the foveal avascular zone (FAZ) can be examined without the administration of any contrast or dye. Due to these characteristics, OCT-A could be an excellent complementary test to study retinal vascularization in children. Until now, most of the studies with OCT-A have been conducted in adults and only a few have been carried out in children. In this review, we describe the principles and advantages of OCT-A over traditional imaging methods and provide a summary of the OCT-A findings in retinopathy of prematurity and other retinal and optic disc pathologies in children. In view of the promising results from studies, the advantages of a relatively rapid and non-invasive method to assess the retinal vasculature makes OCT-A a tool of which applications in the field of pediatric ophthalmology will be expanded in the near future for patient diagnosis and follow-up in every day clinical practice.
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    Ab interno implantation of glaucoma drainage devices tubes in the posterior chamber
    (Springer, 2020) Moreno-Montañes, J. (Javier); Guirao-Navarro, M.C. (María Concepción); Argüeso, F. (Francisco)
    Background: Glaucoma drainage device (GDD) implantation in the anterior chamber are associated with corneal complications. We describe a novel technique to implant GDD tubes in the posterior chamber of pseudophakic eyes. Methods: Ten patients with glaucoma who required GDD tube implantation were included. Results: The new technique begins with the passage of one of two straight needles existing at each end of a 10–0 Polypropylene suture through the GDD tube. A 23-gauge needle then is inserted at an angle 180° away and passed from the anterior to the posterior chamber and finally through the sclera. The two suture straight needles from the 10–0 Polypropylene suture are positioned in the lumen of the 23-gauge needle. The 23-gauge needle is then extracted from the eye by passing the 2 needles through the lumen. The suture remains inside the posterior chamber, and the tube is inserted into the posterior chamber by pulling on the suture from the other side. No intra-operative complications were found such as bleeding, vitreous tube placement, bent tubes, etc. Conclusions: This surgical procedure to implant a tube into the posterior chamber of the pseudophakic eyes is uncomplicated and facilitates the insertion of the flexible tube into the posterior chamber. This eliminates the tendency of the tube to enter the vitreous as the tube is always placed in the posterior chamber away from the cornea.