Upgaze or sustained elevation of the eyes, is an alteration of ocular motility initially described in hypoxic coma. We report a 65-year-old woman admitted with hypotension and alteration of sensorium due to the ingestion of 9.5 g of Bupropion. She presented two seizures of short duration, without epileptic activity on the EEG. She had a persistent asynchronous myoclonus in extremities, tachycardia and prolonged Q-t. She suffered a cardiac arrest caused by asystole, which recovered quickly in five minutes. At that moment, upgaze appeared, associated with a persistent ocular opening, which persisted for days, but finally disappeared, without remission of coma. A magnetic resonance imaging done at the eighth day, showed hyperintensity of the oval center and corpus callosum which disappeared in a new imaging study done 30 days later, where images of hypoxia in the basal nuclei and cortex appeared. The patient died forty seven days after admission. Up-gaze is an ominous oculomotor alteration linked to an important but incomplete damage in the cerebral cortex, a condition that perverts some sequences of the ocular opening, reversing the Bell phenomenon and producing eyelid retraction.
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http://dx.doi.org/10.4067/s0034-98872018000500665 | DOI Listing |
J Fr Ophtalmol
December 2024
IHU FOReSIGHT, service 3, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France; Direction de l'hospitalisation et des soins, Inserm, IHU FOReSIGHT, centre d'investigation clinique 1423, centre hospitalier national d'ophtalmologie des Quinze-Vingts, 28, rue de Charenton, 75012 Paris, France; Hôpital Ambroise-Paré, AP-HP, université de Versailles Saint-Quentin en Yvelines, 9, avenue Charles-De-Gaulle, 92100 Boulogne-Billancourt, France; Institut de la vision, IHU FOReSIGHT, Sorbonne université, 17, rue Moreau, 75012 Paris, France.
The anatomy and vasculature of the optic nerve head are complex and subject to numerous variations. The main risk factor for glaucomatous optic neuropathy is elevated intraocular pressure, but many other factors have been identified. A vascular component seems to play an important role in the pathogenesis and/or progression of glaucomatous optic neuropathy, either under the influence of ocular hypertension or as an independent risk factor, particularly as in normal tension glaucoma (NTG).
View Article and Find Full Text PDFHNO
December 2024
Department of Otorhinolaryngology, Head and Neck Surgery, Martin Luther University Halle-Wittenberg, University Hospital Halle (Saale), Ernst-Grube-Str. 40, 06120, Halle (Saale), Germany.
This article describes the surgical treatment of superior semicircular canal dehiscence syndrome (SCDS) by isolating the dehiscence using transmastoid two-point canal plugging while preserving the high-frequency vestibulo-ocular reflex (VOR) of the affected semicircular canal. The superior semicircular canal is opened via a transmastoid approach anterior (as far from the ampulla as possible) and posterior to the dehiscence and then plugged with connective tissue and bone dust. In two clinical exemplary cases, vestibular testing showed that the VOR measured by video head impulse (vHIT) test was preserved (patient 1: gain preoperative 0.
View Article and Find Full Text PDFOphthalmic Physiol Opt
December 2024
École d'optométrie, Université de Montréal, Montreal, Quebec, Canada.
Purpose: The present study aimed to determine the potential impact of scleral lenses on intraocular pressure (IOP) by analysing the Bruch's membrane opening-minimum rim width (BMO-MRW) while the lenses are worn, in a population with keratoconus.
Methods: Participants were required to have keratoconus and be successfully fitted with scleral lenses for at least 3 months. A new pair of optimised scleral lenses was provided before the study.
BMC Ophthalmol
December 2024
Department of Ophthalmology, Eye, Ear, Nose & Throat Hospital of Fudan University, No. 19 BaoQing Road, Shanghai, 200031, China.
Background: Objectively compare the changes in ocular surface parameters in myopic patients who have undergone either SMILE or Implantable Collamer Lens (ICL V4c) surgery.
Methods: This prospective cohort study enrolled 32 patients (32 eyes) undergoing SMILE surgery and 35 patients (35 eyes) receiving ICL V4c intraocular lenses. Examinations were performed at preoperative, 1-week, 1-month, and 3-month postoperative time points.
Comput Biol Med
January 2025
Automatic Control Department, Universitat Politècnica de Catalunya-BarcelonaTech, 08034, Barcelona, Spain; Institut de Recerca Sant Joan de Dèu (IRSJD), 08950, Barcelona, Spain.
Age-related Macular Degeneration (AMD), Cataract, Diabetic Retinopathy (DR) and Glaucoma are the four most common ocular conditions that affect a person's vision. Early detection in the asymptomatic stages can alleviate vision loss or slow down the progression of these diseases. However, manual diagnosis is a costly and tedious process, especially in mass screening applications.
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