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https://www.readbyqxmd.com/read/29785312/a-case-of-progressive-stroke-on-posterior-circulation-with-transient-bilateral-oculomotor-palsy
#1
Chiaki Takahashi
Infarction located in the midbrain and pons presents various ophthalmic symptoms, because of the damage of the nuclei that control the movement of internal and external ocular and palpebral muscles. We experienced a case which presented with rare ocular symptoms and course. A 61-year-old man presented with left hemiparesis and dysarthria, bilateral ptosis, and bilateral impaired eyeball movement: right eyeball movement was totally impaired and left could only perform slight adduction. MRI showed fresh stroke in the right thalamus, cerebral crus, and posterior lobe and cuneate lesion on bilateral paramedian portion of the midbrain...
2018: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/29782814/primary-assessment-of-the-patient-with-orbital-fractures-should-include-pupillary-response-and-visual-acuity-changes-to-detect-occult-major-ocular-injuries
#2
Jeffrey Chow, Krishnan Parthasarathi, Patrick Mehanna, Eline Whist
PURPOSE: Sight-threatening injuries associated with orbital fractures are of major concern to maxillofacial surgeons whom are often the first asked to assess these patients. Eliciting signs and symptoms that are predictive of these injuries would allow expedited ophthalmic consultation and appropriate management. We hypothesized that abnormal pupillary response is predictive of major ocular injuries. PATIENTS AND METHODS: A retrospective cohort study of patients with facial fractures was instituted with review of all associated ophthalmic injuries...
May 1, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29768970/neurologic-manifestations-of-antiphospholipid-syndrome
#3
I F Ricarte, L A Dutra, F F Abrantes, F F Toso, O G P Barsottini, G S Silva, A W S de Souza, D Andrade
Neurological involvement in antiphospholipid antibody syndrome (APS) is common, and its occurrence increases morbidity and mortality. Patients may present variable neurological involvement, such as cerebrovascular disease, cognitive dysfunction, headache, seizures, movement disorders, multiple sclerosis-like syndrome, transverse myelitis and ocular symptoms. Most neurological manifestations are associated with thrombosis of the microcirculation or of large vessels; nonetheless, there is compelling evidence suggesting that, in some cases, symptoms are secondary to an immune-mediated pathogenesis, with direct binding of aPL on neurons and glia...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29758373/ruptured-vertebral-artery-dissecting-aneurysm-as-a-risk-factor-for-ocular-symptoms-accompanied-with-subarachnoid-hemorrhage
#4
Yosuke Moteki, Yasunari Niimi, Yoshikazu Okada, Takakazu Kawamata
OBJECTIVE: Although ruptured vertebral artery dissecting aneurysms (VADAs) are often associated with ocular symptoms, such as abducent nerve palsy and Terson's syndrome (TS), their frequency and risk factors in comparison with those associated with ruptured aneurysms in other locations have not been reported. METHODS: A total of 343 patients with non-traumatic subarachnoid hemorrhage were treated in our hospital from April 2002 to May 2016, among which 35 (10.2%) had VADA as the origin of hemorrhage...
May 11, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29740388/central-lesions-with-selective-semicircular-canal-involvement-mimicking-bilateral-vestibulopathy
#5
REVIEW
Luke Chen, G Michael Halmagyi
Bilateral vestibulopathy (BVP), which is due to peripheral lesions, may selectively involve certain semicircular canal (SCC). Recent eye movement recordings with search coil and video head impulse test (HIT) have provided insight in central lesions that can cause bilateral and selective SCC deficit mimicking BVP. Since neurological signs or ocular motor deficits maybe subtle or absent, it is critical to recognize central lesions correctly since there is prognostic and treatment implication. Acute floccular lesions cause bilateral horizontal SCC (HC) impairment while leaving vertical SCC function unaffected...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29739665/clinical-comparison-of-optimum-and-large-diameter-soft-contact-lenses
#6
James Wolffsohn, Lee Hall, Graeme Young
PURPOSE: To compare the clinical performance of large diameter lenses with optimally fit lenses in the same material and monocurve back surface design. METHOD: In a four-visit, randomised, bilateral, crossover, study, 25 myopic subjects wore optimum diameter lenses (control) and large diameter lenses (test) in random succession for 1 week each. Both study lenses were made of methafilcon A and of an identical design. Trial fittings with Frequency 55 (Coopervision) lenses modified with a design algorithm were used to determine the appropriate custom-made study lenses...
May 5, 2018: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/29730803/paroxysmal-ocular-movements-an-early-sign-in-glut1-deficiency-syndrome
#7
Sofia Reis, Joana Matias, Raquel Machado, José Paulo Monteiro
The authors describe a 3-year-old female, diagnosed with GLUT1 deficiency Syndrome, with a previously unreported mutation in exon 7 of the SLC2A1 gene: c.968_972 + 3del P. (Val323Alafs*53), characterized by a classic phenotypic of acquired microcephaly, developmental delay, ataxia, spasticity, and epilepsy. Ketogenic diet was started at the age of 30 months with epilepsy improvement. She presented paroxysmal ocular movements in the first 12 months of life, recently defined as "aberrant gaze saccades", that are present in the early phase of visual system development, being one of the first disease signs, but easily disregarded...
May 5, 2018: Metabolic Brain Disease
https://www.readbyqxmd.com/read/29724871/anteromedial-thalamic-infarct-a-rare-presentation
#8
Syed H Shabbir, Faryal Nadeem, Daniel Labovitz
We report a rare presentation of an anteromedial thalamic infarct in a 50-year-old woman with acute onset left eye ptosis, vertical gaze paresis and confusion. MRI identified an acute left anteromedial thalamic infarct with a severe left P1 stenosis. Thalamic infarcts are associated with marked neurobehavioural disturbances with dominant thalamic lesions causing language deficits, verbal perseveration, memory disturbances, abulia and disorientation. Ocular movement deficits can also be present and typically accompany paramedian lesions...
May 2, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29716820/man-with-a-swollen-eye-nonspecific-orbital-inflammation-in-an-adult-in-the-emergency-department
#9
Xiao Chi Zhang, Brittney Statler, Selim Suner, Maureen Lloyd, David Curley, Michael E Migliori
BACKGROUND: Nonspecific orbital inflammation (NSOI) is a rare idiopathic ocular pathology characterized by unilateral, painful orbital swelling without identifiable infectious or systemic disorders, which can be complicated by optic nerve compromise. CASE REPORT: A 50-year-old man presented to the Emergency Department with recurring, progressive painless left eye swelling, decreased visual acuity, and binocular diplopia in the absence of trauma, infection, or known malignancy...
April 28, 2018: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29709661/effect-of-intermittent-shear-stress-on-corneal-epithelial-cells-using-an-in-vitro-flow-culture-model
#10
Ulrike Hampel, Fabian Garreis, Fabian Burgemeister, Nicole Eßel, Friedrich Paulsen
PURPOSE: The aim of this study was to establish and to evaluate an in vitro model for culturing human telomerase-immortalized corneal epithelial (hTCEpi) cells under adjustable medium flow mimicking the movements of the tear film on the ocular surface. METHODS: Using an IBIDI pump system, cells were cultured under unidirectional, continuous or oscillating, discontinuous medium flow. Cell surface and cytoskeletal architecture were investigated by scanning electron microscopy and immunofluorescence...
April 27, 2018: Ocular Surface
https://www.readbyqxmd.com/read/29704131/factors-influencing-stereopsis-in-patients-with-both-refractive-accommodative-esotropia-and-amblyopia
#11
Burçin Çakır, Özlem Bursalı, Sedat Özmen, Nilgün Özkan Aksoy, Tural Babashli, Gursoy Alagöz
PURPOSE: Potential factors influencing stereopsis were investigated in patients with both refractive accommodative esotropia (RAE) and amblyopia. MATERIALS AND METHODS: A retrospective chart review was performed to find out all patients with the diagnosis of both RAE and amblyopia. Patients are classified into two groups: group 1 (with stereopsis) and group 2 (without stereopsis). Onset age of RAE, history of strabismus in family members, time of amblyopia treatment, mean spherical equivalent, anisometropia, ocular movement disorders, especially, overaction of inferior oblique (IO) muscle, visual acuity difference (VAD) between eyes, best-corrected visual acuity (BCVA) levels of amblyopic and normal eyes and the presence of alternation of fixation (AOF) were investigated as possible factors...
April 27, 2018: International Ophthalmology
https://www.readbyqxmd.com/read/29693497/ocular-neuromyotonia-case-reports-and-literature-review
#12
Anne-Catherine Stockman, Catherine Cassiman, Maria Dieltiëns, Hilde Janssens, Maria Van Lammeren, Liesbet Beelen, Veerle Van Bellinghen
Ocular neuromyotonia (ONM) is a rare eye movement disorder, presenting as a paroxysmal involuntary spasm of one or more extra-ocular muscles, that can persist for a few seconds up to several minutes. The phenomenon is caused by the contraction of an extra-ocular muscle, excited by a damaged nerve, which leads to delayed muscle relaxation. We present eight patients with this rare condition together with an overview of the literature on all published ONM cases. One of the presented cases is possibly secondary to hypovitaminosis D...
April 25, 2018: Strabismus
https://www.readbyqxmd.com/read/29681880/exploring-the-role-of-temporoparietal-cortex-in-upright-perception-and-the-link-with-torsional-eye-position
#13
Jorge Otero-Millan, Ariel Winnick, Amir Kheradmand
Upright perception is a key aspect of orientation constancy, as we maintain a stable perception of the world despite continuous movements of our eyes, head, and body. Torsional position of the eyes can impact perception of upright by changing orientation of the images on the retina relative to gravity. Here, we investigated the role of temporoparietal cortex in upright perception with respect to ocular torsion, by means of the inhibitory effect of continuous theta burst transcranial magnetic stimulation (TMS)...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29680227/cerebellar-transcranial-direct-current-stimulation-interacts-with-bdnf-val66met-in-motor-learning
#14
Rick van der Vliet, Zeb D Jonker, Suzanne C Louwen, Marco Heuvelman, Linda de Vreede, Gerard M Ribbers, Chris I De Zeeuw, Opher Donchin, Ruud W Selles, Jos N van der Geest, Maarten A Frens
BACKGROUND: Cerebellar transcranial direct current stimulation has been reported to enhance motor associative learning and motor adaptation, holding promise for clinical application in patients with movement disorders. However, behavioral benefits from cerebellar tDCS have been inconsistent. OBJECTIVE: Identifying determinants of treatment success is necessary. BDNF Val66Met is a candidate determinant, because the polymorphism is associated with motor skill learning and BDNF is thought to mediate tDCS effects...
April 11, 2018: Brain Stimulation
https://www.readbyqxmd.com/read/29676210/reduced-purposeful-head-movements-during-community-ambulation-following-unilateral-vestibular-loss
#15
Serene Sulyn Paul, Leland E Dibble, Raymond G Walther, Clough Shelton, Richard Klaus Gurgel, Mark Eric Lester
BACKGROUND: Individuals with unilateral vestibular hypofunction (UVH) alter their movement and reduce mobility to try to stabilize their gaze and avoid symptoms of dizziness and vertigo. OBJECTIVE: To determine if individuals with UVH 6 weeks after surgery demonstrate altered head and trunk kinematics during community ambulation. METHODS: A total of 15 vestibular schwannoma patients with documented postoperative unilateral vestibular loss and 9 healthy controls with symmetrical vestibulo-ocular reflexes participated in this cross-sectional study...
April 1, 2018: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29666779/a-multidisciplinary-approach-for-rehabilitation-of-enucleated-sockets-ocular-implants-with-custom-ocular-prosthesis
#16
Minati Choudhury, Fathima Banu, Shanmuganathan Natarajan, Anand Kumar, Padmanabhan Tv
Interdisciplinary prosthodontics goes beyond our imagination into fields that have a direct effect on our total body health and quality of life. Removal of an eye has a detrimental effect on the psychology of the patient. Enucleation involves removal of the eyeball proper and leads to an enophthalmic socket with a shrunken eye, which has a crippling effect on patient's emotional and social life. Custom-made eye prosthesis simulates the characteristics of the companion eye and helps in restoring the normal facial appearance...
February 16, 2018: Curēus
https://www.readbyqxmd.com/read/29643789/alternating-hypotropia-with-pseudoptosis-a-new-phenotype-of-congenital-cranial-dysinnervation-disorder
#17
Fady Sedarous, Toby Y B Chan, Inas Makar
Congenital cranial dysinnervation disorders, also known as CCDDs, are characterized by aberrant innervation to extraocular and facial muscles resulting in unusual forms of incomitant strabismus. Anomalous innervation to extraocular muscles can result in a wide variety of phenotypes causing various clinical conditions such as Duane syndrome, congenital fibrosis of the extraocular muscles, and Möbius syndrome. We report a case of bilateral dysinnervation disorder causing atypical ocular movements in both eyes as the patient changes fixation from one eye to the other and from right gaze to left gaze that fits with the wider diagnosis of CCDDs...
January 2018: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29625811/further-characterization-of-capos-caos-syndrome-with-the-glu818lys-mutation-in-the-atp1a3-gene-a-case-report
#18
Takuya Hayashida, Yoshiaki Saito, Atsushi Ishii, Shinichi Hirose, Rika Hiraiwa, Yoshihiro Maegaki, Kousaku Ohno
A 38-year-old female patient experienced recurrent episodes of neurological deterioration during febrile illness at the age of 7 and 8 months, and 2, 4, and 37 years. Acute symptoms comprised unconsciousness, headache, abnormal ocular movements, flaccid paralysis with areflexia, ataxia, dysphagia, and movement disorders. Each episode of neurological deterioration was followed by partial recovery with residual symptoms of progressive disturbance of visual acuity with optic atrophy and hearing loss, moderate intellectual disability, strabismus, ophthalmoplegia, as well as fluctuating degree of gait ataxia, chorea, tremor, and myoclonus...
April 3, 2018: Brain & Development
https://www.readbyqxmd.com/read/29625080/the-effects-of-age-on-mitochondria-axonal-transport-and-axonal-degeneration-after-chronic-iop-elevation-using-a-murine-ocular-explant-model
#19
Elizabeth C Kimball, Joan L Jefferys, Mary E Pease, Ericka N Oglesby, Cathy Nguyen, Julie Schaub, Ian Pitha, Harry A Quigley
The purpose of this study was to compare younger and older mice after chronic intraocular pressure (IOP) elevation lasting up to 4 days with respect to mitochondrial density, structure, and movement, as well as axonal integrity, in an ex vivo explant model. We studied 2 transgenic mouse strains, both on a C57BL/6J background, one expressing yellow fluorescent protein (YFP) in selected axons and one expressing cyan fluorescent protein (CFP) in all mitochondria. Mice of 4 months or 14 months of age were exposed to chronic IOP by anterior chamber microbead injection for 14 h, 1, 3, or 4 days...
April 3, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29621384/binocular-summation-for-reflexive-eye-movements
#20
Christian Quaia, Lance M Optican, Bruce G Cumming
Psychophysical studies and our own subjective experience suggest that, in natural viewing conditions (i.e., at medium to high contrasts), monocularly and binocularly viewed scenes appear very similar, with the exception of the improved depth perception provided by stereopsis. This phenomenon is usually described as a lack of binocular summation. We show here that there is an exception to this rule: Ocular following eye movements induced by the sudden motion of a large stimulus, which we recorded from three human subjects, are much larger when both eyes see the moving stimulus, than when only one eye does...
April 1, 2018: Journal of Vision
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