Eye Health and MSA
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Treacher Collins Prize Essay the Significance of Nystagmus
Eye (1989) 3, 816--832 Treacher Collins Prize Essay The Significance of Nystagmus NICHOLAS EVANS Norwich Introduction combined. The range of forms it takes, and Ophthalmology found the term v!to"[<xy!too, the circumstances in which it occurs, must be like many others, in classical Greece, where it compared and contrasted in order to under described the head-nodding of the wined and stand the relationships between nystagmus of somnolent. It first acquired a neuro-ophthal different aetiologies. An approach which is mological sense in 1822, when it was used by synthetic as well as analytic identifies those Goodl to describe 'habitual squinting'. Since features which are common to different types then its meaning has been refined, and much and those that are distinctive, and helps has been learned about the circumstances in describe the relationship between eye move which the eye oscillates, the components of ment and vision in nystagmus. nystagmus, and its neurophysiological, Nystagmus is not properly a disorder of eye neuroanatomic and neuropathological corre movement, but one of steady fixation, in lates. It occurs physiologically and pathologi which the relationship between eye and field cally, alone or in conjunction with visual or is unstable. The essential significance of all central nervous system pathology. It takes a types of nystagmus is the disturbance in this variety of different forms, the eyes moving relationship between the sensory and motor about one or more axis, and may be conjugate ends of the visual-oculomotor axis. Optimal or dysjugate. It can be modified to a variable visual performance requires stability of the degree by external (visual, gravitational and image on the retina, and vision is inevitably rotational) and internal (level of awareness affected by nystagmus. -
Blepharospasm with Elevated Anti-Acetylcholine Receptor Antibody Titer
https://doi.org/10.1590/0004-282X20180076 ARTICLE Blepharospasm with elevated anti-acetylcholine receptor antibody titer Blefaroespasmo com título elevado de anticorpos antirreceptores de acetilcolina Min Tang1, Wu Li2, Ping Liu1, Fangping He1, Fang Ji1, Fanxia Meng1 ABSTRACT Objective: To determine whether serum levels of anti-acetylcholine receptor antibody (anti-AChR-Abs) are related to clinical parameters of blepharospasm (BSP). Methods: Eighty-three adults with BSP, 60 outpatients with hemifacial spasm (HFS) and 58 controls were recruited. Personal history, demographic factors, response to botulinum toxin type A (BoNT-A) and other neurological conditions were recorded. Anti- AChR-Abs levels were quantified using an enzyme-linked immunosorbent assay. Results: The anti-AChR Abs levels were 0.237 ± 0.022 optical density units in the BSP group, which was significantly different from the HFS group (0.160 ± 0.064) and control group (0.126 ± 0.038). The anti-AChR Abs level was correlated with age and the duration of response to the BoNT-A injection. Conclusion: Patients with BSP had an elevated anti-AChR Abs titer, which suggests that dysimmunity plays a role in the onset of BSP. An increased anti-AChR Abs titer may be a predictor for poor response to BoNT-A in BSP. Keywords: Blepharospasm, hemifacial spasm, botulinum toxin type A. RESUMO Objetivo: Determinar se os níveis séricos do anticorpo antirreceptor de acetilcolina (anti-AChR-Abs) estão relacionados aos parâmetros clínicos do blefaroespasmo (BSP). Métodos: Fora recrutados 83 adultos com BSP, 60 pacientes ambulatoriais com espasmo hemifacial (HFS) e 58 controles. Foi aplicado um questionário para registrar história pessoal, fatores demográficos, resposta à toxina botulínica tipo A (BoNT-A) e outras condições neurológicas. -
"Nystagmus Testing in Intoxicated Individuals," Citek
ISSUE HIGHLIGHT Nystagmus testing in intoxicated individuals Karl Citek, O.D., Ph.D.,a Bret Ball, O.D.,a and Dale A. Rutledge, Lieutenantb aCollege of Optometry, Pacific University, Forest Grove, Oregon and bthe Oregon State Police, Wilsonville, Oregon Background: Law enforcement officers routinely conduct psy- n the United States, drivers impaired* by alcohol and/or chophysical tests to determine if an impaired driver may be drugs are responsible for more than 16,000 deaths, one intoxicated or in need of medical assistance. Testing includes million injuries, and $45 billion in costs annually.1 As assessment of eye movements, using the Horizontal Gaze Nys- I tagmus (HGN) and Vertical Gaze Nystagmus (VGN) tests, which part of the attempt to reduce these human and economic are conducted at roadside by patrol officers. These tests pre- tolls, law enforcement officers routinely conduct tests of eye viously have been validated when the subject is placed in a movements to determine if a driver is under the influence standing posture with head upright. However, certain condi- of alcohol or other drugs. Alcohol, other central nervous sys- tions require that the subject be tested while seated or supine. Under these conditions, Positional Alcohol Nystagmus (PAN) tem (CNS)-depressant drugs, inhalants, and phencyclidine could be induced and mistaken for HGN or VGN. (PCP) and its analogs will affect the neural centers in the Methods: The study was conducted at law enforcement train- brainstem and cerebellum, which control eye movements, ing academy alcohol workshops in the Pacific Northwest. as well as other motor, sensory, and cognitive integration Ninety-six volunteer drinkers were tested when sober and areas of the brain. -
Effective Treatment of Neurological Symptoms with Normal Doses of Botulinum Neurotoxin in Wilson's Disease
toxins Communication Effective Treatment of Neurological Symptoms with Normal Doses of Botulinum Neurotoxin in Wilson’s Disease: Six Cases and Literature Review Harald Hefter and Sara Samadzadeh * Department of Neurology, University Hospital of Düsseldorf, Moorenstrasse 5, D-40225 Düsseldorf, Germany; [email protected] * Correspondence: [email protected]; Tel.: +49-211-811-7025; Fax: 49-211-810-4903 Abstract: Recent cell-based and animal experiments have demonstrated an effective reduction in botulinum neurotoxin A (BoNT/A) by copper. Aim: We aimed to analyze whether the successful symptomatic BoNT/A treatment of patients with Wilson’s disease (WD) corresponds with unusually high doses per session. Among the 156 WD patients regularly seen at the outpatient department of the university hospital in Düsseldorf (Germany), only 6 patients had been treated with BoNT/A during the past 5 years. The laboratory findings, indications for BoNT treatment, preparations, and doses per session were extracted retrospectively from the charts. These parameters were compared with those of 13 other patients described in the literature. BoNT/A injection therapy is a rare (<4%) symptomatic treatment in WD, only necessary in exceptional cases, and is often applied only transiently. In those cases for which dose information was available, the dose per session and indication appear to be within usual limits. Despite the evidence that copper can interfere with the botulinum toxin in preclinical models, patients with WD do not require higher doses of the toxin than other patients with dystonia. Keywords: Citation: Hefter, H.; Samadzadeh, S. Wilson’s disease; neurological symptoms; botulinum neurotoxin type A; dose adjustment; Effective Treatment of Neurological reduced compliance Symptoms with Normal Doses of Botulinum Neurotoxin in Wilson’s Key Contribution: There is no need for high doses of botulinum neurotoxin in the symptomatic Disease: Six Cases and Literature treatment of Wilson’s disease. -
Complex Strabismus and Syndromes
Complex Strabismus & Syndromes Some patients exhibit complex combinations of vertical, horizontal, and torsional strabismus. Dr. Shin treats patients with complex strabismus arising from, but not limited to, thyroid-related eye disease, stroke, or brain tumors as well as strabismic disorders following severe orbital and head trauma. The following paragraphs describe specific ocular conditions marked by complex strabismus. Duane Syndrome Duane syndrome represents a constellation of eye findings present at birth that results from an absent 6th cranial nerve nucleus and an aberrant branch of the 3rd cranial nerve that innervates the lateral rectus muscle. Duane syndrome most commonly affects the left eye of otherwise healthy females. Duane syndrome includes several variants of eye movement abnormalities. In the most common variant, Type I, the eye is unable to turn outward to varying degrees from the normal straight ahead position. In addition, when the patient tries to look straight ahead, the eyes may cross. This may lead a person with Duane syndrome to turn his/her head toward one side while viewing objects in front of them in order to better align the eyes. When the involved eye moves toward the nose, the eye retracts slightly back into the eye socket causing a narrowing of the opening between the eyelids. In Type II, the affected eye possesses limited ability to turn inward and is generally outwardly turning. In Type III, the eye has limited inward and outward movement. All three types are characterized by anomalous co-contraction of the medial and lateral rectus muscles, so when the involved eye moves towards the nose, the globe pulls back into the orbit and the vertical space between the eyelids narrows. -
Trifluperazine Induced Blepharospasm – a Missed Diagnosis
Case Report Annals of Clinical Case Reports Published: 24 Aug, 2016 Trifluperazine Induced Blepharospasm – A Missed Diagnosis Sood T1*, Tomar M2, Sharma A2 and Ravinder G3 1Department of Ophthalmology, Civil Hospital Sarkaghat, India 2Department of Ophthalmology, Indira Gandhi Medical College, India 3Department of Dermatology, Zonal Hospital Bilaspur, India Abstract Tardive dystonia is a class of “tardive” movement disorder caused by antipsychotics and is specified by reflex muscle contraction, which may be tonic, spasmodic, patterned, or repetitive. This neurological disorder most commonly occurs as the repercussion of long-term or high-dose use of antipsychotic drugs. Tardive dyskinesia uncommonly inculpates the muscles of eye closure. Blepharospasm is a kind of focal tardive dystonia distinguished by persistent intermittent or persistent closure of the eyelids. Blepharospasm is an uncommon, persistently disabling medical condition rendering patient functionally blind and occupationally handicapped .We hereby tend to report a case of trifluoperazine induced tardive blepharospasm. Case Presentation A 46-year male patient reported to eye opd with complaint of progressive difficulty in opening his eyes for last two years .On examination he was unable to open his eyes voluntarily, sometimes thrusting his head backwards or rubbing his brow with his fingers during these episodes. Past and family history revealed no psychiatric or neurological illness. No past history of any other psychiatric/medical/surgical illness could be elicited. On specifically asking about medication history, he gave history of trifluoperazine intake. Patient was diagnosed with schizophreniform disorder 3 years back and was on treatment since then. Initially, he was started with 5mg trifluoperazine in twice daily dosage which had to be increased to (15mg/day) within a month. -
Sixth Nerve Palsy
COMPREHENSIVE OPHTHALMOLOGY UPDATE VOLUME 7, NUMBER 5 SEPTEMBER-OCTOBER 2006 CLINICAL PRACTICE Sixth Nerve Palsy THOMAS J. O’DONNELL, MD, AND EDWARD G. BUCKLEY, MD Abstract. The diagnosis and etiologies of sixth cranial nerve palsies are reviewed along with non- surgical and surgical treatment approaches. Surgical options depend on the function of the paretic muscle, the field of greatest symptoms, and the likelihood of inducing diplopia in additional fields by a given procedure. (Comp Ophthalmol Update 7: xx-xx, 2006) Key words. botulinum toxin (Botox®) • etiology • sixth nerve palsy (paresis) Introduction of the cases, the patients had hypertension and/or, less frequently, Sixth cranial nerve (abducens) palsy diabetes; 26% were undetermined, is a common cause of acquired 5% had a neoplasm, and 2% had an horizontal diplopia. Signs pointing aneurysm. It was noted that patients toward the diagnosis are an who had an aneurysm or neoplasm abduction deficit and an esotropia had additional neurologic signs or increasing with gaze toward the side symptoms or were known to have a of the deficit (Figure 1). The diplopia cancer.2 is typically worse at distance. Measurements are made with the Anatomical Considerations uninvolved eye fixing (primary deviation), and will be larger with the The sixth cranial nerve nuclei are involved eye fixing (secondary located in the lower pons beneath the deviation). A small vertical deficit may fourth ventricle. The nerve on each accompany a sixth nerve palsy, but a side exits from the ventral surface of deviation over 4 prism diopters the pons. It passes from the posterior Dr. O’Donnell is affiliated with the should raise the question of cranial fossa to the middle cranial University of Tennessee Health Sci- additional pathology, such as a fourth fossa, ascends the clivus, and passes ence Center, Memphis, TN. -
Albinism Terminology
Albinism Terminology Oculocutaneous Albinism (OCA): Oculocutaneous (pronounced ock-you-low-kew- TAIN-ee-us) Albinism is an inherited genetic condition characterized by the lack of or diminished pigment in the hair, skin, and eyes. Implications of this condition include eye and skin sensitivities to light and visual impairment. Ocular Albinism (OA): Ocular Albinism is an inherited genetic condition, diagnosed predominantly in males, characterized by the lack of pigment in the eyes. Implications of this condition include eye sensitivities to light and visual impairment. Hermansky Pudlak Syndrome (HPS): Hermansky-Pudlak Syndrome is a type of albinism which includes a bleeding tendency and lung disease. HPS may also include inflammatory bowel disease or kidney disease. The severity of these problems varies much from person to person, and the condition can be difficult to diagnose with traditional blood tests Chediak Higashi Syndrome: Chediak Higashi Syndrome is a type of albinism in which the immune system is affected. Illnesses and infections are common from infancy and can be severe. Issues also arise with blood clotting and severe bleeding. Melanin: Melanin is pigment found in a group of cells called melanocytes in most organisms. In albinism, the production of melanin is impaired or completely lacking. Nystagmus: Nystagmus is an involuntary movement of the eyes in either a vertical, horizontal, pendular, or circular pattern caused by a problem with the visual pathway from the eye to the brain. As a result, both eyes are unable to hold steady on objects being viewed. Nystagmus may be accompanied by unusual head positions and head nodding in an attempt to compensate for the condition. -
Abnormal Eye Movements in Three Types of Chorea
DOI: 10.1590/0004-282X20160109 VIEW AND REVIEW Abnormal eye movements in three types of chorea Anormalidades dos movimentos oculares em três tipos de coreia Tiago Attoni1, Rogério Beato2, Serge Pinto3, Francisco Cardoso2 ABSTRACT Chorea is an abnormal movement characterized by a continuous flow of random muscle contractions. This phenomenon has several causes, such as infectious and degenerative processes. Chorea results from basal ganglia dysfunction. As the control of the eye movements is related to the basal ganglia, it is expected, therefore, that is altered in diseases related to chorea. Sydenham’s chorea, Huntington’s disease and neuroacanthocytosis are described in this review as basal ganglia illnesses that can present with abnormal eye movements. Ocular changes resulting from dysfunction of the basal ganglia are apparent in saccade tasks, slow pursuit, setting a target and anti-saccade tasks. The purpose of this article is to review the main characteristics of eye motion in these three forms of chorea. Keywords: chorea; eye movements; Huntington disease; neuroacanthocytosis. RESUMO Coreia é um movimento anormal caracterizado pelo fluxo contínuo de contrações musculares ao acaso. Este fenômeno possui variadas causas, como processos infecciosos e degenerativos. A coreia resulta de disfunção dos núcleos da base, os quais estão envolvidos no controle da motricidade ocular. É esperado, então, que esta esteja alterada em doenças com coreia. A coreia de Sydenham, a doença de Huntington e a neuroacantocitose são apresentadas como modelos que têm por característica este distúrbio do movimento, por ocorrência de processos que acometem os núcleos da base. As alterações oculares decorrentes de disfunção dos núcleos da base se manifestam em tarefas de sacadas, perseguição lenta, fixação de um alvo e em tarefas de antissacadas. -
Expanding the Phenotypic Spectrum of PAX6 Mutations: from Congenital Cataracts to Nystagmus
G C A T T A C G G C A T genes Article Expanding the Phenotypic Spectrum of PAX6 Mutations: From Congenital Cataracts to Nystagmus Maria Nieves-Moreno 1,* , Susana Noval 1 , Jesus Peralta 1, María Palomares-Bralo 2 , Angela del Pozo 3 , Sixto Garcia-Miñaur 4, Fernando Santos-Simarro 4 and Elena Vallespin 5 1 Department of Ophthalmology, Hospital Universitario La Paz, 28046 Madrid, Spain; [email protected] (S.N.); [email protected] (J.P.) 2 Department of Molecular Developmental Disorders, Medical and Molecular Genetics Institue (INGEMM) IdiPaz, CIBERER, Hospital Universitario La Paz, 28046 Madrid, Spain; [email protected] 3 Department of Bioinformatics, Medical and Molecular Genetics Institue (INGEMM) IdiPaz, CIBERER, Hospital Universitario La Paz, 28046 Madrid, Spain; [email protected] 4 Department of Clinical Genetics, Medical and Molecular Genetics Institue (INGEMM) IdiPaz, CIBERER, Hospital Universitario La Paz, 28046 Madrid, Spain; [email protected] (S.G.-M.); [email protected] (F.S.-S.) 5 Department of Molecular Ophthalmology, Medical and Molecular Genetics Institue (INGEMM) IdiPaz, CIBERER, Hospital Universitario La Paz, 28046 Madrid, Spain; [email protected] * Correspondence: [email protected] Abstract: Background: Congenital aniridia is a complex ocular disorder, usually associated with severe visual impairment, generally caused by mutations on the PAX6 gene. The clinical phenotype of PAX6 mutations is highly variable, making the genotype–phenotype correlations difficult to establish. Methods: we describe the phenotype of eight patients from seven unrelated families Citation: Nieves-Moreno, M.; Noval, with confirmed mutations in PAX6, and very different clinical manifestations. -
Retinitis Pigmentosa, Ataxia, and Peripheral Neuropathy
J Neurol Neurosurg Psychiatry: first published as 10.1136/jnnp.46.3.206 on 1 March 1983. Downloaded from Journal of Neurology, Neurosurgery, and Psychiatry 1983;46:206-213 Retinitis pigmentosa, ataxia, and peripheral neuropathy RR TUCK, JG McLEOD From the Department ofMedicine, University ofSydney, Australia SUMMARY The clinical features of four patients with retinitis pigmentosa, ataxia and peripheral neuropathy but with no increase in serum phytanic acid are reported. Three patients also had sensorineural deafness and radiological evidence of cerebellar atrophy. Nerve conduction studies revealed abnormalities of sensory conduction and normal or only mild slowing of motor conduc- tion velocity. Sural nerve biopsy demonstrated a reduction in the density of myelinated fibres. There were no onion bulb formations. These cases clinically resemble Refsum's disease, but differ in having no detectable biochemical abnormality, and a peripheral neuropathy which is not hypertrophic in type. They may represent unusual cases of spinocerebellar degeneration. Retinitis pigmentosa occurs infrequently as an iso- (WAIS). He had a speech impediment but was not dysar- Protected by copyright. lated finding in otherwise healthy individuals and thric. He was of short stature, had a small head and pes families. Its association with deafness, with or with- cavus but no kyphoscoliosis. His visual acuity in the right eye was 6/60 while in the left he could count fingers only. out other neurological abnormalities is much less The right visual field was constricted but the left could not common but nevertheless well recognised.1 In be tested. The optic discs were pale, the retinal vessels heredopathia atactica polyneuritiformis (Refsum's small in diameter and throughout the retinae there was disease), abetalipoproteinaemia, and the Keams- scattered "bone corpuscle" pigmentation. -
Management of Symptomatic Latent Nystagmus
MANAGEMENT OF SYMPTOMATIC LATENT NYSTAGMUS CHRISTOPHER LIUI, MICHAEL GRESTy2 and JOHN LEEI London SUMMARY hood squint2,3,6,7 and dissociated vertical deviation Most patients with latent nystagmus are asymptomatic (DVD).8 It is a benign condition and is not associated with and do not require treatment. We discuss the manage neurological diseases.2 Under most circumstances, the ment by botulinum toxin injection and surgery of five demonstration of latent nystagmus is of trivial importance cases of latent nystagmus in which the patients suffered and the majority of patients are asymptomatic. The main loss of visual acuity on certain manoeuvres as a con reported problem with latent nystagmus is in the assess 9 sequence of an exacerbation of the nystagmus amplitude. ment of monocular visual acuity, especially in children The importance of eye movement recordings for accurate with strabismus.lO,ll A further variety of latent nystagmus diagnosis is stressed and the investigative role of bot may be encountered in which the direction of nystagmus ulinum toxin injection is discussed. Extraocular muscle beat is independent of the laterality of covering. In our surgery is helpful in some cases of symptomatic latent experience patients with this variety are rare and on analy· nystagmus. sis have turned out to be cases of congenital nystagmuses. They are not accompanied by strabismus. The term 'latent nystagmus' is commonly used in clinical We report five patients with latent nystagmus all of practice to refer to a nystagmus which appears or mark whom had problems directly related to their nystagmus. edly enhances when one or other eye is covered.