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Text
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URL Address
<a href="http://doi.org/10.1136/bjophthalmol-2014-305915" target="_blank" rel="noreferrer noopener">http://doi.org/10.1136/bjophthalmol-2014-305915</a>
Pages
471–476
Issue
4
Volume
99
Dublin Core
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Title
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Topical brinzolamide (Azopt) versus placebo in the treatment of infantile nystagmus syndrome (INS).
Publisher
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The British journal of ophthalmology
Date
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2015
2015-04
Subject
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Administration; Adult; Aged; Binocular/physiology; Carbonic Anhydrase Inhibitors/*therapeutic use; Clinical Trial; Cross-Over Studies; Double-Blind Method; Female; Humans; Male; Middle Aged; Muscles; Nystagmus; Ophthalmic Solutions; Pathologic/*drug therapy/physiopathology; Prospective Studies; Sulfonamides/*therapeutic use; Thiazines/*therapeutic use; Topical; Treatment Medical; Vision; Visual Acuity/physiology
Creator
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Hertle Richard W; Yang Dongsheng; Adkinson Tonia; Reed Michael
Description
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PURPOSE: To test the hypothesis that the topical carbonic anhydrase inhibitor brinzolamide (Azopt) has beneficial effects versus placebo on measures of nystagmus and visual acuity in adult subjects with infantile nystagmus syndrome (INS). DESIGN: Prospective, cross-over, double masked clinical trial. METHODS: SETTING: Single centre. STUDY POPULATION: Five subjects \textgreater/=18 years old with typical INS and best-binocular visual acuity in their primary position null zone ETDRS 55 letters to 85 letters (20/200 to 20/50) and had no previous treatment for nystagmus. INTERVENTION: In a randomised order, each subject received one drop of Azopt or placebo in both eyes three times a day separated by a washout period of at least a week followed by Azopt or placebo in both eyes three times a day; thus each subject got the drug and placebo, each acting as his or her own control. OUTCOME MEASURES: The nystagmus acuity function and INS waveforms obtained from eye movement recordings, binocular optotype visual acuity, using the ETDRS protocol analysed individually and as a group before and after Azopt and placebo. RESULTS: Versus placebo and baseline measures, topical Azopt significantly improved; INS waveform characteristics in the primary position null zone, group mean values of the nystagmus acuity function across gaze (p\textless0.01) and group mean ETDRS binocular letter visual acuity (p\textless0.05). There was a predictable decrease in intraocular pressure (IOP) without any systemic or ocular adverse events. CONCLUSIONS: Although a prospective large-scale clinical trial is needed to prove effectiveness, an eye-drop-based therapy for INS may emerge as a viable addition to optical, surgical, behavioural and systemic drug therapies for INS. TRIAL REGISTRATION NUMBER: NCT01312402.
Identifier
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<a href="http://doi.org/10.1136/bjophthalmol-2014-305915" target="_blank" rel="noreferrer noopener">10.1136/bjophthalmol-2014-305915</a>
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Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
2015
Adkinson Tonia
Administration
Adult
Aged
Binocular/physiology
Carbonic Anhydrase Inhibitors/*therapeutic use
Clinical Trial
Cross-Over Studies
Double-Blind Method
Female
Hertle Richard W
Humans
Male
Middle Aged
Muscles
Nystagmus
Ophthalmic Solutions
Pathologic/*drug therapy/physiopathology
Prospective Studies
Reed Michael
Sulfonamides/*therapeutic use
The British journal of ophthalmology
Thiazines/*therapeutic use
Topical
Treatment Medical
Vision
Visual Acuity/physiology
Yang Dongsheng