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Erroneous and Misleading Terminology Based on Misinterpretation of David Cogan's Observations

Louis F. Dell’Osso, PhD; Richard W. Hertle, MD; Robert B. Daroff, MD

Arch Ophthalmol. 2007;125(11):1559-1561.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

INTRODUCTION

Most patients with infantile nystagmus syndrome (INS)¹ (formerly known as congenital nystagmus) exhibit nystagmus with several of the waveforms first identified in 1975.² The past 45 years of recording and analyzing nystagmus waveforms have repeatedly demonstrated that most INS waveforms result from the same deficit in one of the several ocular motor subsystems, specifically smooth pursuit.^3-6 This applies to all patients with INS whether they have associated visual sensory deficits, are familially predisposed to have INS (ie, there is a true genetic anomaly), or exhibit INS without an associated ocular or central nervous system deficit (so-called idiopathic). Despite this eye-movement data, textbooks in ophthalmology, neuro-ophthalmology, and neurology as well as current peer-reviewed literature continue to use the terms sensory and motor nystagmus to describe the ocular oscillations of INS. Those descriptions imply not only that there are . . . [Full Text of this Article]

THE PROBLEM

THE DATA

Cogan’s Article

Cogan’s Note

COMMENT

AUTHOR INFORMATION

Author Affiliations: Daroff-Dell’Osso Ocular Motility Laboratory, Louis Stokes Cleveland Department of Veterans Affairs Medical Center and CASE Medical School (Drs Dell’Osso and Daroff), and the Departments of Neurology (Drs Dell’Osso and Daroff) and Biomedical Engineering (Dr Dell’Osso), Case Western Reserve University and University Hospitals Case Medical Center, Cleveland, Ohio; and University of Pittsburgh Medical Center Eye Center, The Children's Hospital of Pittsburgh, and Departments of Ophthalmology and Bioengineering, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (Dr Hertle).

RELATED LETTERS

Practical Classification of Nystagmus in the Clinic
Mark J. Kupersmith
Arch Ophthalmol. 2008;126(6):871-872.
EXTRACT | FULL TEXT  

Practical Classification of Nystagmus in the Clinic—Reply
Louis F. Dell’Osso, Richard W. Hertle, and Robert B. Daroff
Arch Ophthalmol. 2008;126(6):871-872.
EXTRACT | FULL TEXT  

THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES

Practical Classification of Nystagmus in the Clinic
Kupersmith
Arch Ophthalmol 2008;126:871-872.
FULL TEXT  

Practical Classification of Nystagmus in the Clinic--Reply
Dell'Osso et al.
Arch Ophthalmol 2008;126:871-872.
FULL TEXT