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X-Linked Idiopathic Infantile Nystagmus (XLIIN): Case Report and Review of Literature

  • Pediatric Ophthalmology (S Robbins, Section Editor)
  • Published:
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Abstract

Infantile nystagmus syndrome (INS) is one of the most common forms of nystagmus. It can occur in isolation or with other ocular anomalies. While nystagmus is usually sporadic, familial cases exist and are most commonly X-linked with incomplete penetrance and variable expressivity. There are over 45 mutations reported in the FRMD7 gene.

Purpose of Review

This review describes the possible underlying mechanisms of infantile nystagmus syndrome, clinical characterization, and principles of management including behavioral, refractive, pharmacological, and surgical options as well as determines the genetic basis of INS in one large Caucasian family with a novel mutation in FRMD7.

Recent Findings

Newer generation optical coherence tomography (OCT) allows for accurate phenotypical characterization of genetic subtypes of INS.

Summary

Further studies into identifying unknown genetic mutations involved in infantile nystagmus syndrome will allow for development of cellular and animal models to help classify INS and guide future therapies.

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Correspondence to Rohan Verma.

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Conflict of Interest

Rohan Verma, Hema Ramkumar, Kang Zhang, David Granet, and Richard Hertle declare no conflict of interest.

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This article does not contain any studies with human or animal subjects performed by any of the authors.

Source of Funding

Supported by the National Eye Institute (NEI) Vision Research Core Grant P30EY022589 and an unrestricted grant by Research to Prevent Blindness, New York, NY.

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This article is part of the Topical Collection on Pediatric Ophthalmology

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Verma, R., Ramkumar, H.L., Zhang, K. et al. X-Linked Idiopathic Infantile Nystagmus (XLIIN): Case Report and Review of Literature. Curr Ophthalmol Rep 5, 128–135 (2017). https://doi.org/10.1007/s40135-017-0139-y

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