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. 2020 Aug;98(5):506-513.
doi: 10.1111/aos.14354. Epub 2020 Feb 17.

Prevalence and causes of infantile nystagmus in a large population-based Danish cohort

Karen Hvid  1 , Kamilla Rothe Nissen  1 , Allan Bayat  2   3 , Laura Roos  4 , Karen Grønskov  4 , Line Kessel  1   5
Affiliations
Free article

Prevalence and causes of infantile nystagmus in a large population-based Danish cohort

Karen Hvid et al. Acta Ophthalmol. 2020 Aug.
Free article

Abstract

Purpose: The aim of this study was to provide a population-based estimate on the prevalence of infantile nystagmus and to describe the causes in the Capital Region of Denmark.

Methods: Review of medical records of children with infantile nystagmus born in the period 1 January 2010 through 31 December 2017 and living in the Capital Region of Denmark. We used birth registry data from Statistics Denmark and the National Danish Birth Registry to calculate the prevalence of nystagmus in children born at term and prematurely.

Results: A total of 103 patients (52 males/51 females) with infantile nystagmus were included. The overall prevalence of infantile nystagmus was 6.1 per 10 000 live births. It was higher in premature children (28.4/10 000 live births) than children born at term (4.4/10 000), p < 0.0001, and highest in children born extremely preterm, (97.3/10 000). The most common cause of infantile nystagmus was ocular disease (44%) followed by idiopathic nystagmus (32%), neurological disorders and genetic syndromes (20%) and prematurity without retinopathy of prematurity as the only cause (4%).

Conclusions: In this study, we provide the prevalence of infantile nystagmus based on national medical records in which all residents are accounted for. Our findings show a prevalence of 6.1 per 10 000 live births but six times higher among children born preterm than born at term. Ocular disease was the leading cause of infantile nystagmus with albinism and ocular malformations as the most frequent. In 1/3 of patients, no cause could be identified.

Keywords: albinism; congenital nystagmus; idiopathic infantile nystagmus; infantile nystagmus; paediatric ophthalmology.

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