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Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS).

Publication ,  Journal Article
Felius, J; Busettini, C; Lynn, MJ; Hartmann, EE; Lambert, SR; Infant Aphakia Treatment Study Group,
Published in: Invest Ophthalmol Vis Sci
August 5, 2014

PURPOSE: To study eye movements in a large group of children after the removal of unilateral infantile cataract, and to compare fixation instabilities between treatment groups with or without IOL implantation. METHODS: The Infant Aphakia Treatment Study (IATS) is a randomized, multicenter clinical trial comparing IOL to contact lens (CL) treatment with a unilateral infantile cataract in participants who underwent cataract surgery at 1 to 6 months of age. At age 4.5 years, eye movements were recorded in 103 participants, using a high-speed video camera while the child performed a fixation task. The recordings were inspected by masked readers for the presence of fixation instabilities (nystagmus and saccadic oscillations). RESULTS: Overall, fixation instabilities were observed in 50 (60%) of 83 children who had evaluable recordings, with no differences between treatment groups (27 [64%] of 42 in the IOL group, 23 [56%] of 41 in the CL group; P = 0.51). Nystagmus was seen in 38% and saccadic oscillations in 31%, with no differences between treatment groups (P > 0.33). Children without a fixation instability had better visual acuity (P = 0.04). CONCLUSIONS: Nystagmus and saccadic oscillations are well-known consequences of infantile cataracts, presumably the result of visual deprivation during the critical period of visual development. After early cataract extraction, successful optical correction may reduce further form deprivation and minimize the incidence of these fixation instabilities. In this study, no differences in the presence of fixation instabilities were found between the two treatment strategies (CL or IOL) for optical correction after cataract removal. (ClinicalTrials.gov number, NCT00212134.).

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Published In

Invest Ophthalmol Vis Sci

DOI

EISSN

1552-5783

Publication Date

August 5, 2014

Volume

55

Issue

8

Start / End Page

5332 / 5337

Location

United States

Related Subject Headings

  • Videotape Recording
  • Ophthalmology & Optometry
  • Nystagmus, Pathologic
  • Male
  • Lenses, Intraocular
  • Humans
  • Fixation, Ocular
  • Female
  • Contact Lenses
  • Child, Preschool
 

Citation

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Felius, J., Busettini, C., Lynn, M. J., Hartmann, E. E., Lambert, S. R., & Infant Aphakia Treatment Study Group, . (2014). Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS). Invest Ophthalmol Vis Sci, 55(8), 5332–5337. https://doi.org/10.1167/iovs.14-14710
Felius, Joost, Claudio Busettini, Michael J. Lynn, E Eugenie Hartmann, Scott R. Lambert, and Scott R. Infant Aphakia Treatment Study Group. “Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS).Invest Ophthalmol Vis Sci 55, no. 8 (August 5, 2014): 5332–37. https://doi.org/10.1167/iovs.14-14710.
Felius J, Busettini C, Lynn MJ, Hartmann EE, Lambert SR, Infant Aphakia Treatment Study Group. Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS). Invest Ophthalmol Vis Sci. 2014 Aug 5;55(8):5332–7.
Felius, Joost, et al. “Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS).Invest Ophthalmol Vis Sci, vol. 55, no. 8, Aug. 2014, pp. 5332–37. Pubmed, doi:10.1167/iovs.14-14710.
Felius J, Busettini C, Lynn MJ, Hartmann EE, Lambert SR, Infant Aphakia Treatment Study Group. Nystagmus and related fixation instabilities following extraction of unilateral infantile cataract in the Infant Aphakia Treatment Study (IATS). Invest Ophthalmol Vis Sci. 2014 Aug 5;55(8):5332–5337.

Published In

Invest Ophthalmol Vis Sci

DOI

EISSN

1552-5783

Publication Date

August 5, 2014

Volume

55

Issue

8

Start / End Page

5332 / 5337

Location

United States

Related Subject Headings

  • Videotape Recording
  • Ophthalmology & Optometry
  • Nystagmus, Pathologic
  • Male
  • Lenses, Intraocular
  • Humans
  • Fixation, Ocular
  • Female
  • Contact Lenses
  • Child, Preschool