Pseudo-Gaze Deviation Resulting From Positive Angle Kappa and Esotropia

J Neuroophthalmol. 2021 Jun 1;41(2):e234-e236. doi: 10.1097/WNO.0000000000001068.

Abstract

A 6-year-old boy was referred for constant right gaze deviation. Rather than a gaze deviation, he constantly seemed to look on the left side of any displayed target. Examination revealed the association of a highly positive angle Kappa and an esotropia of equal values. He also exhibited signs of ocular albinism with no associated infantile nystagmus syndrome. The X-linked ocular albinism was confirmed genetically, explaining the presence of a positive angle Kappa. A highly positive angle Kappa can be associated with a convergent strabismus; in case both values offset each other, this can result in a constant "sidelooking," which should not be confused with a gaze deviation.

Publication types

  • Case Reports

MeSH terms

  • Albinism, Ocular / complications*
  • Albinism, Ocular / diagnosis
  • Child
  • Diagnostic Techniques, Ophthalmological
  • Esotropia / diagnosis
  • Esotropia / etiology*
  • Esotropia / physiopathology
  • Humans
  • Male
  • Nystagmus, Congenital / complications*
  • Nystagmus, Congenital / diagnosis
  • Nystagmus, Congenital / physiopathology
  • Oculomotor Muscles / physiopathology*