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Do the primary surgical options for basic-type exotropia cause differences in distance-near discrepancy of recurrent exotropia after surgery?

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  • Kwan Hyuk Cho
  • Jinsoo Kim
  • Dong Gyu Choi
  • Joo Yeon Lee

Abstract

Purpose: Most ophthalmologists appear to have no distinct preference between unilateral recess-resect (R&R) and bilateral lateral rectus (BLR) recessions to treat basic-type exotropia. This study aimed to determine whether differences in distance-near discrepancy and resultant exotropia types of recurrent exotropia following surgery for primary basic-type exotropia exist between the two surgical options. Methods: Ninety-three patients with recurrent exotropia following BLR recessions for basic-type exotropia (BLR group) and 95 following R&R for basic-type exotropia (R&R group) were included in this retrospective study. The exotropia types in recurrent exotropia were classified into three types according to distance-near discrepancy: basic, divergence-excess, and convergence-insufficiency. The BLR and R&R groups were compared. Results: After surgery for basic-type exotropia, the type composition changed differently in each group (p 0.05). Conclusions: Convergence-insufficiency type recurrent exotropia occurred more frequently after BLR recessions than after R&R for basic-type exotropia. The high rate of secondary convergence-insufficiency type exotropia after BLR recessions should be considered when clinicians select a surgical option to treat exotropia.

Suggested Citation

  • Kwan Hyuk Cho & Jinsoo Kim & Dong Gyu Choi & Joo Yeon Lee, 2019. "Do the primary surgical options for basic-type exotropia cause differences in distance-near discrepancy of recurrent exotropia after surgery?," PLOS ONE, Public Library of Science, vol. 14(8), pages 1-9, August.
    • Handle: RePEc:plo:pone00:0221268
    DOI: 10.1371/journal.pone.0221268
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