Ciliary body thickness increases with increasing axial myopia

Am J Ophthalmol. 2005 Aug;140(2):324-5. doi: 10.1016/j.ajo.2005.01.047.

Abstract

Purpose: To assess the relationship between ciliary body thickness and refractive error.

Design: Prospective observational case series.

Methods: We enrolled 75 eyes of 75 patients with no history of intraocular surgery or use of anti-glaucoma medication. Axial length was measured by A-scan ultrasonography. Ciliary body thickness (CBT) was measured by two masked observers on radial-section images of the temporal corneoscleral limbus, acquired with ultrasound biomicroscopy (UBM) at 2 and 3 mm posterior to the scleral spur (CBT2 and CBT3, respectively).

Results: Refractive error was inversely correlated with CBT2 and CBT3 (r = -.64 and r = -.52, P < .0001, respectively). Axial length was correlated with CBT (r = .66 and r = .57, P < .0001, for CBT2 and CBT3, respectively).

Conclusion: CBT increases with increasing myopia and axial length.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Body Weights and Measures
  • Ciliary Body / diagnostic imaging
  • Ciliary Body / pathology*
  • Female
  • Humans
  • Male
  • Microscopy, Acoustic
  • Middle Aged
  • Myopia / physiopathology*
  • Prospective Studies