Original articleOptic Disc Torsion Presenting as Unilateral Glaucomatous-Appearing Visual Field Defect in Young Myopic Korean Eyes
Section snippets
Patients
The medical records of patients who visited the outpatient glaucoma clinic of the Asan Medical Center in Seoul, Korea, from March 2012 through February 2013 were reviewed retrospectively. This study was approved by the Asan Medical Center Institutional Review Board and adhered to the Declaration of Helsinki. All study subjects underwent ophthalmologic examinations that included manual refraction, Goldmann applanation tonometry, VF testing (Humphrey Field Analyzer; Carl Zeiss Meditec, Dublin,
Results
Thirty-nine patients who met the inclusion criteria were analyzed (mean age, 36.0±6.52 years; 20 women; all Koreans). Among these cases, 19 eyes (48.7%) had unilateral glaucomatous-appearing VF defects in the right eye and 20 (51.2%) had unilateral glaucomatous-appearing VF defects in the left eye. The VF-affected eyes had significantly lower VF MDs and higher pattern standard deviations (−7.25±3.79 dB and 10.10±4.14 dB, respectively) than the contralateral normal eyes (−1.85±1.79 dB and
Discussion
Axial myopia has been identified as a risk factor for OAG in many population-based studies.11, 12, 13, 14 Myopic eyes with an increased AL may have a greater deformability of the lamina cribrosa and higher scleral tension across the lamina than emmetropic eyes or eyes with a shorter AL.23, 24, 25, 26 This may contribute to a higher susceptibility to OAG in these myopic eyes, even when the IOP is the same as that of the emmetropic eye. However, we often encounter cases in our clinic where
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Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article.