Table 1.
Patient characteristics in the asymmetric and symmetric groups.
Table 2.
Intereye comparison of ocular parameters in the asymmetric and symmetric groups.
Table 3.
Correlation analysis between parameters in myopic and nonmyopic asymmetric group.
Table 4.
Multivariate analysis of intereye comparisons in the myopic and nonmyopic asymmetric group.
Fig 1.
Representative cases from the asymmetric myopic, nonmyopic, and symmetric normal tension glaucoma groups.
(A) A 74-year-old male patient with refractive error of +1.25 D = -1.75 D x 90° and +1.25 D = -1.25 D x 90° on the right and the left eye, respectively. Visual field test results showed MD of -8.68 and -0.99 dB, for the right eye and the left eye, respectively. The baseline untreated IOPs were 17 and 14 mmHg, respectively. The ovality indices were similar between the worse eye and the better eye (1.057 and 1.087, respectively). The worse eye demonstrated a slightly larger PPA/disc area ratio than the better eye (0.487 and 0.397, respectively). (B) A 42-year-old male patient with asymmetric myopia of -7.25 diopters (D) = -0.75 D x 180° and -5.75 D = -0.25 D x 90° on the right and the left eye, respectively. The baseline untreated intraocular pressures (IOPs) were 16 and 15 mmHg, respectively. Visual field test results showed mean deviation (MD) of -13.68 dB and -2.90 dB, for the right eye and the left eye, respectively. The ovality index was larger in the worse eye than in the better eye (1.365 and 1.120, respectively). Also, the worse eye showed a larger peripapillary area (PPA)/disc area ratio than the better eye (1.591 and 0.969, respectively). (C) A 59-year-old male patient with visual field defects of similar severity (MD -17.24 dB and -16.49 dB, respectively). The refractive errors were -0.25 D = -2.0 D x 180° and -0.25 D = -1.5 D x 180° for the right and the left eye, respectively. The baseline untreated IOPs were 17 and 16 mmHg, respectively. The ovality indices (1.038 and 1.027) and PPA/disc area ratios (0.304 and 0.396) were similar between the two eyes.