| The Angle Kappa in Dominant and Non-Dominant Eye. |
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Hong Kyu Kim, Kyong Jin Cho |
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Department of Ophthalmology, Dankook University College of Medicine, Cheonan, Korea. perfectcure@hanmail.net |
| 우세안과 비우세안에서 카파각의 비교 |
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김홍규⋅조경진 |
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단국대학교 의과대학 안과학교실 |
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| Abstract |
PURPOSE
To evaluate differences between dominant and non-dominant eyes by analyzing angle kappa in dominant and non-dominant eyes. METHODS: Fifty-seven subjects who had best corrected visual acuity 20/20 in the better-seeing eye and no underlying ocular disease were recruited. Ocular dominance was determined using the hole-in-the-card test. Corneal topography, refractive error, intraocular pressure (IOP), and axial length were evaluated in both eyes. RESULTS: On corneal topography examination, the angle kappa and white-to-white measurements were significantly smaller in the dominant eye than the non-dominant eye (p = 0.013 and p = 0.045, respectively). However, no significant differences in sim K's' astigmatism (p = 0.210), central corneal thickness (p = 0.533), and anterior chamber depth (p = 0.216) were observed. In addition, cylindrical powers of the subjects measured by autorefraction (AR) were significantly lower in the dominant eye (p = 0.026); however no differences in spherical equivalent measured by AR (p = 0.061), IOP measured using pneumonic tonometer (p = 0.536), or axial length measured using laser biometry (p = 0.093) were observed. CONCLUSIONS: In this study, we found the angle kappa a new factor in determining the dominant and non-dominant eye. Difference in axial length and spherical equivalent between dominant and non-dominant eye may be associated with the difference in angle kappa. |
| Key Words:
Angle kappa;Cylindrical power;Dominant eye;Non-dominant eye;White-to-white distance |
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