우세안과 비우세안에서 카파각의 비교 = The Angle Kappa in Dominant and Non-Dominant Eye

국문 초록 (Abstract)

목적: 우세안과 비우세안을 결정하는 요인으로 각막지형도검사를 이용한 카파각의 차이에 대해 알아보기 위해 비교분석하였다.
대상과 방법: 교정시력 20/20 이상인 성인 57명을 대상으로 두 눈 시력교정 후, hole-in-the-card test의 방법을 사용하여 우세안을결정하였고, 각막형태검사, 자동굴절검사, 안압검사, 안축장길이측정 등을 시행하였다.
결과: 각막형태검사상 우세안이 비우세안에 비해서 카파각이 유의하게 작게 측정되었으며(p=0.013), 각막수평지름(white-to-white)도 유의하게 작게 측정되었다(p=0.045). 두 군 간 각막난시값의 차이가 없었고(p=0.210), 각막두께도 차이가 없었으며(p=0.533), 전방깊이도 차이를 보이지 않았다(p=0.216). 자동굴절검사상 우세안의 각막난시값이 유의하게 작게 측정되었지만(p=0.026), 구면대응치는 유의한 차이를 보이지 않았고(p=0.061), 안축장길이도 유의한 차이를 보이지 않았으며(p=0.093), 안압도 두 군 간 유의한 차이를 보이지 않았다(p=0.536).
결론: 우세안과 비우세안을 결정하는 새로운 요인으로 카파각 차이를 고려해 볼 수 있다. 우세안과 비우세안에 있어 안축장길이와구면대응치의 차이는 카파각 차이와 관련되어 있는 것으로 보인다.

다국어 초록 (Multilingual 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.

참고문헌 (Reference)

• 1 조경진, "우세안과 비우세안의 굴절이상" 대한안과학회 50 (50): 275-279, 2009
• 2 Mapp AP., "What does the dominant eye dominate? A brief and somewhat contentious review" 65 : 310-317, 2003
• 3 Chia A., "Ocular dominance, laterality, and refraction in Singaporean children" 48 : 3533-3536, 2007
• 4 Basmak H., "Measurement of angle kappa with synoptophore and Orbscan II in a normal population" 23 : 456-460, 2007
• 5 Samarawickrama C., "Macular thickness, retinal thickness, and optic disk parameters in dominant compared with nondominant eyes" 13 : 142-147, 2009
• 6 Koran Association of Pediatric Ophthalmology and Strabismus., "Current concepts in strabismus" Naewae haksool 146-164, 2013
• 7 Dane S., "Correlation between hand preference and intraocular pressure from right-and left-eyes in right-and left-handers" 43 : 405-408, 2003
• 8 Cheng CY., "Association of ocular dominance and anisometropic myopia" 45 : 2856-2860, 2004
• 9 Linke SJ., "Association between ocular dominance and spherical/astigmatic anisometropia, age, and sex : analysis of 10, 264 myopic individuals" 52 : 9166-9173, 2011
• 10 Ko CJ., "A study on dominant eye" 24 : 459-462, 1983