Journal of The Korean Ophthalmological Society (대한안과학회지)

The Korean Ophthalmological Society (대한안과학회)
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Change in Ocular Dimensions with Age in Patients with Emmetropia

정시안에서 연령에 따른 안수치들의 변화

Kim, Chan-Su;Kim, Su-Young;Park, Young-Hoon;Lee, Young-Chun
김찬수;김수영;박영훈;이영춘

  • Published : 2008.03.01
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Abstract

Purpose: We evaluated changes in ocular dimensions according to age in patients with emmetropia. Methods: We examined the refraction, corneal curvature, and biometry in 150 subjects from 5 to 75 years old with spherical equivalent refractions under ±0.75 diopter (D). Ocular dimensions were measured by A-scan ultrasonography and keratometry. We analysed the distribution and change of ocular dimensions according to age (1: 0~19-year-old group, 2: 20~39-year-old group, 3: 40~59-year-old group, 4: 60~79- year-old group). Results: The values for corneal radius (CR), vitreous chamber depth (VCD) and axial length (AL) were highest in group 2. Lens thickness (LT) increased with increasing age, whereas anterior chamber depth (ACD) decreased with increasing age (P<0.05). CR, VCD, AL (P<0.05) and ACD (P=0.10) seem to have higher values in males, while LT seems to have a higher value in females (P=0.06). Conclusions: Axial length increases with increasing age in subjects aged 0 to 39 years in emmetropia. In subjects aged 40 years or older, axial length becomes smaller with age. In each age group compensational changes to achieve emmetropia according to AL change are shown in ocular dimensions like CR, VCD, ACD, LT.

목적 : 정시안에 있어서 연령 군별 안수치들의 분포 변화와 그 유의성을 알아보고자 하였다. 대상과 방법 : 안질환 병력이 없는 만 5세부터 75세 사이의 정시안 150명(150안)을 대상으로 20세 간격으로 1군(0~19세) 2군(20~39세), 3군(40~59세), 4군(60~79세)의 4개 군으로 분류하고, 수동각막곡률계와 A-scan 초음파를 측정하여 안수치들의 분포 변화를 분석하였다. 결과 : 각막곡률반경, 유리체 깊이, 안축장은 2군(평균나이 25세)을 최대로 이전과 이후로는 감소 양상을 보였고, 1군부터 수정체 두께는 점차 증가하는 양상을, 전방의 깊이는 감소 양상을 보였으며, 이들은 모두 통계적으로 유의성이 있게 나타났다(P<0.05). 각 군별 평균값의 남녀 비교에서 각막곡률반경, 유리체 깊이, 안축장은 통계학적으로 의미 있게 남자가 여자보다 큰 값을 나타냈고(P<0.05), 전방의 깊이는 남자가 여자보다 큰 경향을 보였으며(P=0.10), 수정체의 두께는 여자가 남자 보다 두꺼운 경향을 보였다(P=0.06). 결론 : 정시안은 2군을 최대로 이전과 이후 연령 군으로 갈수록 안축장이 작아지며, 연령 군별로 정시를 유지하기 위한 안축장의 변화에 따른 각막곡률반경, 유리체 깊이, 전방의 깊이, 수정체의 두께 등 안수치들의 유의한 보상적 변화들이 나타났다.

Keywords

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