각막굴절교정학 콘택트렌즈가 근시 및 난시의 진행에 미치는 영향
The Inhibitory Effect of Myopic and Astigmatic Progression by Orthokeratology Lens
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초록
목적: 각막굴절교정 렌즈 착용이 근시진행억제에 미치는 영향을 알아보고자 하였다. 대상과 방법: 근시 및 난시를 대상으로 각막굴절교정 렌즈를 1년 이상 착용한 144안을 착용 전과 렌즈착용을 중지한 지 2-4주 후에조절마비 굴절검사 및 각막곡률반경을 측정하여 굴절력의 차이를 비교하였다. 근시 및 난시를 안경으로 교정한 대상을 대조군으로190안을 선정하여 렌즈착용 군과 비교하였다. 나이, 근시 및 난시와의 관계, 근시 및 난시의 진행과 착용시간과의 연관성을 각각 비교하였다. 결과: 각막굴절교정 렌즈를 사용한 대상의 구면렌즈대응치은 평균 -3.36 ± 1.96D였으며, 난시는 평균 -0.86 ± 0.72D, 기간은 평균3.41 ± 1.5년이었고 나이는 평균 10.31 ± 2.37년이었다. 렌즈를 착용한 경우의 1년간 근시진행은 평균 0.25 ± 0.31D로 대조군 0.62± 0.39D와 유의한 차이가 있었고(t-test, p＜0.01), 난시진행도 렌즈를 착용한 군이 평균 0.06 ± 0.2D로 대조군 0.15 ± 0.21D와유의한 차이를 보였다(t-test, p＜0.01). 두 군 간의 나이, 근시·난시의 양 및 진행 정도, 착용기간은 유의한 차이가 없었다(t-test,p＞0.01). 결론: 한국인에 있어서 각막굴절교정 렌즈는 안경을 사용하는 경우보다 근시와 난시의 진행을 억제시키는 유용한 방법으로 생각한다.
Abstract
Purpose: To investigate the clinical effects of orthokeratology lens wear on inhibition of the progression of Korean myopia and astigmatism. Methods: The authors reviewed out-patient records of 144 eyes of 74 patients wearing orthokeratology lenses. The cycloplegic refraction and keratometry before and after wearing the lens were compared. The 190 eyes wearing spectacles were included into the control group. We evaluated the relationship between orthokeratology lens wear and control group according to age, initial myopia, initial astigmatism, myopic progression, astigmatic progression and duration of orthokeratology lens wearing. Results: The mean cycloplegic refractive error of spherical equivalent was -3.36 ± 1.96 diopters (D) in the patients wearing orthokeratology lenses, the mean astigmatism was -0.86 ± 0.72 D, and the mean wearing period was 3.41 ± 1.5 years. The mean myopic progression was 0.25 ± 0.31 D in lens wearing, and 0.62 ± 0.39 D in glasses wearing, respectively. There were statistically significant differences between lens and glasses wearing group (t-test, p < 0.01). The mean astigmatic progression was 0.06 ± 0.22 D in lens wearing, and 0.15 ± 0.21 D in glasses wearing control group respectively, and the results also show statistically significant differences (t-test, p < 0.01). There were no relationships between two groups as for age, initial myopia, initial astigmatism and duration of orthokeratology lens wearing (t-test, p > 0.01). Conclusions: The orthokeratology lens was found to be effective in suppression of the progression of Korean myopia and astigmatism, compared with the glasses.
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