Change Amplitude of Accommodation and Lens Adaptation after Adding Spherical Lens

서지정보

ㆍ발행기관 : 대한시과학회 ㆍ수록지정보 : 대한시과학회지 / 19권 / 3호
ㆍ저자명 : Min Jae Lee, Sang-Yeob Kim, Byeong-Yeon Moon, Dong-Sik Yu, Hyun Gug Cho

한국어 초록

목 적 : 가입한 (±)구면렌즈 굴절력에 대응하는 조절력의 변화를 비교하여 렌즈의 적응효과를 알아보았다. 방 법 : 평균연령 21.76±1.76세의 51명(남자 26명, 여자 25명)을 대상으로 하였다. 대상자들의 완전교정 된 눈 앞에 S+1.00 D, S+2.00 D, S+3.00 D, S-1.00 D, S-2.00 D, S-3.00 D를 순서대로 가입하여, 가입 직 후, 15분 후, 그리고 30분 후에 각 단안조절력을 측정하였다. 측정값들은 완전교정 상태의 조절력과 비교 하였고, 렌즈 가입 전·후 측정된 단안조절력의 변화값은 가입한 굴절력 값에 대한 상대 비율로 계산하였다. 결 과 : S+1.00 D, S+2.00 D, S+3.00 D 가입 후 조절력은 완전교정 조절력보다 모두 유의하게 (p<0.001) 증가되었지만, 가입된 렌즈굴절력의 약 55~68% 수준이었다. S-1.00 D, S-2.00 D, S-3.00 D 가입 후 조절력은 완전교정 조절력보다 모두 유의하게(p<0.001) 감소되었고, 가입된 굴절력의 약 72~105% 수준이었다. 결 론 : 조절변화를 목적으로 구면렌즈를 처방할 때, 임상전문가들은 렌즈적응으로 인해 더해준 구면굴절 력 값보다 조절변화량이 대부분 감소될 것이라는 점을 고려해야 한다.

영어 초록

Purpose: To evaluate the lens adaptation by comparing the changes of amplitude of accommodation against adding power of (±) spherical lenses. Methods: 51 subjects (26 men and 25 women) aged 21.76±1.76 years participated for this study. Refractive errors of subjects were fully corrected, S+1.00 D, S+2.00 D, S+3.00 D, S-1.00 D, S-2.00 D, and S-3.00 D were added in the order on each eye, and after that, monocular amplitude of accommodation (AA) was measured using a push-up method at 0, 15, and 30 minutes for each subject. The values were statistically compared to those of fully corrected state and the change level of AA between before and after adding lens was calculated as a relative ratio to the each spherical diopters added. Results: After S+1.00 D, S+2.00 D, or S+3.00 D was added, the AA was significantly (p<0.001) higher than that of fully corrected state. However, the change level of the AA was by 55~68% of the adding spherical diopter. After S-1.00 D, S-2.00 D, or S-3.00 D was added, the AA was significantly (p<0.001) lower than that of fully corrected state. The change level of the AA was by 72~105% of the adding spherical diopter. Conclusions: When prescribing a spherical lens related to accommodative functions, clinical practitioners have to consider that the change of AA is mostly smaller than the power of added spherical lens because of lens adaptation.

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