| 경화에 따른 수정체핵의 굳기 |
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백승민, 김현진, 서종모, 권동일, 최혁진, 최진석, 김미금, 위원량 |
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1Mechanical and Aerospace Engineering, 2Electrical Engineering, College of Engineering, Seoul National University, 3Department of Ophthalmology, Seoul National University College of Medicine, 4Materials Science and Engineering, College of Engineering, Seoul National University, Seoul, 5Saevit Eye Center, Goyang, Korea |
| Hardness of Nucleus in Sclerotic Change |
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Seung Min Baek, Hyoun Jin Kim, Jong-Mo Seo, Dongil Kwon, Hyuk Jin Choi, Jin-Seok Choi, Mee Kum Kim, Won Ryang Wee |
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| Abstract |
Purpose
Hardness of lens nucleus was measured in order to estimate the force needed for phacoemulsification and application toward the development of a new surgical technique. Methods: In this experiment, 35 cases were obtained from extracapsular cataract extraction surgery at the Seoul National University Hospital between March 2008 and June 2009. The lens nuclear hardness is measured by using a microindentation instrument. The values in HSV color system were used to represent the degree of the opacification. To obtain the precise value, pictures of the lens nucleuses were taken by a digital camera. Results: Due to deformation, 15 among 35 samples could not be tested. The hardness of each lens nucleus and the value of each lens nucleus had linear correlation (R2=0.56, p＜0.05). Conclusions: It is found that as the lens nuclear color is darker, the lens nucleus is harder. This relationship can be used to determine an adequate surgery process based on the lens nuclear color. (Korean J Optom Vis Sci 2011;10(2):82-85) |
| Key Words:
Indentation test, Lens hardness, Phacoemulsification |
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