| Objective Clinical Evaluation of Ocular Optical Instrument According to the Type of Lens Opacity. |
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Chang Won Park, Geun Yeong Kim, Hyo Jin Kim, Je Hyung Hwang, Choun Ki Joo |
1Department of Ophthalmology and Institute for Visual Science College of Medicine The Catholic University of Korea, Seoul, Korea. ckjoo@catholic.ac.kr
2Division of Health Science, Baekseok University, Cheonan, Korea.
3Graduate School of Health and Welfare, Baekseok University, Seoul, Korea. |
| 수정체 혼탁유형에 따른 객관적 검안기기의 결과 |
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박창원1⋅김근영1⋅김효진2,3⋅황제형1⋅주천기1 |
Department of Ophthalmology and Institute for Visual Science College of Medicine The Catholic University of Korea1, Seoul, Korea
Division of Health Science, Baekseok University2, Cheonan, Korea
Graduate School of Health and Welfare3, Seoul, Korea |
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| Abstract |
PURPOSE
To investigate the results using the OQAS and the Pentacam in cataract patients classified according to the type of lens opacity. METHODS: The present study included 124 eyes of 92 patients who had cataract surgery at Seoul St. Mary's Hospital from December 2011 to January 2012 and were classified into nuclear, cortical, and posterior subcapsular cataract patients. The lens opacity was determined with OSI, MTF, Strehl ratio, width 10%, width 50% and the opacity of Scheimpflug image by the OQAS and the Pentacam. Additionally, the correlation between subjective cataract classification and objective opacity value was analyzed. RESULTS: The nuclear cataract group showed a 6.40 +/- 2.41 OSI value and had high opacity. The cortical cataract group showed the highest MTF cut-off value (12.02 +/- 6.19 C/deg). When evaluating Pentacam results, the posterior subcapsular cataract group had the lowest average level of lens opacity (9.12 +/- 1.08) followed by in increasing order, the cortical cataract group (9.79 +/- 1.67) and the nuclear cataract group (11.08 +/- 1.84). The results were statistically significant (p < 0.001). The OSI value of the OQAS was significantly correlated with nuclear and posterior opacity (p = 0.049, p = 0.039, respectively) except cortical opacity (p = 0.781). MTF and nuclear opacity showed statistically significant correlation and the lens opacity of Pentacam was correlated with nuclear and posterior opacities. In cortical cataract with severe peripheral opacity, the cortical opacity showed significant correlation with Maximum. CONCLUSIONS: The OQAS and Pentacam results showed high correlation with the nuclear and posterior opacities which can be useful for cataract surgery. |
| Key Words:
Cataract;MTF;OQAS;OSI;Pentacam |
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