| Comparison of the Clinical Effects of Implantation of Aspheric and Spherical Intraocular Lenses. |
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Jong Soo Lee, Tae Jin Yoon, Jin Hwan Ahn |
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Department of Ophthalmology, School of Medicine, Pusan National University, Busan, Korea. jongsool@pusan.ac.kr |
| 구면렌즈 C-flex™(570C)와 비구면렌즈 C-flex™(970C)의 임상적 유용성의 비교 |
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이종수ㆍ윤태진ㆍ안진환 |
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Department of Ophthalmology, School of Medicine, Pusan National University, Busan, Korea |
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| Abstract |
PURPOSE
To compare postoperative visual acuity, spherical equivalent and contrast sensitivity of eyes implanted with either spherical C-flex(TM)(570C) or aspheric C-flex(TM)(970C) intraocular lenses (IOL). METHODS: Forty eyes implanted with posterior chamber intraocular lenses were divided into two groups: C-flex(TM)(570C) (20 eyes) and C-flex(TM)(970C) (20 eyes). In these two groups, postoperative best corrected visual acuity (logMAR), spherical equivalent and contrast sensitivity was performed at one month and three months, postoperatively. RESULTS: In the spherical group, the preoperative naked visual acuity was 1.25+/-0.46 (logMAR). The best corrected visual acuity at postoperative three months was 0.49+/-0.28. In the aspheric group, the preoperative naked visual acuity was 1.29+/-0.67. The best-corrected visual acuity at postoperative three months was 0.39+/-0.30. There were statistically significant differences in best-corrected visual acuity between the preoperative and the postoperative three months results in the spherical IOL group and in the aspherical IOL group. There were no statistically significant differences in spherical equivalent between preoperative and postoperative one-month results and between preoperative and postoperative three-month results in the spherical IOL group and the aspherical IOL group. In the aspherical IOL group, contrast sensitivity at postoperative one and three months were better in the all spatial frequency than in the preoperative scotopic condition. CONCLUSIONS: When we compared eyes implanted with the spherical C-flex(TM)(970C) with eyes implanted with the spherical C-flex(TM) (570C), there were no statistically significant differences in spherical equivalent or best corrected visual acuity. The aspherical IOL group showed better contrast sensitivity than did the spherical IOL group postoperatively at both one month and three months. |
| Key Words:
Aspheric intraocular lens;Contrast sensitivity;Visual acuity |
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