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Investigation of refractive error after cataract surgery using individual A constant Toyohiro Tsumura 1 , Hiroyuki Nomoto 2 , Hidetaka Yamaji 3 1Dept of Ophthalmol, Takamatsu Mun Hosp Kagawa Clin 2Nomoto Eye Clin 3Shirai Hosp pp.481-485
Published Date 2015/4/15
DOI https://doi.org/10.11477/mf.1410211290
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Abstract. Purpose:To report investigation of refractive error after cataract surgery using individual A constant in intraocular lens(IOL). Cases and Method:This study was made on 134 eyes of 77 cases that received cataract surgery in the past one year. Power of IOL was calculated using the SRK/T formula. Prospective refraction in each IOL were calculated using personal A constant(PAC group)and individual A constant(IAC group)provided by cataract surgery during 2-3 years ago. Both groups were evaluated regarding subjective refraction in one month after surgery. Results:The means of refractive error(absolute refractive error)in one month later after surgery were 0.28±0.42D(0.42±0.29D)(PAC group), 0.08±0.41D(0.31±0.28D)(IAC group). Both means were significant difference between the two groups(t-test, p<0.001). In ratio of refractive error within each diopter, the error group within ±0.25D was significant difference(χ2 test, p<0.01). Conclusion:It became that the refractive error after cataract surgery using individual A constant was significantly less compared with the usual method. It was suggested that this calculation method reduced the refractive error after cataract surgery.


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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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