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AL-Scan;을 이용한 술 전 안구생체계측과 백내장 수술 후 굴절력 예측의 정확성
김성인,강석재,오태훈,최진석,백남호,Sung In Kim,Sug Jae Kang,Tae Hoon Oh,Jin Seok Choi,Nam Ho Baek 대한안과학회 2013 대한안과학회지 Vol.54 No.11
Purpose: To compare the axial lengths, anterior chamber depths, and keratometric measurements and to predict postoperative refractions of AL-Scan<sup>®, IOL master<sup>®, and ultrasound. Methods: A total of 40 eyes in 30 patients who received cataract surgery were included in the present study. The axial length, anterior chamber depth, and keratometry were measured by 2 types of partial coherence interferometry (AL-Scan<sup>®and IOL master<sup>®) and ultrasound. The SRK/T formula was used to calculate IOL power, and the predictive error which subtracts predictive refraction from postoperative refraction was compared among the ocular biometry devices. Results: Axial lengths were 23.08 ± 0.62 mm, 23.09 ± 0.62 mm, and 22.99 ± 0.62 mm measured by AL scan<sup>®, IOL master<sup>®, and ultrasound, respectively. Axial length measured by ultrasound was statistically significantly shorter than AL scan<sup>® and IOL master<sup>® (p < 0.001, p < 0.001, respectively). The anterior chamber depth and keratometry were 3.11 ± 0.06 mm and 44.82 ± 1.34 D measured by AL scan<sup>®, and 3.13 ± 0.06 mm and 44.85 ± 1.26 D measured by IOL master<sup>®, respectively. The differences of anterior chamber depth and keratometry between the 2 devices were not statistically significant (p = 0.226, p = 0.331, respectively). The mean absolute prediction errors were 0.44 ± 0.35 D, 0.40 ± 0.34 D, and 0.39 ± 0.30 D in AL-Scan<sup>®, IOL master<sup>® and ultrasound, respectively, and were not statistically significantly different (p = 0.843, p = 0.847, p = 1.000, respectively). Conclusions: The ocular biometric measurements and prediction of postoperative refraction using AL-Scan<sup>® were as accurate as IOL master<sup>® and ultrasound. J Korean Ophthalmol Soc 2013;54(11):1688-1693
레스토; 다초점 인공수정체 삽입술 후 잔여굴절이상에 대한 레이저 굴절교정수술 효과
김성인,김숙진,오재윤,박규홍,강석재,Sung In Kim,MD,Suk Jin Kim,MD,Jae Yoon Oh,MD,Kyu Hong Pak,MD,Sug Jae Kang,MD 대한안과학회 2012 대한안과학회지 Vol.53 No.12
Purpose: To evaluate the clinical effects of excimer laser refractive surgery on eyes with residual refractive error after implantation of ReSTOR<sup>? multifocal intraocular lenses. Methods: We retrospectively reviewed the medical records of 10 eyes of 6 patients who had undergone cataract surgery with implantation of multifocal intraocular lenses. Photorefractive keratectomy (PRK) (5 eyes) and laser-assisted in situ keratomileusis (LASIK) (5 eyes) was performed on 10 eyes with residual refractive error. Results: After cataract surgery and before laser surgery, the mean spherical equivalent (SE) was -0.34 ± 0.89 D and the mean astigmatism was 2.08 ± 0.55 D. Six months after laser surgery, the mean SE was -0.33 ± 0.30 D (p = 0.354) and the mean astigmatism was 0.23 ± 0.28 D. The changes in astigmatism between paired preoperative and postoperative values were statistically significant (p < 0.0001). At 6 months after surgery, uncorrected distance visual acuity significantly improved to 0.11 ± 0.10 (log MAR) (p < 0.0001) There were no significant changes in the best corrected distance visual acuity and uncorrected near visual acuity (p = 0.073, p = 0.100). Conclusions: On the basis of predictability and stability, excimer laser surgery appears to be a clinically useful procedure to correct residual refractive error after implantation of ReSTOR<sup>? multifocal intraocular lenses.