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소절개창을 이용한 백내장 수술에서 절개창 길이에 따른 술 후 난시 비교
구희찬,김효진,주천기.Hee-Chan Ku. M.D.. Hyo-Jin Kim. MS.. Choun-Ki Joo. M.D.. Ph.D. 대한안과학회 2005 대한안과학회지 Vol.46 No.3
Purpose: To compare surgically-induced corneal astigmatism after 3.0 mm-sized incision and 3.2~3.4 mm-sized extended incision in cataract surgery. Methods: This study included 205 eyes of 202 patients having phacoemulsification with temporal clear corneal incision. The eyes were classified into 4 groups according to IOL type and incision size: Group A, silicone IOL was inserted using the injector through 3.0 mm sized incision; Group B, silicone IOL was inserted using the injector through 3.2 mm sized incision; Group C, acrylic IOL was inserted using the forceps through 3.4 mm sized incision; and Group D, acrylic IOL was inserted using the injector through 3.2 mm sized incision. The uncorrected visual acuity, autorefractometry, and keratometry were taken preoperatively and at 1 week and 2 months postoperatively. Results: Preoperatively, there was no significant difference between the 4 groups in preoperative astigmatism. On the seven operative day, there was significant difference between the 4 groups with one-way ANOVA test (P=.044), and between A and C, and between A and D with post-hoc tests (P<.05). There was no significant difference between the 4 groups at 2 months postoperatively (P=.945). On the seven operative day, there were significant differences between the 4 groups in surgically-induced corneal astigmatism with one-way ANOVA test (P=.009), and between A and C, and between A and D with post-hoc tests (P<.05). There was no significant difference between the 4 groups at 2 months postoperatively (P=.985). Conclusions: The 3.0 mm-sized clear corneal incision without extension induced early stabilization of surgically-induced corneal astigmatism and rapid visual rehabilitation.
라식 수술 후 각막곡률계산법과 각막지형도에 의한 각막곡률의 상관성
구희찬,조소현,김효진,김진형,주천기,Hee-Chan Ku,So-Hyun Cho,B,S,Hyo-Jin Kim,M,S,Jin-Hyung Kim,Choun-Ki Joo,PhD 대한안과학회 2005 대한안과학회지 Vol.46 No.4
Purpose: To evaluate the relation between clinical history method and Orbscan Ⅱ for corneal power measurement after laser in situ keratomileusis (LASIK). Methods: A total of 77 consecutive eyes of 43 patients who were treated with LASIK for myopia were followed up for at least 6 months. Corneal power by clinical history methods (CK) was compared with 3.0 mm zones of simulated keratometry (Sim-K), with 0.5, 1.0, 1.5, 2.0 and 3.0 mm zones of axial power maps (AP) and with 2.0, 3.0, 3.5, 4.0 and 5.0 mm zones of total optical power maps (TOP). Results: Sim-K and all AP-map zones using Orbscan II were significantly higher (P<.001) than the CK value, while all TOP-map zones were significantly lower (P<.001) than the CK value. Among them, 3.0 and 4.0 mm TOP-map zones showed the highest correlation with the corneal power by CK (r2=0.889, P<.001; r2=0.889, P<.001). The correlation was higher with 3.0 mm TOP-map zone (r2=0.800, P<.001) than with 4.0 mm TOP-map zone (r2=0.793, P<.001) in high myopia patients. Conclusions: Although 3.0 and 4.0 mm TOP-map zones of Orbscan II were correlated highly with the CK value, these correlations were relatively low in high myopia patients and 3.0 mm TOP-map zone was better correlated than 4.0 mm TOP-map zone in these patients.