엘립스방식과 오질방식을 이용한 수정체유화술 후 임상결과 비교

목적: Signature(R)의 Ellips 방식과 Infiniti(R)의 Ozil 방식을 이용한 수정체유화술 후 임상결과를 비교하고자 하였다. 대상과 방법: Ellips 방식과 Ozil 방식을 이용하여 60안을 대상으로 수정체유화술을 시행하였다. 초음파 수정체유화술 변수를 동일하게 설정하였다. 평균초음파세기와 총 초음파 에너지 사용량을 기록하였고, 수술 전과 수술 후 중심각막두께, 각막내피세포수를 측정하였다. 결과: 평균초음파세기와 총 초음파 에너지 사용량은 핵경화도 1과 2인 환자에서 Ellips군이 Ozil군에 비해 통계학적으로 유의하게 적었고( p＜0.05), 핵경화도 3과 4인 환자에서는 적은 경향을 보였으나 유의성은 없었다( p＜0.05). 수술 2개월 후 중심각막두께 변화는 각각 8.73 ± 17.62, 5.19 ± 14.42 μm였고, 각막내피세포수 변화는 각각 100.4 ± 196.5, 145.7 ± 323.8 cell/mm2로 유의한 차이는 없었다( p＞0.05). 결론: Ellips 방식은 Ozil 방식에 비해 핵경화도 1, 2에서 더 적은 에너지로 수정체 유화술을 시행할 수 있었지만 그 정도가 수술 후 시력예후, 중심각막두께, 각막내피세포수에 영향을 줄 정도의 차이는 아니었다. Purpose: To compare the clinical outcomes following phacoemulsification in Ellips (Signature(R)) and Ozil (Infiniti(R)) modes. Methods: Phacoemulsification was performed using Ellips and Ozil modes in 30 eyes each. The phacoemulsification parameters such as the maximum phaco power, vacuum power, and aspiration rates were consistent between the two modes. Nuclear sclerosis grade, average phaco power, and the total phaco energy were recorded. The best-corrected visual acuity, central corneal thickness, and endothelial cell counts were measured preoperatively and on postoperative day 1 and on week 1, 2, 4, and 8. Results: The average phaco power and total phaco energy were significantly lower in patients with nuclear sclerosis grades 1 and 2 in the Ellips group compared with those in the Ozil group (p < 0.05). However, when these parameters were measured in patients with nuclear sclerosis grades 3 and 4, the difference was not significant between the 2 groups (p > 0.05). Two months postoperatively, the changes in central corneal thickness were 8.73 ± 17.62 and 5.19 ± 14.42 μm in the Ellips and Ozil groups, and the changes in endothelial cell count were 100.4 ± 196.5 and 145.7 ± 323.8 cells/mm2 (p > 0.05), respectively. The differences did not reach statistical significance. Conclusions: Although the ultrasound energy used in the surgical procedure was significantly lower in the Ellips group compared with that in the Ozil group, especially in patients with nuclear sclerosis grades 1 and 2, there were no significant differences in the best-corrected visual acuity, central corneal thickness, and endothelial cell count between the 2 groups. J Korean Ophthalmol Soc 2011;52(10):1161-1166