Soft shell 기법과 병행한 회전진동방식 초음파 유화술의 임상결과 = Clinical Outcomes of Cataract Surgery Using Torsional Mode Phacoemulsification and Soft Shell Technique

국문 초록 (Abstract)

목적: 회전진동방식 초음파 유화술 시행 시 Soft shell 기법에 의한 추가적인 각막내피 세포 보호 효과를 알아보고자 하였다.
대상과 방법: 중등도의 백내장 60안을 대상으로 회전진동방식의 초음파유화술을 시행하였다. 30안은 soft shell 기법을 이용하였고,
대조군으로 30안은 응집형 점탄물질만을 사용하여 술 중 초음파 시간, 평균 초음파 세기, 누적 소비에너지, 평형염액 사용량을 조사하
였다. 이와 함께, 술 전⋅후로 각막내피 세포 개수 및 중심각막두께를 측정 하였다.
결과: 초음파 사용량, 평형염액 사용량 들은 두 군 간에 통계적으로 유의한 차이가 없었다. 중심각막두께는 술 전과 술 후 추적관찰
기간 동안, 두 군 간에 통계적인 차이는 없었다. 각막내피세포개수는 두 군 모두 술 전에 비해 술 후 통계적으로 유의하게 감소하였지만
서로 간에 유의한 차이는 없었다.
결론: 두 군 간에 초음파사용량이나, 각막내피세포개수 및 각막두께에서 차이가 없는 것으로 보아, 중등도의 경화도를 지닌 백내장에
서 회전진동방식의 초음파유화술을 사용한다면 각막내피 세포 보호를 위해 추가적으로 soft shell 기법을 사용할 필요는 없을 것으로
생각된다.

다국어 초록 (Multilingual Abstract)

Purpose: To evaluate the additional protective effect of the soft shell technique on corneal endothelial cells in torsional mode
phacoemulsification.
Methods: Torsional mode phacoemulsification was performed on 60 eyes in 38 patients who were diagnosed with moderate
cataracts. Thirty eyes were assigned to the soft shell technique group, and a control group with 30 eyes using only cohesive
viscoelastics was created to evaluate ultrasound (US) time, mean US intensity, cumulative dissipated energy (CDE), and amount
of used balanced salt solution. Corneal endothelium and corneal thickness were measured before and after the procedure.
Results: There were no statistically significant differences in US time, mean US intensity, cumulative dissipated energy, and
dosage of the balanced salt solution between the two groups. There were no statistically significant differences between the two
groups in postoperative central corneal thickness. Corneal endothelial cell densities decreased significantly after surgery in both
groups, but there were no statistically significant differences between the two groups.
Conclusions: There are no significant differences in the intensity of ultrasound, the density of corneal endothelial cells or the
thickness of the cornea between the two groups. Therefore, the soft shell technique is not needed under torsional mode
phacoemulsification

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