Kim Jung-Sub, Chung So-Hyang, Joo Choun-Ki
Department of Ophthalmology and Visual Science, Kangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
J Cataract Refract Surg. 2009 Jul;35(7):1204-9. doi: 10.1016/j.jcrs.2009.02.032.
To evaluate the relationship between lens density measured using the Pentacam Scheimpflug system and phacodynamics (phacoemulsification time, phacoemulsification energy, and balanced salt solution [BSS] use) in patients with age-related nuclear cataract.
Department of Ophthalmology and Visual Science, Kangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
This prospective observer-masked study was of eyes with age-related nuclear cataract. Objective lens density (0 to 100 points) was determined using the Scheimpflug system. Subjective grading was by the Lens Opacities Classification System III (LOCS III). The correlations between lens density values and phacoemulsification time, phacoemulsification energy, and BSS use were analyzed prospectively.
Fifty-three patients (60 eyes) were evaluated. The mean Scheimpflug-measured lens nuclear density was 14.71 +/- 6.12 (SD). There was a positive linear correlation between the Scheimpflug-measured lens nuclear density and the LOCS III grading scores for nuclear opalescence (NO) and nuclear color (NC) (r = 0.734 and 0.719, respectively; both P<.05). The Scheimpflug-measured lens nuclear density correlated with torsional amplitude, time, and cumulated dissipated energy (CDE) (P<.05), but not with BSS use (P = .195). The CDE was more strongly correlated with Scheimpflug-measured lens nuclear density (r = 0.797) than with LOCS III NO or NC scores (r = 0.614 and r = 0.637, respectively).
Scheimpflug-measured lens nuclear density correlated with phacoemulsification time and energy. The Scheimpflug system enabled quantitative cataract grading and may help predict phacodynamics in cataract surgery.
评估使用Pentacam Scheimpflug系统测量的晶状体密度与年龄相关性核性白内障患者的超声乳化动力学（超声乳化时间、超声乳化能量和平衡盐溶液[BSS]用量）之间的关系。
韩国首尔天主教大学医学院江南圣母医院眼科与视觉科学系。
这项前瞻性观察者盲法研究针对年龄相关性核性白内障患者的眼睛。使用Scheimpflug系统测定客观晶状体密度（0至100分）。主观分级采用晶状体混浊分类系统III（LOCS III）。前瞻性分析晶状体密度值与超声乳化时间、超声乳化能量和BSS用量之间的相关性。
评估了53例患者（60只眼）。Scheimpflug测量的晶状体核密度平均值为14.71±6.12（标准差）。Scheimpflug测量的晶状体核密度与核混浊（NO）和核颜色（NC）的LOCS III分级评分之间存在正线性相关性（分别为r = 0.734和0.719；均P<0.05）。Scheimpflug测量的晶状体核密度与扭转幅度、时间和累积消散能量（CDE）相关（P<0.05），但与BSS用量无关（P = 0.195）。CDE与Scheimpflug测量的晶状体核密度的相关性（r = 0.797）比与LOCS III NO或NC评分的相关性更强（分别为r = 0.614和r = 0.637）。
Scheimpflug测量的晶状体核密度与超声乳化时间和能量相关。Scheimpflug系统能够实现白内障的定量分级，并可能有助于预测白内障手术中的超声乳化动力学。
