Alberdi Txomin, Mendicute Javier, Bascarán Lucía, Barandika Olatz, Ruiz-Ederra Javier
Department of Ophthalmology, Donostia University Hospital, Donostia-San Sebastian 20014, Spain.
Biodonostia Health Research Institute, Donostia-San Sebastian 20014, Spain.
Int J Ophthalmol. 2018 Apr 18;11(4):623-628. doi: 10.18240/ijo.2018.04.14. eCollection 2018.
To analyze and compare five different variables over one year follow-up (1wk, 1, 3, 6 and 12mo): anterior capsule (AC), and posterior capsule (PC) area densitometry values, AC and PC linear densitometry values, and AC opening area reduction ratio after femtosecond laser-assisted cataract surgery.
This was a prospective comparative study. Seventy-one patients underwent femtosecond laser-assisted cataract surgery on single eye between June 2014 and December 2015. A 5.0 mm diameter laser assisted anterior capsulotomy was performed on all eyes. In every post-surgery evaluation, AC opacificaction (ACO) and PC opacification (PCO) density levels were provided by Oculus PentacamHR using area and linear densitometry methods. Digital images were captured with a slit-lamp Topcon photographic camera and IMAGEnet 5 software. The AC opening area on the digital images was measured using the Sketchandcalc area calculator and converted to reduction ratio levels.
Using Pearson correlation coefficient (PCC), we found no correlation (=-0.091, =0.46) in the twelfth month assessment between the evolution of ACO area densitometry values and PCO area densitometry values considered as independent variables. We found no correlation, using PCC (=-0.096, =0.43) between the evolution of ACO linear densitometry values and PCO linear densitometry values, in the twelfth month visit, working both as independent variables. AC linear densitometry levels and AC area densitometry levels continued to grow strongly from sixth to twelfth months. Analysis of the values of AC opening area reduction ratio (1wk, 1, 3, 6, 12mo) revealed statistically significant differences between the values of successive examinations but the magnitude of the change decreased. In the final period of monitoring between six and twelve months the magnitude of change was low.
Our results show strong increases of Scheimpflug ACO densitometry values from the sixth to the twelfth month while capsulorhexis area reduction ratio levels displayed a considerable decrease. We found no correlation between ACO area and linear densitometry values and PCO area and linear densitometry values, in the twelfth month examination, working as independent variables.
分析和比较飞秒激光辅助白内障手术后一年随访期（1周、1个月、3个月、6个月和12个月）内五个不同变量：前囊（AC）和后囊（PC）面积密度测量值、AC和PC线性密度测量值以及AC开口面积减少率。
这是一项前瞻性比较研究。2014年6月至2015年12月期间，71例患者单眼接受了飞秒激光辅助白内障手术。所有眼睛均进行了直径5.0mm的激光辅助前囊切开术。在每次术后评估中，通过Oculus PentacamHR使用面积和线性密度测量方法提供AC混浊（ACO）和PC混浊（PCO）密度水平。使用裂隙灯Topcon照相相机和IMAGEnet 5软件拍摄数字图像。使用Sketchandcalc面积计算器测量数字图像上的AC开口面积，并将其转换为减少率水平。
使用Pearson相关系数（PCC），在第12个月评估中，将ACO面积密度测量值和PCO面积密度测量值的变化视为自变量时，我们未发现相关性（r=-0.091，P=0.46）。在第12个月随访中，将ACO线性密度测量值和PCO线性密度测量值的变化视为自变量时，使用PCC（r=-0.096，P=0.43）我们也未发现相关性。AC线性密度测量水平和AC面积密度测量水平从第6个月到第12个月持续强劲增长。对AC开口面积减少率值（1周、1个月、3个月、6个月、12个月）的分析显示，连续检查的值之间存在统计学显著差异，但变化幅度减小。在6至12个月的最后监测期内，变化幅度较小。
我们的结果显示，从第6个月到第12个月，Scheimpflug ACO密度测量值大幅增加，而撕囊面积减少率水平则显著下降。在第12个月检查中，将ACO面积和线性密度测量值以及PCO面积和线性密度测量值视为自变量时，我们未发现相关性。
