Cui Lele, Li Ming, Shen Meixiao, Lu Fan, Wang Jianhua
School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, Zhejiang, China.
Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami, Miami, FL, USA.
J Ophthalmol. 2017;2017:5763172. doi: 10.1155/2017/5763172. Epub 2017 Jun 1.
To evaluate the centration and movement of soft contact lenses and to verify the repeatability of two repeated measurements of the lens centration and movement using ultra-long scan depth optical coherence tomography (UL-OCT).
A 1-day Acuvue® Define™ lens was tested on both eyes of 10 subjects (5 males and 5 females; mean age, 31.6 years). The centration and blink-induced movement of the contact lens were measured using UL-OCT at 5 min and 30 min after insertion. The measurements were repeated once at each checkpoint.
Good repeatability was found in the lens centration and movement between the two repeated measurements at either checkpoint. The values of the lens movement were 0.457 ± 0.248 mm and 0.402 ± 0.229 mm at 5 min and decreased to 0.197 ± 0.065 mm and 0.211 ± 0.110 mm at 30 min after insertion for the right and left eyes, respectively ( < 0.05).
The custom-built UL-OCT presented good repeatability of centration and movement in Define lenses at 5 min and 30 min after insertion. Most of the lenses were centered temporal and inferior to the cornea during the first 30 min wearing period. Compared with 5 min after insertion, the lens was centered better and exhibited less movement at 30 min.
评估软性接触镜的中心定位和移动情况，并使用超长扫描深度光学相干断层扫描（UL-OCT）验证对镜片中心定位和移动进行两次重复测量的可重复性。
对10名受试者（5名男性和5名女性；平均年龄31.6岁）的双眼测试1日抛的酷柏®睛漾™镜片。在插入镜片后5分钟和30分钟时，使用UL-OCT测量接触镜的中心定位和眨眼引起的移动。在每个检查点重复测量一次。
在任一检查点的两次重复测量之间，镜片的中心定位和移动均具有良好的可重复性。插入后5分钟时，右眼和左眼镜片移动的值分别为0.457±0.248毫米和0.402±0.229毫米，30分钟时分别降至0.197±0.065毫米和0.211±0.110毫米（<0.05）。
定制的UL-OCT在插入镜片后5分钟和30分钟时，对睛漾镜片的中心定位和移动表现出良好的可重复性。在佩戴的前30分钟内，大多数镜片位于角膜颞侧和下方中心位置。与插入后5分钟相比，镜片在30分钟时中心定位更好，移动更小。
