Gundersen Kjell G, Potvin Rick
IFocus Øyeklinikk AS, Haugesund, Norway.
Science in Vision, Akron, NY, USA.
Clin Ophthalmol. 2017 Jun 8;11:1081-1087. doi: 10.2147/OPTH.S136164. eCollection 2017.
To compare two different diffractive trifocal intraocular lens (IOL) designs, evaluating longer-term refractive outcomes, visual acuity (VA) at various distances, low contrast VA and quality of vision.
Patients with binocularly implanted trifocal IOLs of two different designs (FineVision [FV] and Panoptix [PX]) were evaluated 6 months to 2 years after surgery. Best distance-corrected and uncorrected VA were tested at distance (4 m), intermediate (80 and 60 cm) and near (40 cm). A binocular defocus curve was collected with the subject's best distance correction in place. The preferred reading distance was determined along with the VA at that distance. Low contrast VA at distance was also measured. Quality of vision was measured with the National Eye Institute Visual Function Questionnaire near subset and the Quality of Vision questionnaire.
Thirty subjects in each group were successfully recruited. The binocular defocus curves differed only at vergences of -1.0 D (FV better, =0.02), -1.5 and -2.00 D (PX better, <0.01 for both). Best distance-corrected and uncorrected binocular vision were significantly better for the PX lens at 60 cm (<0.01) with no significant differences at other distances. The preferred reading distance was between 42 and 43 cm for both lenses, with the VA at the preferred reading distance slightly better with the PX lens (=0.04). There were no statistically significant differences by lens for low contrast VA (=0.1) or for quality of vision measures (>0.3).
Both trifocal lenses provided excellent distance, intermediate and near vision, but several measures indicated that the PX lens provided better intermediate vision at 60 cm. This may be important to users of tablets and other handheld devices. Quality of vision appeared similar between the two lens designs.
比较两种不同的衍射型三焦点人工晶状体（IOL）设计，评估长期屈光结果、不同距离的视力（VA）、低对比度视力和视觉质量。
对接受两种不同设计（FineVision [FV]和Panoptix [PX]）的双眼植入三焦点IOL的患者在术后6个月至2年进行评估。在远距离（4米）、中距离（80和60厘米）和近距离（40厘米）测试最佳矫正和未矫正的远视力。在受试者最佳远距离矫正状态下收集双眼散焦曲线。确定首选阅读距离并测量该距离下的视力。还测量远距离的低对比度视力。使用美国国立眼科研究所视觉功能问卷近视力子集和视觉质量问卷测量视觉质量。
每组成功招募30名受试者。双眼散焦曲线仅在-1.0 D（FV更好，=0.02）、-1.5和-2.00 D（PX更好，两者均<0.01）的聚散度时有所不同。PX晶状体在60厘米处的最佳矫正和未矫正双眼视力明显更好（<0.01），在其他距离无显著差异。两种晶状体的首选阅读距离均在42至43厘米之间，PX晶状体在首选阅读距离下的视力略好（=0.04）。低对比度视力（=0.1）或视觉质量测量（>0.3）在两种晶状体之间无统计学显著差异。
两种三焦点晶状体均提供了出色的远、中、近视力，但多项指标表明PX晶状体在60厘米处提供了更好的中距离视力。这对于平板电脑和其他手持设备的用户可能很重要。两种晶状体设计的视觉质量似乎相似。
