Fernández Joaquín, Rodríguez-Vallejo Manuel, Martínez Javier, Tauste Ana, Piñero David P
a Department of Ophthalmology (Qvision) , Vithas Virgen del Mar Hospital , Almería , Spain.
b Department of Ophthalmology , Torrecárdenas Hospital Complex , Almería , Spain.
Curr Eye Res. 2018 Aug;43(8):998-1005. doi: 10.1080/02713683.2018.1478981. Epub 2018 May 30.
Purpose/Aim: To evaluate the impact of ocular parameters on the visual performance achieved with the multifocal intraocular lens (IOL) Bi-Flex M 677MY.
About 26 subjects were included in the current study. Several physiological variables were retrieved from the 3-month follow-up visit, including pupil diameter and distance from pupil center to the vertex normal of the anterior cornea (µ). These variables were also obtained in the preoperative visit. Binocular and monocular visual acuity defocus curves were measured at 1 and 3 months after surgery, respectively. The monocular Area Under the Curve (AUC) was computed along the total range (Total Area Under the Curve (TAUC), +1.00 to -4.00 D) and for the ranges of Far (Far Area Under the Curve (FAUC), +0.50 to -0.50 D), (Intermediate Area Under the Curve (IAUC), -1.00 to -1.50 D) and Near vision (Near Area Under the Curve (NAUC), -2.00 to -4.00 D). Correlations between these areas and the postoperative physiological variables were assessed.
The mean µ was reduced from 0.21 to 0.10 mm after surgery, as well as pupil diameters, either photopic (-7.4%) or mesopic (-8.1%) (p < 0.05). The mean AUCs were 2.08 ± 0.74 for TAUC, 0.57 ± 0.17 for FAUC, 0.16 ± 0.09 for IAUC, and 0.81 ± 0.29 for NAUC. Significant correlations were found between NAUC and corneal power (r = -0.39, p = 0.05) as well as between IAUC and temporal decentration of the lens from vertex normal (ρ = -0.41, p = 0.04).
The visual performance at near distance with the IOL evaluated improved in eyes with less corneal power. On the other hand, a slight temporal IOL decentration from vertex normal also improved intermediate visual acuity. The binocular defocus curve was similar to other trifocal IOLs.
目的/目标：评估眼部参数对多焦点人工晶状体（IOL）Bi-Flex M 677MY视觉性能的影响。
本研究纳入约26名受试者。从3个月的随访中获取了几个生理变量，包括瞳孔直径以及从瞳孔中心到角膜前表面顶点法线的距离（µ）。这些变量在术前检查时也已获取。分别在术后1个月和3个月测量双眼和单眼视力散焦曲线。计算单眼曲线下面积（AUC），包括整个范围（总曲线下面积（TAUC），+1.00至 -4.00 D）以及远视力范围（远视力曲线下面积（FAUC），+0.50至 -0.50 D）、（中间视力曲线下面积（IAUC），-1.00至 -1.50 D）和近视力范围（近视力曲线下面积（NAUC），-2.00至 -4.00 D）。评估这些面积与术后生理变量之间的相关性。
术后平均µ从0.21毫米降至0.10毫米，瞳孔直径在明视（-7.4%）或中视（-8.1%）时也减小（p < 0.05）。TAUC的平均AUC为2.08 ± 0.74，FAUC为0.57 ± 0.17，IAUC为0.16 ± 0.09，NAUC为0.81 ± 0.29。发现NAUC与角膜屈光力之间存在显著相关性（r = -0.39，p = 0.05），以及IAUC与晶状体相对于顶点法线的颞侧偏心之间存在显著相关性（ρ = -0.41，p = 0.04）。
在角膜屈光力较小的眼中，所评估的IOL在近距离的视觉性能有所改善。另一方面，晶状体相对于顶点法线的轻微颞侧偏心也改善了中间视力。双眼散焦曲线与其他三焦点IOL相似。
