Li Jun-Hua, Feng Yi-Fan, Zhao Yun-E, Zhao Yin-Ying, Lin Lei
School of Ophthalmology and Optometry, the Eye Hospital of Wenzhou Medical University, Zhejiang Eye Hospital, Wenzhou 325000, Zhejiang Province, China.
Department of Ophthalmology, Zhongshan Hospital, Fudan University, Shanghai 200023, China.
Int J Ophthalmol. 2014 Feb 18;7(1):100-3. doi: 10.3980/j.issn.2222-3959.2014.01.18. eCollection 2014.
To evaluate contrast visual acuity (CVA) after implantation of an aspheric apodized diffractive intraocular lens (IOL) or a spherical apodized diffractive IOL in cataract surgery.
This prospective randomized controlled study with a 12-month follow-up compared the results of cataract surgery with implantation of an aspheric AcrySof ReSTOR SN6AD3 IOL (30 eyes) and a spherical AcrySof ReSTOR SN60D3 IOL (30 eyes). CVA with best distance correction was measured at 4 contrast levels (100%, 25%, 10% and 5%) under 3 levels of chart luminance [250, 85 and 25 candelas per square meter (cd/m(2))] using a multi-functional visual acuity tester (MFVA-100).
At 12 months after surgery, there were no statistically significant differences in 100% CVA and 25% CVA under 250cd/m(2) (P 100%=0.875 and P 25%=0.057) and 85cd/m(2) (P 100%=0.198 and P 25%=0.193) between the aspheric group and the spherical group. However, the 10% CVA and 5% CVA were significant better in aspheric group than spherical group under 250cd/m(2) (P 10%=0.042 and P 5%=0.007) and 85cd/m(2) (P 10%=0.002 and P 5%=0.039). Under the luminance level of 25cd/m(2), no significant differences was found in the 100% CVA between the 2 group (P 100%=0.245), while aspheric group had better visual acuity in the remaining 3 contracts (P 25%=0.023, P 10%=0.026 and P 5%=0.002, respectively).
[corrected] The aspheric AcrySof ReSTOR SN6AD3 IOL provided patients with better low-contrast visual acuity than the spherical AcrySof ReSTOR SN60D3 IOL.
评估白内障手术中植入非球面变迹衍射人工晶状体（IOL）或球面变迹衍射IOL后的对比视力（CVA）。
这项前瞻性随机对照研究，随访12个月，比较了植入非球面AcrySof ReSTOR SN6AD3 IOL（30只眼）和球面AcrySof ReSTOR SN60D3 IOL（30只眼）的白内障手术结果。使用多功能视力测试仪（MFVA-100）在3种图表亮度水平[250、85和25坎德拉每平方米（cd/m²）]下的4种对比水平（100%、25%、10%和5%）测量最佳距离矫正下的CVA。
术后12个月，非球面组和球面组在250cd/m²（P 100%=0.875，P 25%=0.057）和85cd/m²（P 100%=0.198，P 25%=0.193）下的100% CVA和25% CVA无统计学显著差异。然而，在250cd/m²（P 10%=0.042，P 5%=0.007）和85cd/m²（P 10%=0.002，P 5%=0.039）下，非球面组的10% CVA和5% CVA显著优于球面组。在25cd/m²的亮度水平下，两组在100% CVA上无显著差异（P 100%=0.245），而非球面组在其余3种对比度下视力更好（分别为P 25%=0.023，P 10%=0.026和P 5%=0.002）。
非球面AcrySof ReSTOR SN6AD3 IOL为患者提供了比球面AcrySof ReSTOR SN60D3 IOL更好的低对比度视力。
