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High order aberration and straylight evaluation after cataract surgery with implantation of an aspheric,aberration correcting monofocal intraocular lens 被引量:15
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作者 Florian T A Kretz Tamer Tandogan +1 位作者 Ramin Khoramnia gerd u auffarth 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2015年第4期736-741,共6页
·AIM: To evaluate the quality of vision in respect to high order aberrations and straylight perception after implantation of an aspheric, aberration correcting,monofocal intraocular lens(IOL).·METHODS: Twent... ·AIM: To evaluate the quality of vision in respect to high order aberrations and straylight perception after implantation of an aspheric, aberration correcting,monofocal intraocular lens(IOL).·METHODS: Twenty-one patients(34 eyes) aged 50 to83 y underwent cataract surgery with implantation of an aspheric, aberration correcting IOL(Tecnis ZCB00,Abbott Medical Optics). Three months after surgery they were examined for uncorrected(UDVA) and corrected distance visual acuity(CDVA), contrast sensitivity(CS)under photopic and mesopic conditions with and without glare source, ocular high order aberrations(HOA, Zywave II) and retinal straylight(C-Quant).· RESULTS: Postoperatively, patients achieved a postoperative CDVA of 0.0 log MAR or better in 97.1% of eyes. Mean values of high order abberations were +0.02±0.27(primary coma components) and-0.04 ±0.16(spherical aberration term). Straylight values of the C-Quant were 1.35±0.44 log which is within normal range of age matched phakic patients. The CS measurements under mesopic and photopic conditions in combination with and without glare did not show any statistical significance in the patient group observed(P ≥0.28).· CONCLUSION: The implantation of an aspherical aberration correcting monofocal IOL after cataractsurgery resulted in very low residual higher order aberration(HOA) and normal straylight. 展开更多
关键词 CATARACT ABERRATIONS intraocular lens
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光路追迹法计算角膜屈光手术后人工晶状体的屈光力 被引量:3
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作者 金海鹰 郭海科 +1 位作者 gerd u auffarth 张洪洋 《眼科研究》 CSCD 北大核心 2010年第4期356-359,共4页
目的建立光路追迹法计算人工晶状体屈光力的方法,探讨其对角膜屈光手术后人工晶状体屈光力计算的准确性。方法根据眼屈光间质的特点以专业光学设计软件Zemax建立人工晶状体眼模型。对25例角膜屈光手术后白内障患者进行回顾性研究,以Orbs... 目的建立光路追迹法计算人工晶状体屈光力的方法,探讨其对角膜屈光手术后人工晶状体屈光力计算的准确性。方法根据眼屈光间质的特点以专业光学设计软件Zemax建立人工晶状体眼模型。对25例角膜屈光手术后白内障患者进行回顾性研究,以OrbscanⅡz或C-Scan测量角膜地形图,获得角膜前表面曲率,以IOL-Master测量眼轴长度。将所得参数及人工晶状体的参数输入光学设计软件Zemax,建立人工晶状体眼的光学模型,计算白内障手术后眼的屈光状态。以手术实际屈光状态为标准,计算二者间的差异为预测误差及预测误差的绝对值为绝对预测误差。统计学分析预测误差与绝对预测误差的平均值、标准差及分布。结果光路追迹法的预测误差为-1.09~1.91 D,平均预测误差为(0.28±0.73)D;绝对预测误差为0.01~1.91 D,平均绝对预测误差为(0.63±0.45)D。绝对预测误差≤0.5 D者9例(36%),0.5 D<绝对预测误差≤1.0 D者12例(48%),1.0 D<绝对预测误差≤1.5 D者3例(12%),1.5 D<绝对预测误差≤2.0 D者1例(4%),绝对预测误差≤1.0 D者21例(84%)。结论光路追迹法是以人工晶状体眼为光学模型计算人工晶状体的屈光力,可对计算角膜屈光手术后人工晶状体屈光力进行较为准确的计算。 展开更多
关键词 光路追迹 人工晶状体 屈光力计算 角膜屈光手术
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