[医学]变色人工晶体new.ppt

BCVA (30 Days) Aurium Vs. Acrysof? IQ Natural Vs. Control BCVA Aurium vs. Acrysof IQ Natural vs. Control @ 6 months Aurium with and Without Sun Glasses Acrysof IQ Natural with or without sun glasses 清晰的囊袋 Aurium AcrySof IQ Natural 结论四： 照明强度增加，最佳矫正视力提高 Aurium? 在11 to 366 Lux 时表现得比 Acrysof? IQ Natural 好 在495 to 1000 Lux时, 两种晶体表现都很出色 在户外太阳光下，均有很好的最佳矫正视力 当患者戴上能阻断紫外线的太阳镜时，Aurium 表现得比 Acrysof? IQ Natural 更出色 总结 什么是变色晶体的特性？ 为什么要研发变色晶体？ 它工作么？ 患者能受益那些？ - 大多数情况下保护视网膜 黄昏视和明视下的长处 无风险：色觉和黄昏视觉，生理节律 * * * Five phototchromic intraocular lenses were exposed to photostability conditions equivalent to 20 years in the eye, in accordance with ISO procedures. The five aged and another five unaged lenses were evaluated with a NdYAG laser test. Each intraocular lens was immersed in an optical cuvette containing 2 mL of BSS. Using an energy setting of 5 mJ, the NdYAG laser was focused on the posterior optic surface and each lens was exposed to 50 single pulses, spread evenly over the central optical zone. The IOLs were removed from the cuvette and the balanced saline solution from the aged and unaged lens groups were submitted separately for analysis of the quantity and identity of released substances. The photochromic properties of the lenses were evaluated after laser exposure and compared to unexposed lenses. * * * * * * * * * * * 三个不同地点的太阳光谱 Source: Technical Bulletin LU-0822, paper presented by P. Brennan C. Fedor at Society of Plastics Engineers Automotive RETEC, Nov. 1987 60%的紫外线A可以透过人角膜 Effects of ultraviolet light on the eye: role of protective glasses. Environ Health Perspect 1991; 96:177-184 Transmittance characteristics of ultraviolet and blue light-filtering intraocular lenses. Claudia Brockmann. J Cat. Ref. Surg 2008; 34:1161-1166 2008 进入眼内的光线 光线以不同的入射角度通过3mm瞳孔，进入眼内后产生汇聚 Source: John C. Merrian, “The concentration of light in the human eye” Tr. Am. Ophth. Soc. 94: 803-918, 1996 头顶直射的阳光在晶体后囊膜平面的紫外线A强度 Source: John C. Merrian, “The concen