非球面人工晶状体

intraocular lens

非球面人工晶状体插图

产品由人工晶状体和预装式推注器组成。人工晶状体由疏水性丙烯酸酯类材料制成,添加紫外吸收剂,由晶状体主体、支撑襻两部分组成,其中襻与晶状体主体材质相同,为单件式结构。产品为单焦、非球面设计,前表面为非球面,后表面为球面。光学区边缘采用360度连续直角方边设计,L襻型,光焦度范围为+5.0D至+30.0D,光焦度的间隔为0.5D;预装推注器由外壳、装载仓、推注杆、胶塞、导入头五部分组成。产品经环氧乙烷灭菌,一次性使用。货架有效期为3年。

适用范围:该产品适用于成年人白内障摘除手术后无晶状体眼的视力矫正。

型号:ASOB55LP、ASOB58LP、ASOB60LP;

规格:光焦度范围:+5.0D~30.0D,光焦度间隔:0.5D。

禁忌内容或者注意事项详见说明书。

产品性能和结构:

非球面人工晶状体为预装式非球面后房人工晶状体,由人工晶状体和预装式推注器组成。

人工晶状体由疏水性丙烯酸酯类材料制成,添如紫外吸收剂,由晶状休主体、支撑襻两部分组成,其中襻与晶状体主体材质相同,为单件式结构,产品为单焦、非球面设计,前表面为非球面,后表面为球面。其光学部非球面设计可以产生负球差,用以补偿人眼的正球面相差,光学区边缘采用360度连续直角方边设计,L襻型,光焦度范围+5.00D至+30.0D,光焦度的间隔0.5D。

预装推注器由外壳、装载仓、推注杆、胶塞、导入头五部分组成。

人工晶状体在0.9%的氧化纳盐溶液中测量,其光谱透射比应符合如下要求:

a)在光谱420nm~1100nm的透射比≥90%

b)人工晶状体截止波长(透射比10%处)≥360mm。

产品成像质量通过调制传递函数(MTF)表达。

英文介绍

An intra – ocular lens (IOL) is a medical device designed to replace the natural lens of the human eye. It is mainly used in ophthalmic surgeries, especially in cataract surgery.

  • Structure and Material:IOLs are usually made of high – quality optical materials, such as acrylic, silicone or polymethyl methacrylate (PMMA). They have a precise optical structure, which is designed to focus light onto the retina, just like the natural lens does.
  • Types:There are various types of IOLs. Monofocal IOLs are the most common, which can only provide clear vision at a single distance. Multifocal IOLs, on the other hand, can offer both near and far vision, allowing patients to reduce their dependence on glasses. There are also toric IOLs, which are used to correct astigmatism, and accommodating IOLs, which are designed to mimic the natural accommodation function of the eye.
  • Function and Significance:The main function of an IOL is to restore the eye’s refractive ability. After the natural lens is removed due to disease, the IOL can replace it, enabling patients to regain clear vision and improve their quality of life. It is a key factor in the success of cataract surgery and has brought great benefits to millions of ophthalmic patients worldwide.

中文介绍

人工晶状体是一种旨在替代人眼自然晶状体的医疗器械,主要用于眼科手术,尤其是白内障手术。

  • 结构与材料:人工晶状体通常由高品质的光学材料制成,如丙烯酸、硅酮或聚甲基丙烯酸甲酯(PMMA)。它们具有精确的光学结构,其设计目的是将光线聚焦到视网膜上,就像自然晶状体一样。
  • 类型:人工晶状体有多种类型。单焦点人工晶状体是最常见的,它只能在单一距离提供清晰的视力。而多焦点人工晶状体则可以提供近视力和远视力,使患者减少对眼镜的依赖。还有散光人工晶状体,用于矫正散光,以及可调节人工晶状体,其设计目的是模拟眼睛的自然调节功能。
  • 功能与意义:人工晶状体的主要功能是恢复眼睛的屈光能力。当自然晶状体因疾病被摘除后,人工晶状体可以替代它,使患者重获清晰视力,提高生活质量。它是白内障手术成功的关键因素,为全球数百万眼科患者带来了巨大益处。