Advanced Bifocal Contact Lens

高级双焦点隐形眼镜

• 批准号: 6690238
• 负责人: ROBERT B MANDELL
• 金额: $ 46.69万
• 依托单位: SOFTFOCAL COMPANY, INC.
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-30 至 2005-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6690238
• 关键词: bioengineering /biomedical engineering; clinical research; computer program /software; computer system design /evaluation; contact lens; eye; human subject; optics; vision aid; vision disorders

DESCRIPTION (provided by applicant): The long-term objectives of this project are to: 1) provide a soft bifocal contact lens that will overcome the drawbacks of current soft bifocal contact Ienses; 2) provide a soft bifocal contact lens that will have better image forming properties than that of previous soft bifocal contact lenses and give optimal vision to the wearer for viewing both distance and near objects; 3) provide a soft bifocal contact lens that is relatively inexpensive to manufacture, using air-bearing, computer controlled lathing or molding techniques; 4) expand the number of patients who are able to wear bifocal contact lenses. The specific aims of this project are to: 1) transform the design for a newly patented rigid gas permeable bifocal contact lens into a design that is suitable for a soft contact lens; 2) produce a soft bifocal contact lens that will take advantage of the anatomical structure of the eye and lids for purposes of generating a vertical shifting or translational movement, so as to present one or another optical power to the eye at the desired time; 3) develop software and manufacturing techniques for the proposed lens construction that can be executed using air-bearing computer-controlled lathes. The major effort of this project will be directed towards programming and test manufacturing a recently developed rigid bifocal contact lens design, modified to produce an advanced soft bifocal contact lens. The proposed soft bifocal contact lens design has a distinct advantage over present lenses because of two features: 1) spherical optics for both distance and near lens power areas connected by a unique transition curve that eliminates visual image jump based on a modified form of monocentricity and 2) lens design features that provide controlled lens translation on the eye in order to place the desired lens power area in front of the entrance pupil of the wearer at the desired time.

描述（由申请人提供）：该项目的长期目标是： 1)提供一种软性双焦点隐形眼镜，其克服现有软性双焦点隐形眼镜的缺点； 2)提供一种软性双焦点隐形眼镜，其具有比先前的软性双焦点隐形眼镜更好的成像特性，并为佩戴者提供观看远处和近处物体的最佳视力； 3)提供一种使用空气轴承、计算机控制车床或模制技术制造相对便宜的软双焦隐形眼镜； 4）扩大能够佩戴双焦点隐形眼镜的患者数量。 该项目的具体目标是：1）将新获得专利的硬性透气双焦点隐形眼镜的设计转变为适用于软性隐形眼镜的设计； 2)生产一种软性双焦点隐形眼镜，其将利用眼睛和眼睑的解剖结构来产生垂直移位或平移运动，以便在期望的时间向眼睛呈现一种或另一种光焦度； 3) 开发可使用空气轴承计算机控制车床执行的拟议镜头结构的软件和制造技术。 该项目的主要工作将针对最近开发的刚性双焦点隐形眼镜设计的编程和测试制造，并进行修改以生产先进的软性双焦点隐形眼镜。 所提出的软双焦隐形眼镜设计比现有镜片具有明显的优势，因为有两个特点：1）远用和近用镜片屈光力区域的球面光学器件通过独特的过渡曲线连接，消除了基于改进形式的单中心性的视觉图像跳跃，并且2) 镜片设计特征，提供在眼睛上的受控镜片平移，以便在期望的时间将期望的镜片屈光力区域放置在佩戴者的入射瞳孔前面。