Evaluation of point spread function of the peripheral visual field in human eye

人眼周边视野点扩散函数评价

• 批准号: 20791274
• 负责人: YAMAGUCHI Takefumi
• 金额: $ 2.08万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20791274/
• 关键词: 眼光学; 高次収差; 周辺視野; 光学特性; 水晶体; 眼内レンズ; 網膜像; 球面収差; 低次収差; 視機能; 角膜形状異常眼

We evaluated the peripheral retinal image quality in relation to phakic and pseudophakic eyes. It has been widely assumed that the human crystalline lens exists solely for accommodation, but this assumption has not fully been tested in a manner that takes account of peripheral optics, i.e., the defocus component and higher-order aberrations. The difference in relative peripheral defocus seems to be even larger in eyes with artificial IOLs than with crystalline lenses. We compared the best off-axis PSFs of human lenses with those of artificial IOLs, and our results suggest the importance and a heretofore unrevealed physiological role of the human lens; namely, the human lens acts as a buffer to protect against blurring in the peripheral vision in terms of defocus and aberration.

我们评估周边视网膜图像质量与有晶状体眼和人工晶状体眼的关系。人们普遍认为，人类晶状体透镜的存在仅仅是为了调节，但是这种假设还没有以考虑周边光学的方式得到充分的检验，即，散焦分量和高阶像差。相对周边散焦的差异似乎在人工晶状体眼中比在晶状体眼中更大。我们比较了人类晶状体与人工晶状体的最佳离轴PSF，我们的结果表明了人类透镜的重要性和迄今为止尚未揭示的生理作用;即，人类透镜在散焦和像差方面充当缓冲器以防止周边视觉模糊。

项目成果

The effect of spherical aberration on visual function under photopic and mesopic condition after cataract surgery

白内障术后明视和中间视觉条件下球差对视功能的影响

• 发表时间: 2009
• 期刊: J Cataract Refract Surg 35
• 作者: Yamaguchi T;et al.
• 通讯作者: et al.

Feasibility of spherical aberration correction with aspheric intraocular lenses in cataract surgery based on individual pupil diameter

• DOI: 10.1016/j.jcrs.2009.05.031
• 发表时间: 2009-10-01
• 期刊: JOURNAL OF CATARACT AND REFRACTIVE SURGERY
• 影响因子: 2.8
• 作者: Yamaguchi, Takefumi;Negishi, Kazuno;Tsubota, Kazuo
• 通讯作者: Tsubota, Kazuo

Effect of anterior and posterior corneal surface irregularity on vision after Descemet-stripping endothelial keratoplasty

• DOI: 10.1016/j.jcrs.2008.11.062
• 发表时间: 2009-04-01
• 期刊: JOURNAL OF CATARACT AND REFRACTIVE SURGERY
• 影响因子: 2.8
• 作者: Yamaguchi, Takefumi;Negishi, Kazuno;Tsubota, Kazuo
• 通讯作者: Tsubota, Kazuo

Effect of spherical aberration on visual function under photopic and mesopic conditions after cataract surgery

• DOI: 10.1016/j.jcrs.2008.09.012
• 发表时间: 2009-01-01
• 期刊: JOURNAL OF CATARACT AND REFRACTIVE SURGERY
• 影响因子: 2.8
• 作者: Yamaguchi, Takefumi;Dogru, Murat;Negishi, Kazuno
• 通讯作者: Negishi, Kazuno

Factors affecting contrast sensitivity with the Artisan phakic intraocular lens for high myopia.

影响高度近视 Artisan 有晶状体眼人工晶状体对比敏感度的因素。

• 发表时间: 2009
• 期刊: Journal of refractive surgery
• 影响因子: 2.4
• 作者: Takefumi Yamaguchi;K. Negishi;Naoko Kato;Hiroyuki Arai;I. Toda;K. Tsubota
• 通讯作者: K. Tsubota