Vertebrate visual optics: ontogeny, phylogeny and function of the lens

脊椎动物视觉光学：个体发育、系统发育和晶状体功能

• 批准号: 9747-2010
• 负责人: Sivak, Jacob
• 金额: $ 4.44万
• 依托单位: University of Waterloo
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=544650
• 关键词: Vertebrate; visual; optics; ontogeny; phylogeny

The vertebrate eye consists of two refractive components, the crystalline lens and the cornea, which focus light on the retina. The lens is cellular and ectodermal and develops through life. Lens optics is governed by shape and refractive index distribution as well as by whether accommodation is brought about by changes in lens shape, as in terrestrial species, or through lens movement, as in aquatic animals. The cornea is the dominant refractive structure in air but makes little or no refractive contribution in water. This research represents an effort to understand a) the effect of the visual environment on the refractive properties of the eye b) the optical limitations imposed by vertebrate ocular development and c) how vertebrates cope with the visual demands of their life histories.

脊椎动物的眼睛由两个折射部件组成，即晶状体和角膜，它们将光线聚焦在视网膜上。晶状体由细胞和外胚层组成，并在一生中不断发育。 晶状体光学受形状和折射率分布的影响，以及调节是由晶状体形状的变化（如陆地物种）还是通过晶状体移动（如水生动物）引起的。 角膜是空气中主要的屈光结构，但在水中的屈光贡献很小或没有。这项研究旨在了解a）视觉环境对眼睛屈光特性的影响b）脊椎动物眼睛发育所施加的光学限制以及c）脊椎动物如何应对其生活史的视觉需求。