In-vivo, High Contrast Imaging of the Human Rod Photoreceptor Mosaic

人杆光感受器马赛克的体内高对比度成像

• 批准号: 8326718
• 负责人: Nathan Doble
• 金额: $ 30万
• 依托单位: NEW ENGLAND COLLEGE OF OPTOMETRY
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-09-01 至 2013-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8326718
• 关键词: Affect; Age related macular degeneration; Animal Model; Blindness; Cell Density; Cells; Clinical; Clinical Trials; Complement; Dark Adaptation; Data; Development; Disease; Eye; Fundus; Goals; Human; Image; Imagery; Imaging technology; Individual; Lead; Leukocytes; Life; Masks; Measures; New England; Optics; Optometry; Outcome Measure; Patients; Performance; Pharmaceutical Preparations; Pharmacotherapy; Process; Property; Reporting; Resolution; Retina; Retinal; Retinal Cone; Retinal Diseases; Retinitis Pigmentosa; Signal Transduction; Simulate; Structure; Structure of retinal pigment epithelium; System; Techniques; Testing; Time; Work; adaptive optics; arm; cell type; college; density; disease diagnosis; improved; in vivo; optical imaging; receptor; receptor coupling; retinal rods; success; tool

Project Summary The goal is to enhance the resolution and contrast of in-vivo images of the rod photoreceptor mosaic taken with high resolution adaptive optics (AO) equipped retinal cameras. There has been great success in imaging other cell types such as the cones, retinal pigment epithelium and leukocytes cells but to date nobody has reported in-vivo evidence for the rods. The project will examine advanced optical techniques that can be combined with AO to further improve the contrast of the retinal images at the spatial scale of the rods and foveal cones. These may be advanced masks to suppress unwanted structure in the images complemented with approaches such as using the Stiles- Crawford effect and deconvolution. Achieving this goal will allow one, for example, to count individual rod cells and calculate cell densities which can then be compared to histological measures. Initially, young, normal subjects will be imaged to refine and optimize the new imaging approaches. As the work progresses, the study will examine diseases that target the rod cells such as retinitis pigmentosa and age related macular degeneration and relate the changes observed to standard clinical tests. This work will lead to better understanding of retinal structure in both normal and diseased eyes. With new drug treatments being developed in animal models, the direct non-invasive imaging of rod cells would provide an important outcome measure when these therapies are transitioned into human clinical trials.

项目总结