微视野计的临床应用

Clinical practice of microperimetry

微视野计是一种新型的评估视觉功能的技术,它作为一种非侵入性方法用来分析黄斑中心凹及旁中心凹不同区域的视网膜光敏感度和固视位置及其稳定性。与标准自动视野计相比,微视野计提供了一些独特的功能,它把解剖学和功能结果直接联系起来。它不仅能成像眼底,同时结合一个眼位追踪系统来校正固视缺失的刺激位置,并且可以确定任何优选的视网膜位点。微视野计是目前临床评估黄斑退行性疾病中残余视力和视觉功能的重要检查,特别是地图样萎缩。作为一种可靠的功能测量方法,微视野计越来越多地被临床用来研究地图样萎缩以及其他黄斑退行性疾病。

Microperimetry is a new technique for evaluating visual function. It is used as a non-invasive method to analyze retinal sensitivity, fixing position and stability in different areas of macular fovea and parafovea. Compared with standard automated perimetry, microperimetry offers several unique features. It simultaneously images the fundus, incorporates an eye-tracking system to correct the stimulus location for fixation loss, and identifies any preferred retinal loci. Microperimetry is currently the clinical investigation of choice to assess residual visual functions and functional vision in macular degenerative diseases, especially geographic atrophy. There is an increasing popularity to employ microperimetry in clinical trials investigating new treatments for geographic atrophy, as well as other macular degenerative diseases, as a reliable functional outcome measure.