ABSTRACT

Central vision loss (CVL) caused by macular damage generally disables common daily tasks, which cannot be reversed by present treatments. Fortunately, it has been found that biofeedback training by inducing or reinforcing preferred retinal locus (PRL) as an eccentric fixation reference contributes to the improvement of visual performance in patients with CVL. However, the clinical application is still under controversy due to poor knowledge of its fundamental and inconsistent practical standards. This article aims to summarize the possible rationale for the development, location, re-location and evaluating indicators of PRL, and the general apparatus, protocol, and outcome of biofeedback PRL training.

摘要

由黄斑损伤引起的中心视力丧失 (CVL) 通常会使日常工作无法正常工作，目前的治疗方法无法逆转这种情况。幸运的是，已经发现通过诱导或加强首选视网膜轨迹 (PRL) 作为偏心注视参考的生物反馈训练有助于改善 CVL 患者的视觉表现。然而，由于对其基本知识缺乏了解且实践标准不一致，临床应用仍存在争议。本文旨在总结 PRL 的开发、定位、重新定位和评估指标的可能原理，以及生物反馈 PRL 培训的一般设备、协议和结果。