优选的视网膜注视点研究进展

Study on preferred retinal locus

优选的视网膜注视点（PRL）主要应用于黄斑受损的低视力患者视功能康复训练。近年来PRL训练成为低视力康复研究的热点，研究者利用患者中心视力损害后的残存低视力进行PRL训练，可以逐步改善患者的视功能，从而提高患者的生活质量。因此有必要就PRL的定义、定位、特点、训练方法及其临床意义进行综述。

Preferred retinal locus （PRL） is always found in the age-related macular degeneration and other maeular damages in patients with low vision, and it is a very important anatomic position in patients with central vision impairment to achieve the rehabilitation. In recent years, the training of preferred retinal locus （PRL） has become a research hotspot of low vision rehabilitation, it can clearly improve functional vision and quality of life. The authors reviewed relevant literatures, and summarized the definition, position, characteristics, training and clinical implications of the PRL.