Abstract:

Macular diseases always result in central scotoma. In such cases, formation of substitute peripheral retinal plays an important role in eccentric viewing to avoid visual difficulties. Researches have been accomplished to prove that adopting a peripheral retinal location for fixation (preferred retinal locus, PRL) helps improving visual activities such as reading and searching. Thus it’s necessary to conduct perceptual training in patients using non\|foveal location on the retina. One of the key, yet unresolved questions related to central scotoma is what determines the location of the PRL. The purpose of this review is to summarize key findings on explanation for location of PRL, including function\|driven explanation of PRL, performance\|driven explanation of PRL and retinotopy\|driven explanation of PRL. (Int Rev Ophthalmol, 2016, 40: 409-413)