Foveation and (de)focus are two important visual factors in designing near eye displays. Foveation can reduce computational load by lowering display details towards the visual periphery, while focal cues can reduce vergence-accommodation conflict thereby lessening visual discomfort in using near eye displays. We performed two psychophysical experiments to investigate the relationship between foveation and focus cues. The first study measured blur discrimination sensitivity as a function of visual eccentricity, where we found discrimination thresholds significantly lower than previously reported. The second study measured depth discrimination threshold where we found a clear dependency on visual eccentricity. We discuss the study results and suggest further investigation.

中文翻译：

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偏心对模糊和深度感知的影响

聚焦和（散焦）是设计近眼显示器时两个重要的视觉因素。偏心可以通过降低朝向视觉边缘的显示细节来减少计算量，而焦点提示可以减少散度与容纳的冲突，从而减轻近眼显示器使用中的视觉不适。我们进行了两个心理物理实验，以研究对性和焦点线索之间的关系。第一项研究测量了模糊辨别灵敏度与视觉偏心率的关系，我们发现辨别阈值明显低于先前报道的阈值。第二项研究测量了深度辨别阈值，在该阈值中我们发现明显依赖于视觉离心率。我们讨论研究结果并建议进一步调查。