Mixed reality applications require natural visualizations. Ray tracing is one of the candidates for this purpose. Real-time ray tracing is slowly becoming a reality in consumer market mixed and virtual reality. This is happening due to development in display technologies and computer hardware. Some of these examples are foveated rendering enabled high resolution displays, like Varjo mixed reality headset, and parallel computing enablers, like GPUs getting ray tracing hardware acceleration enablers, such as for example Nvidia's RTX. Currently, the challenge in ray tracing is resource need especially in mixed reality where low latency is wanted and with human eye resolution where high resolution needs are obvious. In this paper, we design and implement a novel foveated ray tracing solution called Human Eye Resolution Ray Tracer (HERR) that achieves real-time frame rates in human eye resolution in mixed reality.