Human eyes are known to exhibit birefringence due to the anisotropic structure of collagen fibrils in the cornea. This birefringence has been suggested as a feature which can be used for medical diagnoses as well as computer vision applications. However, only partial polarimetric eye measurements appear in the literature. The primary contribution of this work is full Mueller matrix images of the left eyes of 20 individuals. An existing dual-rotating retarder Mueller polarimeter was modified to address the challenges of in vivo eye measurements. These Mueller images revealed significant circular retardance that has not been previously reported. This result demonstrates the importance of full Mueller characterization as a step to identify task-relevant polarimetric features.
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