Van Blokland G J, Verhelst S C
J Opt Soc Am A. 1987 Jan;4(1):82-90. doi: 10.1364/josaa.4.000082.
We have applied Mueller matrix ellipsometry to assess the change in the state of polarization of a light beam that has double passed the ocular media and is scattered at the fundus of the human eye in vivo. At several positions in the pupil plane, which together cover the area of the dilated pupil, Mueller matrices are assessed. From them the magnitude of the retardation and the orientation of the eigenvector are calculated. The properties of the retardation process are surveyed by measuring the retardation along a horizontal meridian as a function of wavelength, density of visual pigment, and location of retinal fixation. Furthermore, photographs are taken from the polarization patterns on the iris with circularly polarized light. We posit that the cornea behaves as a biaxial crystal with its fastest principal axis normal to its surface and its slowest nasally downward. The retardation of light by a model eye with such a cornea is calculated, and the results are compared with the data.
我们已应用穆勒矩阵椭圆偏振测量法来评估光束在人眼活体中双程穿过眼介质并在眼底散射后偏振态的变化。在瞳孔平面的几个位置（这些位置共同覆盖散瞳区域）评估穆勒矩阵。从这些矩阵中计算出延迟量的大小和特征向量的方向。通过测量沿水平子午线的延迟量作为波长、视色素密度和视网膜注视位置的函数，来研究延迟过程的特性。此外，用圆偏振光拍摄虹膜上的偏振图案照片。我们假定角膜表现为双轴晶体，其最快主轴垂直于其表面，最慢主轴在鼻侧向下。计算具有这种角膜的模型眼的光延迟，并将结果与数据进行比较。
