| 摘要 |
<p>The magnitude and axial orientation of birefringence of the anterior and the posterior segments of the human eye (11) are determined. The anterior segment includes essentially the combined birefringence of the cornea (10) and the crystalline lens (14), and the posterior segment includes regions at the fundus. The polarization preserving and birefringence characteristics of selectable regions of the fundus are used in the present invention. The optical axis and the magnitude of the birefringence of the anterior segment is first determined, then the birefringence of the anterior segment is nulled by a variable retarder (37). The birefringence of the anterior segment. The apparatus and method are applicable to the measurement of the birefringence of the retinal nerve fiber layer (18) at the peripapillary region and the birefringence of the Henle fiber layer (20) at the macular region of the retina (15).</p> |
