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• 光轴和视轴<br />
眼球的光学对称轴为<br />
光轴。<br />
人为了观察得清晰,<br />
常自动地将黄斑部对准观<br />
察物。所以观察方向是黄<br />
斑和眼节点间的连线,此<br />
连线称为视轴。<br />
视轴和光轴相交约成<br />
5°角。<br />
PDF 文件使用 "pdfFactory Pro" 试用版本创建 www.fineprint.cn<br />
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