又称副轴(secondary axis)、视线(visual line)、黄斑(节点)轴(macular axis)。自注视点通过结点与黄斑中心窝的连线，称视轴。光轴与视轴并不完全符合。视轴为一副轴，在光轴的鼻侧遇到角膜，二轴成4。~5。之角。
n. boresight
misc. optical axis ; line of distance ; rhabdom
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了解徒手作剖视草图和剖视轴测图技能。
Understand freehand sketching methods and axonometric drawing methods of sections.
结果术后全部术眼视轴透明，人工晶状体在位。
Results The visual axis were clear and IOLs in position in all operation eyes.
通过数学推导，由舰船摇摆引起的视轴附加角速度公式。
The expressions of LOS add-angle velocity begotten by ship-swaying is introduced through math deduction.
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