| 单词 | optic disc |
| 释义 | > as lemmasoptic disc optic disc n. Anatomy a slightly raised pinkish white disc on the retina at the point of entry of the optic nerve, lacking visual receptors and so forming a blind spot. ΚΠ 1858 J. Hogg Ophthalmoscope (ed. 2) 43 The turbidity clears up gradually, and in from two to six weeks we begin to see the optic disc as through a fog. 1934 Science 14 Dec. 547/2 An elimination of the BMn-chromosome from a cell at a suitable time and place in the optic disk of the larva results in a female fly with a mosaic eye. 1995 Sci. News 25 Feb. 116/1 The disorder..is characterized by sudden loss of vision due to a painless swelling of the optic disc. < as lemmas |
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