| 词汇 | optic-disc |
| 释义 | optic disc noun[ C ] anatomy specialized(alsooptic disk)uk /ˌɒp.tɪk ˈdɪsk/ us /ˌɑːp.tɪk ˈdɪsk/ a small area at the back of the eye where the optic nerve joins the back of the retina(= the area of the back of the eye that receives light and sends pictures to the brain): The optic disc is nonpigmented and insensitive to light, and is also known as the blind spot. Glaucoma is a group of eye diseases in which rising inner-eye pressure causes damaging changes to the optic disc. If the optic disk looks suspicious for glaucoma, then we proceed with visual field testing. The optic disk is usually easily recognizable as a yellowish, slightly oval structure. Optic disc swelling was noted in 7 of 8 patients with unilateral vision loss. The eye & surrounding area beadily beetling canthus chiasm chiasma compound eye eyeball eyelid glassy limbus macula macula lutea macular monobrow optic nerve suborbital superciliary supraoptic supraorbital tear duct |
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