Retinal nerve fibers exit the eye through the optic nerve, located nasally and on the same plane as the anatomical center of the retina. There is no retinal tissue overlying the optic nerve head. The optic nerve head or optic disc is oval in shape and measures approximately 1.75 mm. vertically and 1.5 mm horizontally.
Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning. the strength and power that are considered typical qualities of a man, especially sexual energy virility symbol: His car is a red turbo-charged Porsche, the classic virility symbol. Synonyms and related words. Physical strength:strength, force, energy...
virulence. the degree of pathogenicity of a microorganism as indicated by case fatality rates and/or its ability to invade the tissues of the host; the competence of any infectious agent to produce pathologic effects. adj., adj virÂ´ulent.-And now, the landlady coming into the room, Mrs Waters fell upon her with the utmost virulence, saying, She thought herself in a sober inn, and not in a bawdy-house; but that a set of villains had broke into her room, with an intent upon her honour, if not upon her life; and both, she said, were equally dear to her.