Viscus

(vis'-kus). An; closed within either of the four great cavities, tfl cranium, thorax, abdominal cavity, or pelvis; brain, intestine, spleen, etc. bladder, uterus, lungs, Hvei /ishucki (vis-huk'-e). Synonym of Asiatic 'era among Hindoo physicians, /isibility (viz-ib-il'-it-e). ability of being seen, /ision yisio; videre, to see. I. Sight; acuity of visual power. See also, Acutene . 2. A visual hallucination, or illusion. V., Binocular. i See Binocular. V., Central, direct vision, or vision when the image falls on the fovea central is. V. for Color, pertains to the chromatic sense. V., Direct, i that when the image is formed at the macula. V., Double. See Diplopia . V., Field of. See Field. V. for Form, the acutene of vision with white light. V., Indirect, that when the image is formed upon the peripheral portions of the retina. V., Peripheral, that when the image is not formed at the macula. V., Qualitative, vision in which there is ability to distinguish objects. V., Quantitative, mere perception of light. V., Solid, or V., Stereoscopic, the visual perception of the third dimens'on of space, or the perception of relief or depth of objects obtained by binocular vision. See He rings riment. V., Triple. See Triplopia .