| VF | 1) Ventricular Fibrillation ? Tx of Ventricular Fibrillation ... |
|---|---|
| Vf | 1) Ventricular flutter 2) Visual field |
| VFD | Visual Field Defect |
| CVF | cardiovascular failure; central visual field; cervicovaginal fluid; cobra venom factor |
| LVF | left ventricular failure; left ventricular function; left visual field; low-voltage fast; low-voltag... |
| visual efficiency | A rating used in computing compensation for industrial ocular injuries, incorporating measurements of central acuity, visual field, and ocular motility. (05 Mar 2000) |
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| visual evoked potential | Voltage fluctuations that may be recorded from the occipital area of the scalp as the result of retinal stimulation by a light flashing at 1/4-second intervals; commonly summated and averaged by computer. (05 Mar 2000) |
| visual extinction | A condition in which individual stimuli are seen correctly, but when the nasal visual field of one eye and the temporal visual field of the fellow eye are stimulated simultaneously, one field is blind. Synonym: visual extinction. (05 Mar 2000) |
| visual image | A collection of foci corresponding to all the luminous points of an object. (05 Mar 2000) |
| visual orbicularis reflex | Contraction of the orbicularis oculi muscle caused by a sudden visual stimulus. See: wink reflex. (05 Mar 2000) |
| visual organ | The eye and its adnexa. Synonym: organum visus, organ of vision. (05 Mar 2000) |
| visual pathway | Neural paths and connections within the central nervous system, beginning with the retina and terminating in the occipital cortex. (05 Mar 2000) |
| visual perception | The selecting and organizing of visual stimuli based on the individual's past experience. (12 Dec 1998) |
| visual pigments | The photopigments in the retinal cones and rods that absorb light and initiate the visual process. (05 Mar 2000) |
| visual projection | A perceptual synthesis involving visual mechanisms. (05 Mar 2000) |
| visual purple | <protein> Light sensitive pigment formed from retinal linked through a Schiff's base to opsin: rhodopsin is an integral membrane protein found in the discs of retinal rods and cones, comprising some 40% of the membrane. Vertebrate opsins are proteins of 38 kD. See: bacteriorhodopsin. (18 Nov 1997) |
| visual receptor cells | The rod and cone cell's of the retina. (05 Mar 2000) |
| visual-spatial agnosia | The inability to localise objects or to appreciate distance, motion, and spatial relationships; caused by lesion in the occipital lobe. Compare: simultanagnosia. (05 Mar 2000) |
| visual threshold | Threshold of visual sensation, the minimal light intensity evoking a visual sensation. Synonym: achromatic threshold, minimum light threshold. (05 Mar 2000) |
| visual violet | A visual pigment, composed of 11-cis-retinal bound to an opsin, found in the cones of the retina. Synonym: visual violet. Origin: G. Ion, violet, + ops, eye, + -in (05 Mar 2000) |
| visual field |
The portion of the environment that the eye sees on fixed forward gaze.
출처: www.ohiohealth.com/healthreference/healthtopics/gl...
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| visual field |
(VIZ-yoo-ul FEELD) Extent of area visible to an eye as it looks straight ahead. Measured in degrees away from direct line of sight.
출처: www.jhu.edu/wctb/coms/booklet/book5.htm
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| visual field |
The area of the external environment that is visible to the eye or eyes at a given position; the field of vision. Visual field is usually measured in degrees of visual angle.
출처: www.hfeconsulting.com/Expert_Witness/GlossaryStoZ....
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| visual field |
The area over which someone can notice an object without moving their eyes or head.
출처: www.ssc.mhie.ac.uk/viscot/gloss.html
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| visual field |
the area or extent of space visible to an eye in a given position of gaze. There is a central visual field--that is directly in front of us, the target at which we are looking, and a peripheral visual field---that which we perceive in our "side vision". The fields of each eye partly overlap. We do not perceive the blind spots from each eye because the area that is missing in one eye is present in the other.
출처: www.eyesinternational.com/eyecare/contacts_termino...
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