Category: V

  • Visual screening

    A health screening procedure to detect the presence of visual problems.  

  • Visual purple

    A pigment formed in the retina of the eye by the action of light on rhodopsin. A natural pigment found in the retina that turns yellow when exposed to light. It is a protein closely associated with vitamin A. This pigment is also known as erythropsin or rhodopsin.  

  • Visual perception area

    An area in the temporal lobe of the cerebral cortex where visual stimuli are interpreted.  

  • Visual disorder

    A dysfunction of the eyes, optic nerve, or perceptual center of the brain.  

  • Visual discrimination

    The act of distinguishing one visual stimulus from another.  

  • Visual cliff

    A device for assessing depth perception in young organisms consists of a glass surface that extends over an apparently deep side and an apparently shallow side.  

  • Visual acuity

    Sharpness of vision, most often determined by use of the Snellen chart. The ability to distinguish details and shapes. Measurement of visual acuity is part of a standard eye examination. Sharpness of vision. How well one sees things depends on how well they are illuminated and upon such factors as practice and motivation, but the…

  • Viscus

    An organ of the body. Any internal organ enclosed within a cavity such as the thorax or abdomen. A sizable internal organ located within one of the body cavities; it is the singular form of “viscera.” A substantial organ located within one of the body’s cavities, representing the singular form of viscera.  

  • Viscerotonic

    The temperament originally assumed to be associated with an endomorphic body type.  

  • Visceratonia

    An endomorphic body type.