disparity


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Related to disparity: desperateness, Health disparity

dis·par·i·ty

(dis-par'i-tē),
The condition of being disparate.
[L. dispar, dissimilar]

disparity

The condition of being unequal or totally different. The word is used mainly to refer to non-corresponding points in the retina. See retinal disparity; retinal corresponding points.
binocular disparity See stereoscopic visual acuity; retinal disparity; depth perception.
crossed disparity Retinal disparity induced by an object nearer to the eyes than the point of fixation and focused on the temporal retina. Thus, the image received by the right eye appears to the left and that received by the left eye appears to the right. Syn. crossed retinal disparity.
fixation disparity See retinal disparity.
retinal disparity Binocular vision in which the two retinal images of a single object do not fall on corresponding retinal points, i.e. when the object lies off the horopter. If, however, the two retinal images still fall within Panum's area, the object will still be seen single. At the fixation point this may cause over- or under-convergence of the eyes. This particular case is called fixation disparity (or retinal slip). The presence of fixation disparity often indicates that binocular vision is under stress and the patient has an uncompensated heterophoria. Optical correction or orthoptic exercises usually eliminate the symptoms. Fixation disparity can be measured either (1) directly (e.g. Disparometer, Wesson Fixation Disparity Card, both consisting of targets with pairs of vernier lines of various angular separation, each line being seen by one eye through polarizing filters), or (2) indirectly as an associated phoria (e.g. Mallett fixation disparity unit). Syn. binocular disparity. See stereoscopic visual acuity; anaglyph; esodisparity; exodisparity; fusional movements; depth perception; random-dot stereogram; stereopsis; stereotest.
uncrossed disparity Retinal disparity induced by an object farther away from the eyes than the point of fixation and focused on the nasal retina. Thus, the image received by the right eye appears to the right and that received by the left eye appears to the left. Syn. uncrossed retinal disparity.
vergence disparity See motor fusion.
References in periodicals archive ?
The standard normal cumulative distribution of-0.408 is 0.342%, (89) meaning that there is only a 0.342% chance that the observed disparity between the average venire and the community as a whole happened by chance--a very unlikely result.
Management should adapt different approaches to deal with disparity, when deprived people join their organization.
"It is natural for the number of lawmakers to be in proportion with the population in a democratic, advanced country and it is only in Japan that such a disparity exists," Kanao said.
(39) So, in the physical activity example above, the "amenable to human intervention" theory would determine that differences in physical activity levels based on neighborhood are unjust, irrespective of the recreational facilities available, because the disparity would be susceptible to human intervention in the form of programs designed to increase physical activity.
The book seems most appropriate for higher level students of medicine, public health, and health policy, especially those engaging in health disparity research.
Over the two and a half decades of the study, men became increasingly less likely to be employed and reach middle or upper-income levels--both of which are associated with less health disparity.
"Where the disparity in health status for Maori is significant, we expect to see measures and targets for Maori, with trend data, in the annual report of the DHB," the report stated.
An important by-product of escalating CEO compensation is the disparity in pay with other employees of the firm and particularly with other executives of the firm who work alongside the CEO.
Johnson recommended collecting data on race, ethnicity and preferred language and making sure that it is documented across the organization and making equity and disparity issues an integral component of quality improvement efforts.
CDC used the population attributable proportion (PAP) disparity measure to describe the proportional decrease in HIV infection among black and white women combined that would be realized if the group with the higher rate (blacks) had the same rate as did the group with the lower rate (whites) (2).