What's the difference between horopter and vision?
Horopter
Definition:
(n.) The line or surface in which are situated all the points which are seen single while the point of sight, or the adjustment of the eyes, remains unchanged.
Example Sentences:
(1) An additional subject showed irregular alterations in vergence posture during nonius horopter measurements.
(2) The results of our physiological analysis in the burrowing owl (Speotyto cunicularia) also reveal a tilted horopter in this terrestrial avian species.
(3) Determining the mean of several sets of replications smoothed out the horopter.
(4) The depth data suggests that, at least in the near field, the zero value for relative depth lies at the same absolute depth as the stereo horopter (locus of zero stereo disparity).
(5) In addition to localized irregularities in the horopter locus, shifts in fixation disparity produced regional distortions of the horopter.
(6) For normal subjects with good stereopsis the equidistance (stereoscopic distance matching) horopter shape was altered with the application of lateral prism.
(7) Regardless of spatial frequency, stereo sensitivity declined rapidly as stimuli were presented away from the horopter.
(8) Fixation disparity values derived from horopter measurements are compared with those determined using the disparometer on seven subjects wearing lateral prisms.
(9) Horopters in exotropes appear to be very similar to those found in normal binocular subjects.
(10) The width of these disparity tuning functions varied from 5 arc min for adaptation at the horopter to 20 arc min for adaptation at 20 arc min disparity.
(11) However, the mean standard error of the means of several replications produced a more nearly smooth horopter locus.
(12) There is a gradual increase in stereo-threshold as the targets are moved out along the horopter, away from the fixation point into the peripheral visual field.
(13) Relative depth discrimination is, then, operative over a very wide band of visual space around the horopter (about 3 deg of absolute disparity in the centre of the visual field and even more in the periphery).5.
(14) The horopter (the locus of targets that appear to be fused binocularly) is the region of maximum stereoacuity and this does not necessarily coincide with the Vieth-Müller circle (the locus of zero geometric or absolute disparity).
(15) We have undertaken a determination of the vertical horopter in two species by simultaneously mapping the receptive field positions of binocular cortical neurons at various elevations along the zero azimuthal meridians.
(16) Several up-down illusions involving apparent distance may well be due to these disparities, including (a) backward tilt of the apparent vertical and of the vertical horopter, (b) the 'soup-bowl sky' illusion, and (c) the 'diverging sunbeams' illusion.
(17) Plotting the mean and standard error of the means of these seven sets of data produced a smoothing out of the horopter locus.
(18) Since the two eyes' zero meridians define physiologically the positions of corresponding retinal points, this out-torsion results in a vertical horopter in the mid-sagittal plane which is tilted away from the alert, unparalyzed cat.
(19) Such low-frequency, inter-fixational variation in torsional difference between the eyes must produce spurious horizontal disparities in the upper and lower visual fields, and should thereby limit the precision with which the vertical horopter can be evaluated.
(20) The results produced a refined horopter locus and suggested that the so-called Vieth-Mueller circle is an adequate describer of the empirical longitudinal horopter, except in those cases involving uncorrected aniseikonia.
Vision
Definition:
(v.) The act of seeing external objects; actual sight.
(v.) The faculty of seeing; sight; one of the five senses, by which colors and the physical qualities of external objects are appreciated as a result of the stimulating action of light on the sensitive retina, an expansion of the optic nerve.
(v.) That which is seen; an object of sight.
(v.) Especially, that which is seen otherwise than by the ordinary sight, or the rational eye; a supernatural, prophetic, or imaginary sight; an apparition; a phantom; a specter; as, the visions of Isaiah.
(v.) Hence, something unreal or imaginary; a creation of fancy.
(v. t.) To see in a vision; to dream.
Example Sentences:
(1) Clinical signs of disease developed as early as 15 days after transition to the experimental diets and included impaired vision, decreased response to external stimuli, and abnormal gait.
(2) A total of 104 evaluable patients 20-90 years old treated by direct vision internal urethrotomy a.m. Sachse for urethral strictures reported retrospectively via a questionnaire their sexual potency before and after internal urethrotomy.
(3) In the present study, 125 oesophageal biopsies obtained under direct vision at endoscopy from 22 patients with Barrett's oesophagus were systematically studied using fluorescence and peroxidase antiperoxidase single and double-staining immunocytochemical methods employing highly specific antibodies to localize the following peptide-containing cell types in Barrett's mucosa: gastrin, somatostatin, gastric inhibitory polypeptide, motilin, neurotensin and pancreatic glucagon.
(4) At this threshold there was no effect on reducing the rate of visual acuity overreferrals, but ten children with abnormal binocular vision were detected who were not referred by visual acuity criteria.
(5) DATA Modern football data analysis has its origins in a video-based system that used computer vision algorithms to automatically track players.
(6) Case 3 was that of a 70-year-old female with left impaired vision and frontal headache.
(7) While the correlations between speed and accuracy reversed over time, the abnormal vision group began and ended at the most extreme levels, having undergone a significantly more radical shift in this regard.
(8) Adaptation at 10 deg eccentricity yielded slightly higher threshold elevations than for central vision.
(9) The ceremony is the much-anticipated shop window for the Games, and Boyle was brought in to provide the creative vision.
(10) Acini in the parotid gland of the North American mink (Mustela vision) are composed of seromucous cells that contain secretory granules of peculiar morphology.
(11) Drones and helicopter strikes are not equipped with political night-vision.
(12) It is the combination of his company's pan-African and industrialist vision – reminiscent of the aspirations of African independence pioneers like Ghana's Kwame Nkrumah – and its relentless financial growth that has set Dangote apart.
(13) A 40 year old female presented with secondary glaucoma and loss of vision due to anterior pole metastasis of breast carcinoma.
(14) We present a patient with unilateral progressive painless loss of vision leading to optic atrophy and blindness.
(15) Proposed guidelines for future research include the use of conceptual rather than operational definitions of visual spatial ability, greater attention directed at separating spatial from nonspatial task components, and studies examining basic mechanisms underlying spatial vision.
(16) Repeated replacements of keratoprostheses extruded or removed because of complications were possible with restoration of the vision obtained after the first implantation.
(17) Whatever else Scott is about, Waverley ends with a vision of Britishness and a British union.
(18) The external and internal rear-view mirrors of automobiles should be positioned within the binocular field of vision.
(19) We address this issue directly over a 5-log10-unit range of light levels covering scotopic, mesopic, and photopic vision.
(20) Ocular disorders had been found in 62% of the cases, commonly represented by blindness of one eye, decreased vision, papillar edema and eventually by occlusion of the retineal artery.