Stereoscopic acuity - Wikipedia
Stereoacuity is defined as the minimum angle detectable, calculated as the difference between the angles subtended by both positions, A and B. Stereoacuity is possible due to binocular disparity, i.e., the difference in their binocular parallax.
Stereopsis and Tests for Stereopsis - EyeWiki
Stereopsis is a word derived from Greek language meaning “solid” and “power of sight.” The phenomenon of stereopsis is important for several reasons. In the animal kingdom, having a spare eye if one is damaged is necessary for survival.
Defining Real Change in Measures of Stereoacuity
2008年5月21日 · To define real change in stereoacuity, we compared performance on 4 tests of stereoacuity (preschool Randot, near Frisby, distance Randot, and the Frisby–Davis distance [FD2] stereoacuity tests) in patients with stable strabismus across 2 …
Stereoacuity Thresholds Before and After Visual Acuity Testing
Changes in stereoacuity, from before visual acuity testing to after visual acuity testing, were calculated for each subject as the first value minus the second value, so that a negative value would indicate a worsening of stereoacuity. Mean changes (log arcsec) were calculated with 95% confidence intervals (CI).
Stereo vision and strabismus | Eye - Nature
2014年12月5日 · Binocular stereopsis, or stereo vision, is the ability to derive information about how far away objects are, based solely on the relative positions of the object in the two eyes. It depends on both...
Effects of Target Size and Test Distance on Stereoacuity - PMC
Average stereoacuity values for 0.1°, 0.2°, 0.5°, and 0.9° target sizes were 59.58 ± 14.86, 47.66 ± 13.71, 41.25 ± 15.95, and 39.41 ± 15.52 seconds, respectively. Stereoacuity was significantly worse with a 0.1° target than with 0.2°, 0.5°, and 0.9° target sizes (P = 0.03, P < 0.0001, and P < 0.0001, resp.). Examination 2: Test Distance Effects.
Measuring Stereoacuity by 3D Technology | SpringerLink
2015年11月18日 · Stereoscopic acuity, also named stereoacuity, is the smallest measurable depth difference that can be observed by someone with two eyes and normal brain functions. It had been invented by Howard and Dolman who explained stereoacuity with a mathematical model as follows in Fig. 1 .
Intraexaminer repeatability and agreement in stereoacuity …
2015年4月18日 · Stereoacuity was measured in two different sessions separated by a time interval of at least 24h but no longer than 1wk in 74 subjects of mean age 20.6y using the four methods. The study participants were divided into two groups: subjects with normal binocular vision and subjects with abnormal binocular vision.
Clinical Assessment of Stereoacuity and 3-D Stereoscopic
Stereoacuity was assessed at each level using the TNO, Preschool Randot®, Frisby, the FD2, and Distance Randot®. Subjects also completed an object depth identification task using the Nintendo 3DS, a static 3DTV stereoacuity test, and a 3-D perception rating task of 6 video clips.
Clinical evaluation of stereopsis - ScienceDirect
2013年9月20日 · Stereopsis is an important factor in the clinical evaluation of a patient’s vision. Fundamental issues in the design and administration of stereopsis testing are dealt with. Tests are described for determining both the presence of stereopsis qualitatively and the performance limit quantitatively. Optimal conditions are outlined for best ...
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