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  2. Stereoscopic acuity - Wikipedia

    en.wikipedia.org/wiki/Stereoscopic_acuity

    Stereoacuity [1] is most simply explained by considering one of its earliest test, a two-peg device, named Howard-Dolman test after its inventors: [2] The observer is shown a black peg at a distance of 6m (=20 feet). A second peg, below it, can be moved back and forth until it is just detectably nearer than the fixed one.

  3. Stereopsis - Wikipedia

    en.wikipedia.org/wiki/Stereopsis

    There are two types of common clinical tests for stereopsis and stereoacuity: random dot stereotests and contour stereotests. Random-dot stereopsis tests use pictures of stereo figures that are embedded in a background of random dots. Contour stereotests use pictures in which the targets presented to each eye are separated horizontally. [49]

  4. Random dot stereogram - Wikipedia

    en.wikipedia.org/wiki/Random_dot_stereogram

    To view the stereogram, use a stereoscope to present the left image to the left eye and the right image to the right eye or focus on a point behind the image to achieve the same thing. (How to achieve this wall-eyed position of the eyes is described in Autostereogram). The shifted region of random dots will appear as a small, central, square ...

  5. Binocular disparity - Wikipedia

    en.wikipedia.org/wiki/Binocular_disparity

    Thus, each eye has a slightly different view of the world around. This can be easily seen when alternately closing one eye while looking at a vertical edge. The binocular disparity can be observed from apparent horizontal shift of the vertical edge between both views. At any given moment, the line of sight of the two eyes meet at a point in space.

  6. Optokinetic response - Wikipedia

    en.wikipedia.org/wiki/Optokinetic_response

    OKR-based tests have been developed to objectively assess visual acuity, color vision, stereopsis and more. [ 15 ] [ 16 ] [ 17 ] Changes to the stereotypical OKR waveform can also be a biomarker of disease, including stroke, concussion, drug or alcohol intoxication, and parkinsonism . [ 18 ]

  7. What is cherry eye in dogs? A vet explains - AOL

    www.aol.com/cherry-eye-dogs-vet-explains...

    “Cherry eye is a common eye condition in dogs where a gland in the third eyelid pops out and swells up, making it look like a red, swollen ‘cherry’ in the corner of the eye,” says Dr. Hood.

  8. I Spent Months Testing Dog Harnesses to Find the Absolute Best

    www.aol.com/spent-months-testing-dog-harnesses...

    Our Pet Lab tested tons of different harnesses to determine this list of the best, including picks for big dogs, petite pups, pullers, and more. I Spent Months Testing Dog Harnesses to Find the ...

  9. Worth 4 dot test - Wikipedia

    en.wikipedia.org/wiki/Worth_4_dot_test

    The Worth Four Light Test, also known as the Worth's four dot test or W4LT, is a clinical test mainly used for assessing a patient's degree of binocular vision and binocular single vision. Binocular vision involves an image being projected by each eye simultaneously into an area in space and being fused into a single image.