Stereoscopic Vision and Depth Perception Testing

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Lang Stereo Tests II Zoom In

Lang Stereo Tests II

Good-Lite (Formerly Richmond Products, Inc.)

  • Description: The Lang Stereotest was created to simplify stereopsis screening in children. It is based on two principles: random dots and cylindrical gratings. Lang Stereotest II measures disparities: Moon and Star are 200, car 400 and elephant 600 seconds of arc plus monocularly visible star. In the new Lang II test, the random dots are smaller and less dense. This disparity is finer, namely 200 seconds of arc for the moon and the star, 400 for the car, and 600 for the elephant when viewed at a distance of 40cm. The monocularly visible star helps attract and maintain the interest of small children. It also gives the patient without binocular vision the satisfaction of having seen something at all.
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
  • Answer Key: Inquire
  • Test Glasses: Inquire
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Pop-Up 3D Book Zoom In

Pop-Up 3D Book

Good-Lite (Formerly Richmond Products, Inc.)

  • Description: An eye-popping 32-page book of 3D images to help children explore the world of stereo vision and nature, and make your exam easier. Images include boy-oriented items such as a tarantula, frogs, fly, tortoise, and myrtlewood bowl and an equal number of girl appropriate items such as sea shells, flowers and garden scenes. While these images are not calibrated for binocular vision testing, they evoke such an immediate response that it becomes incredibly obvious that stereo vision is present. The text is written for ages 10 and older and describes the basics of how 3D imagery works. Most images are viewed with special red-cyan 3D glasses provided with the book. Size: 8 1/2 x 11 inches ( 21.5 x 28 cm).
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
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  • Test Glasses: Inquire
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Stereo Insect and Random Dot Polarized tests Zoom In

Stereo Insect and Random Dot Polarized tests

Good-Lite (Formerly Richmond Products, Inc.)

  • Description: These polarized stereo tests provide accurate measurement of stereopsis. These tests come with a choice of polarized glasses. The original comes with 0.006" thick film lenses slipped into a thin plastic frame with plastic temples. The other choice includes Richmond’s new P/N 4465 Polycarbonate polarized hard lenses mounted in a sturdy metal frame.
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
  • Answer Key: Inquire
  • Test Glasses: Inquire
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TNO Stereo tests Zoom In

TNO Stereo tests

Good-Lite (Formerly Richmond Products, Inc.)

  • Description: Comes with seven test plates. Red and green glasses filters are mounted in two frames, one for adults and one for children. Suitable for testing very small children as well as adults.
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
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Random Dot E Zoom In

Random Dot E

Precision Vision®

  • Description: Stereo vision is a term used to identify how each eye sees an object at a slightly different angle, yet both eyes work together to give us a three dimensional effect. Stereo vision can be tested using different types of charts, including this Random Dot E test. This test involves the patient wearing stereo glasses (to prevent guessing) and identifying the stereo or "raised" letter E. The patient is also asked to identify the non-stereo dot or target. This helps to identify problems such as Amblyopia and Strabismus in child patients.
    • Designed specifically for use with small children
    • Includes: Raised E target, non-stereo target, demonstrator and stereo glasses
    • This test is produced by: Stereo Optical Company, Inc.
    • Randot is a registered trademark of Stereo Optical Company, Inc.
    • Patient is asked to distinguish between raised E and non-stereo target
    • Great for the detection of Amblyopia and Strabismus
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
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Randot Stereo Test Zoom In

Randot Stereo Test

Precision Vision®

  • Description: This Randot Stereo Test is aimed for adult stereo testing, but also includes an animal portion for pediatric testing. Adult patients are asked to identify six geometric shapes during testing. This test helps to test the patient depth perception along with normal stereo vision. Adult testing involves 400 to 20 seconds of arc, and pediatric testing involves 400 to 100 seconds of arc.
    • Unique vectorgraph test to identify forms from random dot backgrounds
    • Test Includes: Randot test with two levels of stereopsis (500 and 250 seconds of arc), graded circle test (400 to 20 seconds of arc), animal testing for young children (400 to 100 seconds of arc), and one set of stereo glasses
    • This test is produced by: Stereo Optical Company, Inc. Randot is a registered trademark of Stereo Optical Company, Inc.
    • Helps in the detection of Amblyopia, Strabismus, and Suppression
    • Can be used for pediatric stereo testing
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
  • Answer Key: Inquire
  • Test Glasses: Inquire
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Stereo Butterfly Test Zoom In

Stereo Butterfly Test

Precision Vision®

  • Description: This test is designed for the testing and evaluation of both gross stereopsis and depth perception. The test involves the use of a butterfly picture during testing. Each set of wings an the abdomen feature different seconds of arc (upper wings 2000 seconds of arc, lower wings 1150 seconds of arc, and abdomen 700 seconds of arc). This helps to test several different levels of stereopsis and presents a more in depth stereo test.

    This test is produced by: Stereo Optical Company, Inc.
    Randot is a registered trademark of Stereo Optical Company, Inc.

    • Offers no monocular clues to discourages guessing
    • Allows effective screening of gross stereopsis
    • Used for the evaluation of fine depth perception
    • Set includes: random butterfly test for gross stereopsis (2500 to 1200 seconds of arc), graded circle test (800 to 400 seconds of arc), animal testing for young children and stereo glasses
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
  • Answer Key: Inquire
  • Test Glasses: Inquire
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Stereo Fly Test Zoom In

Stereo Fly Test

Precision Vision®

  • Description: This Stereo Fly test is designed for the evaluation of both gross stereopsis and fine depth perception. The Stereo Fly test is used as a standard in stereo testing. The large image of the fly is useful for testing children, as they respond to large objects or pictures well. Test also features targets and animals for further stereo testing. Test only works with the use of the stereo glasses. This helps prevent guessing and creates a more reliable stereo vision test.

    This test is produced by: Stereo Optical Company, Inc. Randot is a registered trademark of Stereo Optical Company, Inc.

    • Recognized as the Standard for stereo depth perception testing
    • Test allows easy evaluation of both gross and fine stereo vision
    • Folder includes: House fly test for gross stereopsis, graded circle test (800 to 40 seconds of arc), animal testing for young children (400 to 100 seconds of arc) and stereo glasses
    • Fly features 3500 to 40 seconds of arc
  • Stereopsis Evaluation Levels: Inquire
  • Graded Circle Test: Inquire
  • Test Distance: Inquire
  • Minimum Patient Age: Inquire
  • Symbols Used: Inquire
  • Answer Key: Inquire
  • Test Glasses: Inquire
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