Call: 1.773.867.0380 or 1.800.344.9500

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1.773.867.0380 or 1.800.344.9500

Contact Stereo Optical for more information about the Stereo Fly SO-001 or any of our other StereoTests for stereopsis, amblyopia, and strabismus testing.






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Stereo Fly and Other StereoTests Used in Stereopsis, Strabismus, and Amblyopia Testing

Stereo depth-perception tests, such as the Stereo Fly SO-001, have proven to be an effective and easy-to-use method of screening vision for all ages. They help to identify vision problems and conduct stereopsis, amblyopia, suppression, and strabismus testing, each of which can impede a child's development and performance. Stereopsis tests provide information about depth perception and how the eyes function together as a team.

The NEW Distance Randot Stereotest®

Finally, a test for distance stereopsis for patients as young as 4 years of age.

  • 4 tests in 1 booklet (400 sec of arc to 60 sec of arc)
  • 1 pair of Standard 3-D Viewers and 1 pair of Pediatric 3-D Viewers
  • Affordable
  • Portable and readily available

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Stereo Fly SO-001

Stereo Fly SO-001Recognized as the standard for Stereo Depth Perception testing, the Stereo Fly SO-001 allows for easy administration and evaluation of both gross and fine stereo vision. This test is designed so that it is easy to administer. All items of the Stereo Fly test are manufactured with high quality materials, ensuring sharp long lasting images.

The test includes:

  • Graded circle test (800 to 40 seconds of arc)
  • Animal test for children (400 to 100 seconds of arc)
  • One pair of standard 3-D viewers

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Stereo Butterfly SO-005

Stereo Butterfly SO-005The Stereo Butterfly SO-005 tests and evaluates random dot stereo depth perception for both gross stereopsis (2500 to 1200 seconds of arc) and fine depth perception. The figures present on the test cannot be identified without viewing glasses.

The test includes:

  • Graded circle test (800 to 40 seconds of arc)
  • Animal test for children (400 to 100 seconds of arc)
  • One pair of standard 3-D viewers

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Randot® SO-002

Randot® SO-002The Randot® SO-002 tests and evaluates stereo depth perception by requiring patients to identify six geometric forms from random dot backgrounds (500 to 20 seconds of arc).

The test includes:

  • Graded circle test (400 to 20 seconds of arc)
  • Animal test for children (400 to 100 seconds of arc)
  • One pair of standard 3-D viewers

Randot® Preschool Stereoacuity SO-007

Randot® Preschool Stereoacuity SO-007The Randot® Preschool Stereoacuity Test SO-007 tests stereopsis from 800 to 40 seconds of arc on patients as young as two years of age. This StereoTest is designed as a matching game in which the patient matches the pictures on the left side with those on the right. To eliminate guessing, figures cannot be seen without viewing glasses.

The test includes:

  • One pair of pediatric 3-D viewers
  • Three tests in one booklet:
  • Test #1: 200 and 100 seconds of arc
  • Test #2: 60 and 40 seconds of arc
  • Test #3: 800 and 400 seconds of arc

Randot® Preschool Stereoacuity Test designed by Eileen Birch, PhD & The Retina Foundation of the Southwest

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Random Dot "E" SO-003

Random Dot "E" SO-003The Random Dot "E" SO-003 StereoTest is designed specifically for use with children as young as three years of age and up. The patient is asked to distinguish between a "raised E" and a non-stereo target. Figures cannot be identified without the viewing glasses to discourage guessing. This product is recommended by the American Academy of Ophthalmology and the American Academy of Pediatrics.

The test includes:

  • One demonstration card
  • One blank card
  • One pair of standard 3-D viewers
  • One pair of pediatric 3-D viewers

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3-D Viewers

3-D ViewersStereo Optical offers a variety of 3-D viewers for use in stereopsis, amblyopia, and strabismus testing:

  • Infant SO-013 - Durable, multicolored plastic frame is designed for children six months and older. (one viewer per package)
  • Pediatric SO-009 - Durable plastic frame for children two years and older (one viewer per package)
  • Standard SO-010 - Durable black plastic frame (five viewers per package)

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Contact Stereo Optical

To order any of the StereoTests on this page, including the Stereo Fly SO-001, contact Stereo Optical. Recognized as the industry standard in stereopsis, strabismus, and amblyopia testing, these devices are long-lasting and dependable.

Randot® is a registered trademark of Stereo Optical Company, Inc