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BEST - Dinosaur Version

Item #: BESTD1

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Bernell Evaluation of Stereopsis Test - Dinosaur Version

Glasses-Free Depth Perception Test

Glasses-Free Depth Perception Test

Introducing our innovative glasses-free depth perception test that leverages lenticular technology to provide a captivating and cost-effective alternative to red/green or polarized glasses-based tests. This cutting-edge technology enables the use of full-color images, enhancing user engagement while ensuring the test's longevity due to its resistance to fading over time.

A primary challenge in designing this test was eliminating apparent motion, which could allow even a monocular patient to identify the correct answer by moving the test from side to side. To address this issue, we've designed the test with a unique layout: one image in each row appears closer, while the other appears farther away in relation to the circle they are housed in. As a result, although moving or twisting the test may reveal differences between the images, it won't indicate whether they come forward or recede.

The test includes two test plates:

  1. Plate #1 showcases a dinosaur character to assess gross stereopsis.
  2. Plate #2 features clip-art characters in two distinct tests:
    • Test 1 (Rows 1-4) evaluates fine depth perception with a range of targets, progressing from 400 seconds of arc down to 40 seconds of arc.
    • Test 2 (Rows A-C) examines depth perception at 400 (Row A), 200 (Row B), and 80 (Row C) seconds of arc targets.

Discover the next generation of depth perception testing with this engaging and efficient solution that eliminates the need for traditional glasses.

• Test is housed in a black vinyl, diploma style booklet.
• The answer key is printed on the back of the booklet.
• Includes instruction manual.

Validation Studies:
Comparison Between the BEST Stereopsis Test and the Stereo Fly Test
Authored by: Shankaran Ramaswamy, BS Optom, PhD; Kathleen O'Leary, OD; Mengli Han, OD; Jack Richman, OD
Published in Volume 7, Issue 3, July 2019 of the Optometry & Visual Performance Journal
To read the study, click here

Comparison of a New, Filter-Free Stereopsis Test (BEST) With the Randot Stereotest in a Pediatric Cohort
Oded Lagstein, MD; Idan Hecht, MD; Irene Anteby, MD
Journal of Pediatric Ophthalmology and Strabismus. 2020;57(2):129-135
To read the study, click here

Booklet Dimensions: 6" x 8"
Booklet Color: Black
Product Risk Disclaimer

Bernell's Commitment to Safety and Quality:

As a dedicated provider of ophthalmic solutions, Bernell categorizes this product as a low-risk Class I medical device, designed with your safety and well-being as our top priority. Our rigorous quality control processes and comprehensive risk assessments aim to ensure the highest standards of safety and efficacy for our users.

Understanding the Risks:

While we are proud to report that there have been no documented adverse reactions associated with this product, we acknowledge the inherent truth that no product is entirely devoid of risk. It is our duty to inform and educate our users about the responsible use of our products to minimize potential risks.

Guidelines for Safe Use:

For your safety, Bernell strongly advises against the use of any of our products that may impair or diminish vision during activities requiring clear and unobstructed sight. The safety and health of our customers and their patients are paramount, and as such, we recommend that any application of this product be undertaken following the guidance of a qualified healthcare professional.

Your Role in Ensuring Safety:

We believe in the power of community and the importance of your feedback. Should you encounter any adverse effects or have safety concerns related to the use of our products, we implore you to reach out to our Customer Service Team immediately. You may contact via phone at 574-259-2070 during regular business hours, or email Your reports are crucial for us to conduct thorough investigations and take appropriate actions to uphold our commitment to product safety and quality.

EU Authorized Representative (EAR):

MedEnvoy Global B.V.
Prinses Margrietplantsoen 33 - Suite 123
2595 AM The Hague
The Netherlands

Additional Regulatory information can be found by clicking here

Disclaimer: Please note that the products offered on our website have not been evaluated or reviewed by the United States Food and Drug Administration (FDA), unless explicitly stated otherwise. The information provided on this website is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. The products offered on our website are not intended to replace or substitute any advice, diagnosis, or treatment provided by a qualified healthcare professional. It is strongly encouraged that any use of our products in an effort to improve visual skills only be done so under the guidance and supervision of a qualified healthcare professional. Although we at Bernell choose to sell our products exclusively to healthcare professionals as they are our target market, we strongly advise that anyone who may come across our products on a secondary market consult with a qualified healthcare professional before using any product. Additionally, we do not offer instructions for intended use, nor make claims for healthcare professionals, in how to diagnose, treat, cure, or prevent any disease or medical condition with our products. The majority of the items offered under vision therapy or vision training categories on this site fall under the FDA's General Wellness: Policy for Low-Risk Items. For safety reasons, we do not condone the use any of our products that occlude or restrict vision in any way while participating in activities that may require unrestricted vision.

Call Toll Free 1-800-348-2225 or (574) 259-2070

Fax to (574) 259-2102 or (574) 259-2103