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Tondel Arrows at Edge Card


Item #: TNARSET+

Professional Pricing Available to Registered Healthcare Professionals, Schools, & Government. Click on the blue info button for more details.

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  • Tondel Arrows at Edge Card (Set of 5)
  • You must be logged in to your Bernell Online account in order to view pricing for products. Healthcare Professionals, Staff, Schools, & Government, please login to your Bernell Online accounts for pricing. Please click on the blue info button for more details

  • Tondel Arrows at Edge Card (Individual Card)
  • You must be logged in to your Bernell Online account in order to view pricing for products. Healthcare Professionals, Staff, Schools, & Government, please login to your Bernell Online accounts for pricing. Please click on the blue info button for more details


Developed By:
Grazyna M. Tondel, MD, MS, PhD


Consist of 6 pairs of colorful arrows. The arrow point from each pair touch each other along the middle, vertical line of the card. The card folds along this line and is shaped into a wedge. When used like a Brock String, the card enables training both smooth and jump vergence movements. Cards come pre-cut to easily fold into shape.

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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.

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