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10 Foot Vision Convergence Training Tool – Train Vision, Improve Strength & Athletic Performance, and More!

(13 customer reviews)

Original price was: $9.99.Current price is: $8.00.

  • 10 Foot Brock String
  • Convergence Insufficiency Trainer
  • Sports Vision Training
  • 5 Tightly Fitted Beads on High Quality String
  • Instructions Included
Last updated on May 15, 2026 5:19 am Details

13 reviews for 10 Foot Vision Convergence Training Tool – Train Vision, Improve Strength & Athletic Performance, and More!

  1. Yo Mama

    Super long, but it works!
    Update: been using this for about 4 months now, and my physical therapist said I am showing great improvement! Love this thing! So easy to use.

  2. BlueTurtle

    String is nice and taut and the beads slide easily, but stay put once you move them. Great design!

  3. Amazon Customer

    Great product. The beads stay in place and I can see some improvement in my lazy eye.

  4. B.os

    Ideally you want a taught rope for your Brock String. Because if the string is too elastic (like this one), the the weight of the beads will cause the rope to bounce. Also, when the elastic rope stretches, the diameter of the rope gets thinner, which then makes the beads slide freely on the string.

  5. madeline audrey

    The first time I ordered, I received one with three beads instead of five so I returned it. I hesitated, but ordered again, and received one with 5 beads. It’s good quality and the most affordable one I could find.

  6. jenny mcleod

    Corrispondente alle caratteristiche di utilizzo.
    Puntuale la consegna

  7. Christopher Allen Lee

    This Brock String, has helped me with my focusing. Great product

  8. Brad

    Il prodotto è Funzionalmente quello,un cordino con diversi pallini di fissazione a distanza modificabile ma la qualità e la presentazione non giustificano il prezzo troppo alto.
    Non ha neanche una scatolina di conservazione ma è arrivato in bustina trasparente.
    Anche la qualità del cordino è scarsa.
    Non lo riacquisterei.

  9. BogHopper

    Works great, quality string and beads. My right eye that is a bit lazy when I look to the right and I already see improvements after just five minutes of using this, which makes me happy. Seems like the proper way to exercise your eyes to work together so they align rather than just using an eye patch (which I haven’t tried, but have heard this is better). This string is a better quality than something I might have tried to make to save a couple bucks, and it’s worth it to invest in yourself. Hung it on my door coat hanger and will continue to use this exercise regularly.

  10. madeline audrey

    I am really happy with this brock string. I have lazy eyes and have been getting headaches. My eye doctor suggested a brock string and I feel like it has really helped. This string is looong – I don’t use the whole length. I tape up one end to the wall and do my exercises. Overall great quality.
    If you found my review helpful, please click yes below! 🙂

  11. Nurse Jesica

    When the concussion team told me this Brock rope was going to help my daughter retrain her eyes, I couldn’t believe it. It works. The beads are high quality and the rope is soft and smooth. She packs it easily in her back and it never tangles. The beads slide just right. Once rehab is done, we will donate this product to the concussion clinic. It is so well made they probably will have it for years to come.

  12. Karla

    Super fast shipping, product and customer service!!!

  13. Marco Debbi

    Beads unfixed. No loop for fixing or holder. Just a piece of string and 5 beads. Disappointing.

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