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The Original Brock String
Train Convergence
Convergence training using a Brock String can be useful for convergence insufficiency, as well as strength and athletic performance.
Sports Performance
With a 10-foot long string and 5 tight-fitted beads, this Brock String is great for training the eyes in sport-specific positions – giving you the ultimate edge.
Easy To Use
You can use Brock String right from the comfort of your home with a very short learning curve involved.
High Quality
This Brock String is designed with an extremely high quality, and highly durable string and beads. It also comes with instructions included and responsive customer support should you have any questions.
CaseyB
2025-09-06 15:26:59
Our child’s physical therapist recommended these as they are working on vestibular issues right now. This continues to be a challenge for my child and we are thankful we were able to find this for such a great price.
Sherri
2025-09-05 13:50:40
Instructions Have colors of beads in a specific order that doesn’t match the actual string order. I tried to remove and replace beads but had a hard time stringing them. So purchased another also stringed incorrectly. Not sure color order makes a difference but I thought the tool was still effective.
Syngen
2025-08-16 16:02:40
Simple yet very helpful in exercising your eyes in getting them to focus more quickly. You will notice how you need to focus very small (where the string goes into the ball) to make your binocular vision accurate and for the string to look like a V before and after the ball you're focusing on. Binocular vision and picking up targets is important in what I do and this really helps. So simple and low-cost, do it at home - no wonder no eye doctor ever mentioned it during the 55 years I wore eyeglasses. It will help in any sport where you need to focus on a ball, target, basket, etc.
CaseyB
2025-08-12 16:53:08
Our child’s physical therapist recommended these as they are working on vestibular issues right now. This continues to be a challenge for my child and we are thankful we were able to find this for such a great price.
Sherri
2025-08-08 20:55:32
Instructions Have colors of beads in a specific order that doesn’t match the actual string order. I tried to remove and replace beads but had a hard time stringing them. So purchased another also stringed incorrectly. Not sure color order makes a difference but I thought the tool was still effective.
Syngen
2025-07-30 13:45:56
Simple yet very helpful in exercising your eyes in getting them to focus more quickly. You will notice how you need to focus very small (where the string goes into the ball) to make your binocular vision accurate and for the string to look like a V before and after the ball you're focusing on. Binocular vision and picking up targets is important in what I do and this really helps. So simple and low-cost, do it at home - no wonder no eye doctor ever mentioned it during the 55 years I wore eyeglasses. It will help in any sport where you need to focus on a ball, target, basket, etc.
Julián R.
2025-07-27 19:07:03
En amazon.es costaba unos 27€. Se me ocurrió mirar en amazon.com y costaba 9€. Además hice un pedido de más artÃculos por lo que los gastos de envÃo (de este artÃculo en concreto) fueron cero.
BlueTurtle
2025-07-20 18:03:40
String is nice and taut and the beads slide easily, but stay put once you move them. Great design!
B.os
2025-07-16 15:24:38
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.
Nurse Jesica
2025-06-26 18:03:26
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.
Narda Pitkethly
2025-06-23 12:29:59
I'm so thrilled to report that my eyes are beginning to work better thanks to this terrific tool, the Brock String. The customer service is excellent!
Patrick Szymczak
2025-06-14 14:11:27
Honestly, it's amazing as a cheap eye convergence device. helps me a lot with my problems. Deep down I feel really petty about wanting to complain about how my mom when I was younger refused to get me one of these. Like dude, they're so cheap too. It trains the part of your brain that moves the muscles very well.
BogHopper
2025-06-07 10:50:19
Beads unfixed. No loop for fixing or holder. Just a piece of string and 5 beads. Disappointing.
Brad
2025-05-30 15:31:50
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.
bill
2025-05-26 10:02:18
The string does it's job very well
jenny mcleod
2025-05-21 12:12:04
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.
Julián R.
2025-05-13 17:06:07
En amazon.es costaba unos 27€. Se me ocurrió mirar en amazon.com y costaba 9€. Además hice un pedido de más artÃculos por lo que los gastos de envÃo (de este artÃculo en concreto) fueron cero.
BlueTurtle
2025-04-28 21:51:30
String is nice and taut and the beads slide easily, but stay put once you move them. Great design!
B.os
2025-03-19 21:27:04
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.
Nurse Jesica
2025-03-14 11:35:31
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.
Narda Pitkethly
2025-03-12 17:29:32
I'm so thrilled to report that my eyes are beginning to work better thanks to this terrific tool, the Brock String. The customer service is excellent!
Patrick Szymczak
2025-03-11 18:24:41
Honestly, it's amazing as a cheap eye convergence device. helps me a lot with my problems. Deep down I feel really petty about wanting to complain about how my mom when I was younger refused to get me one of these. Like dude, they're so cheap too. It trains the part of your brain that moves the muscles very well.
BogHopper
2025-02-07 20:21:13
Beads unfixed. No loop for fixing or holder. Just a piece of string and 5 beads. Disappointing.
Brad
2025-02-03 17:50:03
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.
bill
2025-01-15 13:39:39
The string does it's job very well
jenny mcleod
2025-01-07 13:54:06
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.
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