Vision Convergence Training - Convergence Insufficiency Tool - Train Vision, Athletic Performance, and More!, White, 6 foot

This Brock string is much better quality than I expected. It's not medical grade, but the balls don't easily slide around when you're using it; they stay in place. But they are also easily adjustable for multiple exercises. The string is kind of a plastic string material, so it can stay pretty taut, which is necessary for the eye exercises it's used for. It's easy to tie and untie. I just tie it to a cabinet handle, and it works great!

I saw a video on YouTube using the Brock String and knew it was a great idea! I received it promptly and have been using it several times a day since. I can feel my eye muscles having to work so I it's fulfilling its purpose. I've bought several more as gifts for friends.

Effectively fulfills its function. Some of the beads are looser than others and their position needs to be corrected with each use. I would recommend this product.

I read a lot of reviews that mentioned the beads being loose on the string, but I did not find that to be the case. The string is good quality and the beads fit well and stay in place, yet are easy to position. The item comes with directions and I received an email from the seller with a pdf of the same sheet, which I appreciated.My only issue is that my eyes freakin suck! I have a prism of 21 in my glasses, an extreme case of diplopia. I don't have "googly eyes (what my wife teases me about), but they just don't like working together as they tend to act esotropic. I am somewhat discouraged that I simply cannot see a single image of a bead if it is positioned more than 5 inches from my face. The directions provided do not provide any guidance for this issue but I was able to find some tips on other internet sources. If anyone else has the same issue, use an index card to cover your dominant eye and focus hard on the bead with the other eye. Slowly remove the index card and it can help bring the two images of the bead closer together. Alternatively, simply closing your eyes for a second can bring them close as well.I realize this item isn't necessarily sold to treat a medical condition, but perhaps the seller can add these tips in for sports use? All in all, fantastic product and great customer support!

Satisfied

One of the most important results I get from using this product is the tracking of both my eyes at the same time. It helps develop and improve my comprehension when studying and reading because both my eyes are now tracking at the same time which allows the information to flow to me without blockage. This product is now hanging from a wall in my office, and I use it every day for a couple of minutes to ensure my mind is opened to learning! Highly recommend!

Used to compliment daughters vision therapy sessions. Works great!

Had a Brock String for one of my children some years ago. The beads were much larger than on this product, and therefore, easier to see. That can be important for someone trying to work on vision problems. The third bead out in the standard 3-bead set up is light green, which adds to the difficulty of being able to see it. Had to order larger replacement beads. Also note, the beads are not anchored in place with knots. You have to read the instructions, get out a ruler, and tie the beads n place yourself.