---
product_id: 38669120
title: "Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S..."
brand: "brock string"
price: "13460CFA"
currency: XOF
in_stock: null
reviews_count: 8
url: https://www.desertcart.sn/products/38669120-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle
store_origin: SN
region: Senegal
---

# 10 ft precision length 5 tightly fitted beads durable nylon string Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S...

**Brand:** brock string
**Price:** 13460CFA
**Availability:** ❌ Out of Stock

## Summary

> 👁️‍🗨️ See sharper, perform stronger – train your vision like a pro!

## Quick Answers

- **What is this?** Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S... by brock string
- **How much does it cost?** 13460CFA with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/38669120-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle)

## Best For

- brock string enthusiasts

## Why This Product

- Trusted brock string brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Boost Athletic Edge:** Sharpen hand-eye coordination and visual agility to outperform competitors in any sport.
- • **Five High-Quality Beads:** Enhance depth perception and focus with five tightly fitted, durable beads.
- • **Precision 10-Foot Length:** Maximize your training space with a full 10-foot string for versatile eye exercises.
- • **Durable Nylon Construction:** Built to last with premium nylon string and sturdy plastic grips for consistent performance.
- • **Comprehensive Training Guide:** Step-by-step instructions included to ensure effective and confident use from day one.

## Overview

The Brock String Vision Convergence Insufficiency Training Tool is a 10-foot nylon string with 5 durable beads designed to strengthen eye muscles, improve focus, and enhance depth perception. Ideal for athletes and vision training enthusiasts, it includes clear instructions for effective use, making it a must-have for anyone serious about elevating their visual performance and coordination.

## Description

Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility

## Features

- 10 Foot Brock String
- Convergence Insufficiency Trainer
- Sports Vision Training
- 5 Tightly Fitted Beads on High Quality String
- Instructions Included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Brock String |
| Target Audience | Adult |
| Material | Nylon |
| Handle Material | Plastic |
| Color | White |
| Item Length | 120 Inches |
| Item Weight | 0.02 Kilograms |
| Manufacturer | Thera Systems LLC |
| UPC | 722512368781 860007923081 |
| Item Package Dimensions L x W x H | 4.65 x 3.54 x 0.94 inches |
| Package Weight | 0.1 Kilograms |
| Brand Name | Brock String |
| Suggested Users | unisex-adult |
| Part Number | 7.22512E+11 |
| Style | Pack of 1 |
| Size | 10 Ft with 5 Beads |
| Grip Material | Plastic |

## Product Details

- **Brand:** Brock String
- **Target Audience:** Adult
- **Material:** Nylon
- **Handle Material:** Plastic
- **Color:** White

## Images

![Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle S... - Image 1](https://m.media-amazon.com/images/I/615dTbVdzbL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Will this improve bad case of myopia in adolescent?**
A: This device improves depth perception, the ability of both eyes to focus at the same distance.  Myopia is the inability to see beyond a given (near) distance.  This may help improve myopia, but is not the intention.  I use it to improve my focus n the front sight of my air rifle.

**Q: Will this exercise help achieve fusion if the eyes are slightly turned inwards, rather than outwards?**
A: If you believe the research, based on how it works, all eye muscles should be strengthened.  I bough it to help me to hopefully correct my blurred Red Dot.  It took about 8 weeks before I noticed a change.  Good Luck.

**Q: How long do you needto do this to get results?**
A: I really don't know. I've been doing it for a few months--a regular, brief daily routine--along with remembering to be aware of seeing out of both eyes, rather than ignoring my lazy eye. Don't know how long it will take to get results -- but I think of the words of my meditation teacher when asked a similar question: "try it for a couple of years and see what you think . . ." Good luck and if it's not helping, check out the book, 'Fixing My Gaze'. There's some good information in there.

**Q: Does this fix eye asymmetry?**
A: Hi,

This product is intended for convergence training where the eyes work together to perform convergence at each bead.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cheap price but not cheap quality
*by J***S on May 25, 2025*

The string quality is excellent. The beads move freely enough when you want to move them but stay put where you place them. Simple eye tool that is very well constructed.

### ⭐⭐⭐⭐⭐ Great price, great quality.
*by N***A on November 3, 2019*

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.

### ⭐⭐⭐⭐ Develop better binocular vision and small focus.
*by S***N on November 7, 2018*

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.

## Frequently Bought Together

- Brock String 10 Foot Vision Convergence Training Tool - Train Vision, Improve Strength & Athletic Performance, and More!
- 2 Strabismus Correction Cards, Improve Visual Sense Amblyopia Coated Paper Training Cards with Red and Green Bars
- Brock String - Vision Convergence Training - Convergence Insufficiency Tool - Train Vision, Athletic Performance, and More!, White, 6 foot

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-02-20*