5-Bead Brock String Eye Tracking & Convergence Training Tool

Sharpen Your Focus with the 5-Bead Brock String Training Tool

Whether you're an athlete looking to sharpen your visual performance or someone building stronger eye coordination at home, this 5-Bead Brock String is the go-to tool for eye-tracking, convergence, and target-pointing practice. Simple to use, durable, and compact — it delivers professional-level visual training right from the comfort of your own space.

Key Features

• 5 Color-Coded Beads: Five tightly fitted, distinctly colored beads allow for progressive depth and target-focusing exercises, making it ideal for sport-specific visual drills and everyday eye coordination training.
• Eye Convergence & Tracking Training: Designed to strengthen eye teaming and improve binocular coordination — great for athletes, students, and anyone looking to enhance their visual focus and targeting skills.
• Sports Performance Edge: Used by vision coaches and sports trainers to develop sharper gaze control, faster target acquisition, and improved depth perception for a competitive advantage.
• Easy to Use at Home: Minimal learning curve — simply anchor one end, hold the string to your nose, and work through each bead. No special equipment or setup required.
• High-Quality Construction: Made from durable plastic beads and a sturdy nylon string built to withstand regular training sessions.
• Portable Storage Case Included: Comes with a plastic storage box that keeps the tool clean, dust-free, and easy to take on the go.

Product Specifications

• Material: Plastic + Nylon
• Dimensions: 14.5 cm × 8.5 cm × 3.5 cm (5.7 in × 3.3 in × 1.4 in)
• Colors: As shown in product images
• Country of Origin: Made in China

What's in the Box

• 1 × 5-Bead Brock String (Amblyopia Training Five Color Ball)
• 1 × Plastic Storage Box

Important Notes

• Product images may not reflect actual size — please refer to the specifications above for accurate measurements.
• Minor variations due to manual measurement are possible.
• Colors may vary slightly depending on your monitor's display settings.

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Frequently Asked Questions

Q: What is a Brock String and how is it used for eye coordination training?

A: A Brock String is a classic eye-training tool used to develop binocular vision and eye convergence. You hold one end of the string to your nose while the other end is anchored to a fixed point. By focusing on each of the 5 colored beads one at a time, you train both eyes to work together, improving depth perception, tracking accuracy, and target-pointing precision. It's a well-established exercise tool used by vision therapists, sports coaches, and athletes.

Q: Is the Brock String suitable for home use or do I need a professional to guide me?

A: This Brock String is designed with home users in mind. The learning curve is minimal — most people can begin their first training session within minutes. That said, if you're following a specific vision therapy protocol, consulting with a qualified eye care professional is always a good idea to ensure you're using it correctly for your goals.

Q: How durable is the string and are the beads firmly attached?

A: Yes — the 5 beads are tightly fitted onto a high-quality nylon string, designed to stay in place during repeated training sessions. The beads and string are made from durable plastic and nylon materials built for regular use. The included plastic storage box also helps protect the tool when not in use.

Q: Can this Brock String be used by children as well as adults?

A: The Brock String is commonly used across a wide range of ages for eye coordination exercises. However, for younger children, adult supervision is recommended. Always ensure the child understands the correct way to hold and use the tool safely.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.