--- product_id: 55273442 title: "Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility" brand: "brock string" price: "85.11 DT" currency: TND in_stock: true category: "Brock String" url: https://www.desertcart.tn/products/55273442-vision-convergence-insufficiency-training-tool-for-eye-muscle-strengthening-focus store_origin: TN region: Tunisia --- # 72-inch precision training length Boosts athletic visual coordination Durable nylon/polypropylene build Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility **Brand:** brock string **Price:** 85.11 DT **Availability:** βœ… In Stock ## Summary > πŸ‘οΈβ€πŸ—¨οΈ See sharper, perform stronger β€” don’t let your vision hold you back! ## Quick Answers - **What is this?** Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility by brock string - **How much does it cost?** 85.11 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/55273442-vision-convergence-insufficiency-training-tool-for-eye-muscle-strengthening-focus) ## 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 - β€’ **Guided Precision Training:** Includes expert instructions to maximize your vision workouts and fast-track your progress. - β€’ **Athlete-Approved Visual Edge:** Train in sport-specific positions to gain unmatched hand-eye coordination and competitive advantage. - β€’ **Sharper Focus, Stronger Vision:** Enhance eye muscle strength and convergence for crystal-clear daily and sports vision. - β€’ **Built to Last, Built for Results:** Premium string and beads crafted for durability and consistent performance session after session. - β€’ **Effortless Setup, Instant Training:** Simple, intuitive design lets you start vision exercises at home with zero hassle. ## Overview The Brock String Vision Convergence Training Tool is a 72-inch durable nylon and polypropylene eye exercise device designed to strengthen eye muscles, improve focus, and enhance visual coordination. Ideal for athletes and vision training enthusiasts, it offers easy setup, premium materials, and clear instructions to boost convergence and hand-eye coordination for superior daily and sports performance. ## Description Take your vision and athletic performance to the next level with the Brock String, a versatile sight adjustment tool designed for hand eye coordination training, vision exercise, and depth perception training. Ideal for athletes, hobbyists, and anyone looking to improve visual skills, this tool strengthens eye muscles while enhancing focus and precision. By practicing with the Brock String, you can enhance eye tracking, alignment, and coordination, giving you a competitive edge in sports or daily activities that demand sharp vision. Setup is simple and intuitive, making this vision exercise tool suitable for both beginners and advanced users. The durable string and high-quality beads provide long-lasting performance, ensuring consistent results over repeated sessions. A clear, included instruction guide walks you through proper use and tips to maximize your training, so you can confidently practice at home or in the gym. ## Features - ENHANCE CONVERGENCE AND FOCUS: Use the Brock String convergence training tool to strengthen eye muscles, focus, and support visual performance for daily activities and sports - BOOST ATHLETIC PERFORMANCE: The Brock eye string allows precise eye training in sport-specific positions, giving you a competitive edge and enhanced visual coordination - EASY-TO-USE EYE EXERCISE TOOL: Simple setup and short learning curve let you practice convergence and eye focus exercises at home, making vision training convenient for beginners and advanced users - PREMIUM FOCUS STRING WITH BALLS: Crafted with durable string and high-quality beads, this eye muscle strengthening tool ensures long-lasting use and consistent performance for repeated vision exercises - FRONT SIGHT TOOL WITH INSTRUCTIONS INCLUDED: Comes with clear guidance and tips for proper use, ensuring effective training and helping you get the most from your Brock String sessions ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B075881G1K | | Best Sellers Rank | #2,254 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #4,297 in Shooting #5,029 in Hunting Equipment | | Brand Name | Brock String | | Color | Blue, Green, Red | | Customer Reviews | 4.5 4.5 out of 5 stars (2,173) | | Grip Material | Nylon or Polypropylene | | Handle Material | Nylon or Polypropylene | | Item Length | 72 inches | | Item Weight | 0.04 kg | | Manufacturer | Thera Systems LLC | | Material | Nylon, Polypropylene (PP) | | Model Number | 5Q-N5NL-FZO4 | | Number of Items | 3 | | Other Special Features of the Product | Convergence Training | | Part Number | 5Q-N5NL-FZO4 | | Recommended Uses For Product | Vision Training, Convergence Insufficiency, Strength and Athletic Performance, Sports Performance | | Target Audience | Adult | | UPC | 860007923098 722512369382 | | Unit Count | 3 Count | ## Product Details - **Brand:** Brock String - **Material:** Nylon, Polypropylene (PP) - **Recommended Uses For Product:** Vision Training, Convergence Insufficiency, Strength and Athletic Performance, Sports Performance - **Special Feature:** Convergence Training - **Target Audience:** Adult ## Images ![Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - Image 1](https://m.media-amazon.com/images/I/51i-qwxd9HL.jpg) ![Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - Image 2](https://m.media-amazon.com/images/I/61sBJaJtdXL.jpg) ![Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - Image 3](https://m.media-amazon.com/images/I/51dsMZYiYtL.jpg) ![Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - Image 4](https://m.media-amazon.com/images/I/61diUmT6sBL.jpg) ![Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - Image 5](https://m.media-amazon.com/images/I/61dDl7K1JEL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Frequently Bought Together - Brock String Front Sight Focus String Combo Pack, Three 6-Foot, Vision Convergence Training Tool, Great for Shooters, Front Sight Training and More! - SADIKALO 6Pcs Eye Exercise Chart - Visual Muscle Relaxation Office Classroom Wall Decor Myopia Dry Eye Office Gifts Waterproof Posters Card Desk Sign for Home School Kids Students Office Coworkers - Brock String - Vision Convergence Training - Convergence Insufficiency Tool - Train Vision, Athletic Performance, and More!, White, 6 foot --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/55273442-vision-convergence-insufficiency-training-tool-for-eye-muscle-strengthening-focus](https://www.desertcart.tn/products/55273442-vision-convergence-insufficiency-training-tool-for-eye-muscle-strengthening-focus) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-05*