--- product_id: 254108556 title: "Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility" brand: "brock string" price: "536 kr" currency: NOK in_stock: true category: "Brock String" url: https://www.desertcart.no/products/254108556-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle store_origin: NO region: Norway --- # 5 tightly fitted beads for precise focus points Durable high-quality string for consistent use 10-foot length for versatile training Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility **Brand:** brock string **Price:** 536 kr **Availability:** βœ… In Stock ## Summary > πŸ‘οΈβ€πŸ—¨οΈ See sharper, perform stronger β€” don’t miss out on elite eye training! ## Quick Answers - **What is this?** Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility by brock string - **How much does it cost?** 536 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/254108556-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 - β€’ **Built to Last:** High-quality, durable string ensures long-term use without wear or bead displacement. - β€’ **Precision Focus:** Five tightly fitted beads create multiple convergence points to sharpen your eye coordination. - β€’ **Train Like a Pro:** 10-foot length designed for mid-distance eye muscle workouts, perfect for serious vision training. - β€’ **Complete Guidance:** Includes clear instructions so you can start improving your vision agility immediately. - β€’ **Trusted by Experts:** Top-rated tool (#95 in Racket Strings) with 4.4 stars from 700+ users who swear by its effectiveness. ## Overview The Brock String is a 10-foot vision training tool featuring five tightly fitted beads on a durable string, designed to improve convergence insufficiency and enhance sports vision. Trusted by thousands, it comes with instructions for effective eye muscle strengthening and focus exercises. ## Description 10 Foot Brock String is a vision performance training tool that is great for convergence insufficiency training, sports performance, and more! ## 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 | |---------------|-------| | ASIN | B01MEFCDD1 | | Best Sellers Rank | #11,678 in Sporting Goods ( See Top 100 in Sporting Goods ) #133 in Racket Strings | | Brand Name | Brock String | | Color | White | | Customer Reviews | 4.4 4.4 out of 5 stars (740) | | Grip Material | Plastic | | Handle Material | Plastic | | Item Length | 10 Feet | | Item Weight | 0.02 Kilograms | | Manufacturer | NeuroVision | | Material | Plastic | | Model Number | 7.22512E+11 | | Number of Items | 1 | | Number of Packs | 1 | | Other Special Features of the Product | Beaded | | Part Number | 7.22512E+11 | | Recommended Uses For Product | Exercise and Fitness | | Target Audience | Adult | | UPC | 722512368781 860007923081 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Brock String - **Material:** Plastic - **Recommended uses for product:** Exercise and Fitness - **Special features:** Beaded - **Target audience:** Adult ## Images ![Brock String, Vision Convergence Insufficiency Training Tool for Eye Muscle Strengthening, Focus Exercise and Agility - 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. ## 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 --- ## 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.no/products/254108556-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle](https://www.desertcart.no/products/254108556-brock-string-vision-convergence-insufficiency-training-tool-for-eye-muscle) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-09*