{"product_id":"brock-string-vision-training-tool-3-beads-binocular-exercise","title":"Brock String Vision Training Tool | 3 Beads Binocular Exercise","description":"\n\u003ch2\u003eBrock String Vision Training Tool – 3 Beads, 260cm Cord\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBrock String\u003c\/strong\u003e is a classic, optometrist-recommended vision training tool designed to develop stronger binocular function — helping both eyes work together more accurately. Whether you're working with a vision therapist, a sports performance coach, or doing at-home eye coordination exercises, this lightweight, easy-to-use string-and-bead tool is a trusted training essential.\u003c\/p\u003e\n\n\u003ch3\u003eWhat Is a Brock String?\u003c\/h3\u003e\n\u003cp\u003eA Brock String is a long cord fitted with three colored beads. By holding one end of the string to the tip of your nose and anchoring the other end to a fixed point, you can perform structured focusing drills that train your eyes to converge accurately on a target — a skill critical for reading, sports, and everyday visual tasks.\u003c\/p\u003e\n\n\u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDevelops binocular coordination\u003c\/strong\u003e — trains both eyes to point accurately at the same target simultaneously\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImproves convergence ability\u003c\/strong\u003e — ideal for vision therapy exercises targeting eye teaming and focusing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSports vision training\u003c\/strong\u003e — used by athletes to sharpen targeting, depth perception, and visual tracking\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePortable \u0026amp; lightweight\u003c\/strong\u003e — comes with a carry case so you can train anywhere\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSuitable for all ages\u003c\/strong\u003e — commonly used in occupational therapy, sports training, and home vision programs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBead diameter:\u003c\/strong\u003e 1.8 cm (0.7\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRope length:\u003c\/strong\u003e 260 cm (102\")\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBeads included:\u003c\/strong\u003e 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage includes:\u003c\/strong\u003e 1 × cord, 3 × beads, 1 × carry case\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eNo batteries required\u003c\/strong\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to Use\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eTie one end of the string to a fixed point (door handle, chair, or wall hook) at eye level.\u003c\/li\u003e\n  \u003cli\u003eHold the other end lightly against the tip of your nose.\u003c\/li\u003e\n  \u003cli\u003eSpace the three beads along the cord at varying distances (e.g. 30 cm, 60 cm, and 100 cm).\u003c\/li\u003e\n  \u003cli\u003eFocus on each bead in turn — when both eyes are working together correctly, you will see the string form an \"X\" shape at the bead you are focusing on.\u003c\/li\u003e\n  \u003cli\u003ePractice shifting focus from bead to bead to build convergence and eye-teaming skills.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/200-pack-disposable-eyeglass-leg-sleeves-hair-coloring-protector\"\u003e200-Pack Disposable Eyeglass Leg Sleeves | Hair Dye Protector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/25-in-1-precision-magnetic-screwdriver-set-pro-repair-tool-kit\"\u003e25-in-1 Precision Magnetic Screwdriver Set | Pro Repair Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to lighting conditions and monitor display variations, bead colors may appear slightly different from the actual product. Measurement tolerance is ±1–3 cm.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.nei.nih.gov\/learn-about-eye-health\" target=\"_blank\" rel=\"noopener\"\u003eNational Eye Institute on eye health\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the Brock String vision training tool used for?\u003c\/h4\u003e\n\u003cp\u003eA: The Brock String is used to develop binocular vision function — specifically training both eyes to converge accurately on a target. It is commonly used in vision therapy programs, sports performance training, and home-based eye coordination exercise routines to improve eye teaming and focusing ability.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the Brock String suitable for children as well as adults?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The Brock String is suitable for users of all ages. It is frequently used by both children and adults in vision therapy, occupational therapy, and sports training settings. Always follow the guidance of a qualified vision therapist or optometrist for a structured program.\u003c\/p\u003e\n\u003ch4\u003eQ: What is included in the package?\u003c\/h4\u003e\n\u003cp\u003eA: The package includes one 260 cm (102\") cord, three colored beads (1.8 cm diameter each), and one carry case — everything you need to begin practicing binocular coordination exercises right away.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the Brock String vision training tool used for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The Brock String is used to develop binocular vision function — specifically training both eyes to converge accurately on a target. 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