Will this improve bad case of myopia in adolescent?

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.

Will this exercise help achieve fusion if the eyes are slightly turned inwards, rather than outwards?

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.

How long do you needto do this to get results?

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.

Does this fix eye asymmetry?

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

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

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

Product ID: 254108556

Details

Brand
Brock String
Material
Plastic
Recommended uses for product
Exercise and
Special features
Perlenbesetzt
Target audience
Adult

🎯5 precision-positioned beads for targeted focus

💪Durable high-quality string for consistent use

📏10-foot length for versatile training

₪67

Duties & taxes included

In stock

Sold byAmazon IsraelDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Israel.

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Description

👁️‍🗨️ Sharpen your vision, strengthen your focus, and never miss a moment!

BUILT TO LAST - High-quality durable string ensures long-term consistent performance
PRECISION FOCUS - 5 tightly fitted beads enable targeted convergence and agility exercises
TRAIN LIKE A PRO - 10-foot Brock String designed for mid-distance eye muscle strengthening
COMPLETE GUIDANCE - Includes clear instructions to maximize your vision training results
TRUSTED BY EXPERTS - Top-rated tool (#33,551 in Sporting Goods) with 4.4-star user approval

The Brock String is a 10-foot vision training tool featuring 5 tightly fitted beads on a durable string, designed to improve eye muscle strength, focus, and agility. Ideal for convergence insufficiency and sports vision training, it comes with instructions and is highly rated by users seeking professional-grade eye exercises.

Specifications

ASIN	B01MEFCDD1
Best Sellers Rank	#33,551 in Sporting Goods ( See Top 100 in Sporting Goods ) #139 in Racket Strings
Brand	Brock String
Brand Name	Brock String
Color	White
Customer Reviews	4.4 out of 5 stars 725 Reviews
Grip Material	Plastic
Handle Material	Plastic
Handle material	Plastic
Item Length	10 Feet
Item Weight	0.02 Kilograms
Manufacturer	NeuroVision
Material	Plastic
Model Number	7.22512E+11
Other Special Features of the Product	Perlenbesetzt
Part Number	7.22512E+11
Recommended Uses For Product	Exercise and Fitness
Recommended uses for product	Exercise and Fitness
Special features	Perlenbesetzt
Target Audience	Adult
Target audience	Adult
UPC	722512368781 860007923081
Unit Count	1.0 Count

Reviews

F**S

…

Bom

6.06.2026

S**O

A good length of string.

Broc strings require patience and consistency of use. This one, unlike most on the market, is actually of a decent length, long enough for those of us training our eyes to see at mid-distance. One word of caution: don't be tempted to remove or rearrange the balls, as it is almost impossible to thread them back on the string. Good value. Give it a try!

1.09.2025

A**N

Disappointing

Instructions were not included as specified in the product details. Disappointing

9.05.2025

W**N

Troppo caro per un cordino e 5 pallini di plastica colorata

È utile ma vale un decimo del prezzo che l'ho pagata. Potete farvela da soli

7.12.2025

A**E

Fehlerhafte Beschreibung und irreführende Produktbilder

Keine Anleitung wie in der Beschreibung dabei gewesen. Auch waren nur 3 Perlen mit dabei und keine 5 wie auf den Abbildungen.

23.06.2026

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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₪67

Duties & taxes included

In stock

Sold byAmazon IsraelDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Israel.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews