Treatment of convergence insufficiency with brock string

Published on
August 6, 2022

One of the most common conditions Dr. Wernick sees in the office is convergence insufficiency. Scientific studies show that the rate of convergence insufficiency in school-age children is between 2% and 13%, the most common statistic cited in these studies is around 5%.

Basically, it means your convergence, which is your working together to turn in when looking at something close up, isn't working the way we want it to or how your body needs it to.

What is a brock string and how is it used to treat convergence insufficiency?

The Brock string is one of the most basic treatment options. The eye doctor can send it to the patient at home or use it in the office to train convergence insufficiency. The way it works is that you will get a string from them and you will place the string at the tip of your nose along with some beads, and you will use one bead initially. You will move the bead out to a certain distance and the goal is to look at the bead. One of the most interesting aspects of this activity is that it analyzes whether you're using both eyes and whether both of your eyes are pointed at the bead. Oftentimes, our eyes do not point where we think they will point. We will be able to determine if our eyes are actually pointed at that point in space using the Brock string. So you will look at the green bead and you will see an X going in and coming out of it. 

Moving the bead closer to train your eyes to have better convergence

The next step for someone who needs to train convergence is to move the bead closer and to get the same pattern. You can train your convergence system by working that bead closer and closer so that you know if both eyes are on and working properly. Also, you can alter the conditions to improve your convergence. 

Can you treat convergence insufficiency at home?

Training the visual system is complex, and all treatment should be done under the guidance of a functional or developmental optometrist. Many times treatment will take place in an office or on zoom under the guidance of a vision therapist with homework done at home on a daily basis.

Schedule a functional eye exam at Amplify EyeCare Manhattan

Since convergence insufficiency is so common in children, we recommend scheduling a child for a functional eye exam around the time they start reading.  It is especially important to schedule an eye exam if you notice that your child is exhibiting symptoms that may indicate convergence insufficiency. Common symptoms include such as eye strain, double vision, headaches , blurred vision when looking at something close up, tired eyes, letters moving around on the page, and frequently losing their place when reading.We look forward to providing you with expert eye care. To schedule an appointment, please call (212) 752-6930 or fill out our contact form Book an Appointment .

Testimonials


  • At Amplify with Dr Wernick I was seeking help for seemingly intractable, probably age-related dryness. I've seen other doctors about it, and that has been helpful, but what he explained to me about it and the careful way he answered all my questions gave me so much more of a clear understanding of what is going on (and is not) that I am more able to implement all his and others' recommendations than I was before. And he gave me additional resources for further follow-up. I am most grateful.


    Cynthia Norton

  • Wow! This is a great Eye Care medical facility. I was thoroughly examined by Dr. Pinkhasov for over 2 hours. She made sure to check my eyes for pretty much everything and patiently explained proper care for my eyes. They definitely know how to provide great care and treat their patients right. Now I know why they have such a great reputation and been around for so long.


    Steve Fay

  • Dr. Kavner is a gifted diagnostician and orthoptic therapist. He treated me several decades ago for a condition similar to dyslexia. I was having migraines five times per week. I worked with him for about a year and I experienced tremendous improvement (down to 3-4 per year) that has lasted.


    Mary K.

  • Dr. Kavner recommended two types of eye therapy for my daughter. One of them using bio-feedback. In just three sessions she is seeing considerably better. She shouted this morning: Ooh my God! I could not see these letters with my glasses on, and now I can see them without my glasses. If you are willing and able to invest in improving your vision, this is a good place to go to!


    Peter G.

  • Dr. Kavner recommended two types of eye therapy for my daughter. One of them using bio-feedback. In just three sessions she is seeing considerably better. She shouted this morning: Ooh my God! I could not see these letters with my glasses on, and now I can see them without my glasses. If you are willing and able to invest in improving your vision, this is a good place to go to!


    Kinkie F.

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