Imagine this scenario. An adorable little girl, Kaitlin who is soon to be 5 years old and getting ready to go into Pre-Kindergarten. But, before she starts school her parents decide to have her eyes examined with their local optometrist. Mom takes her to her appointment and comes home to an eagerly awaiting Dad who asks, “Honey, how did Kaitlin do at the eye doctor today?” Mom replies, “Oh, she did fine and actually seemed to have fun with all of Dr. Smith’s tests. There’s only one thing…the doctor said her left eye has a problem. Dr. Smith said she has amblyopia.” Surprised by this news Dad quickly replies, “Huh…what’s amblyopia?” Mom retorts, ” Dr. Smith says amblyopia means lazy eye. Kaitlin can’t see normal with her left eye… even with glasses! It’s really bad, something like 20/100! So, now Kaitlin has to get glasses and wear an eye patch on her right eye every day for 2-6 hours for about 6 months to a year!” Dad responds, “Well I guess if that’s what she has to do, then she will just have to wear the patch.” “Oh yea” says Mom, “I tried putting on the patch for a little bit today and Kaitlin got really upset and threw a fit!”
The point of this little story is we have this happy-go-lucky 5-year-old previously getting along in her world without any awareness that her left eye had the most common form of reversible blindness (that affects 1 in 50) children, known as amblyopia. Before this news, Kaitlin could do all the things the other kids could do. Play on the play ground, chase a soccer ball, color in her coloring books and even was beginning to learn how to recognize letters. But, now she is being faced with a prescription for treatment that will throw her “normal world” upside down for 2-6 hours a day. A treatment that has been taught all eye doctors and research has shown can be effective for patients as long as they comply with the treatment protocol. After all, how hard can it be to wear an eye patch for 2-6 hours per day for 6 months to a year? No problem right?
Well, just in case you would like to find out, allow me to suggest this simple experiment. But first, a word of warning, before you attempt, do not try this while driving a vehicle or operating machinery.
To start, if you wear corrective lenses begin by smearing some oil or other similar substance on both lenses to make them foggy. Then take some adhesive tape and cover one of the lenses to that it is completely occluded. Now put on your glasses and look around your environment. Try something simple like watching TV from a chair. Next get up and move about the room… but don’t try a stairway! Tired of that, well then sit down again and reach for a newspaper, magazine or book and try to read. Take a pen and paper and make a list of what you can see in the room. How does this make you feel? Anxious, frustrated, uneasy, off balance? Now imagine you are 5 years old and just learning how to read or write. You used to like to run around out doors and chase a soccer ball but now it is so much more difficult. You want to rip off the patch, but now imagine that your parents taped the patch on your skin so that you could not remove it. What type of emotional toll would this have on you?
Yes, occlusion (patching) therapy alone as treatment for amblyopia takes an emotional toll. What’s more there is emerging research that concurs. Published in the JBO – Volume 23 – Issue 1 is the research paper entitled: Parental Understanding and Psychosocial Impact of Occlusion Therapy on Amblyopic Children and Their Parents. One of the concluding statements from this research on eye patching for amblyopia was the following: “The occlusion therapy was a difficult experience for a majority of parents and their children. Many parents reported undue distress, difficulty, and a psychosocial impact secondary to occlusion therapy.”
Therefore, the research agrees with what you probably experienced if you tried my previously suggested occlusion therapy simulation. Patching is stressful! Stressful to the young child and to the parents. And yet, what parents and the public needs to know is that occlusion therapy, when done alone, is no longer the standard of care.Yes, evidence based research shows that a binocular vision therapy approach is a more effective treatment for amblyopia vs occlusion only therapy. Plus, because it does not rely on having the child wear an eye patch for 2-6 hours a day, the negative psychosocial and emotional side effects are eliminated.
So when you hear eye patching for amblyopia think the Ford 1912 Model-T automobile. Known as one of the first successful automobiles produced nearly 100 years ago. But for today, well It might get you to your destination or it might break down. And it surely won’t be a comfortable ride.
On the other hand, binocular vision therapy is like the 2012 Ford Focus. A car of today using the latest technology to make your ride is safe, reliable and comfortable. Plus, you might have some fun long the way!
In this video you will see an example of binocular office-based optometric vision therapy that utilizes the latest technology you will see our young patient experiencing binocular stimulation in an activity that uses 3-D technology on the VTS-4. This and many other examples are part of a comprehensive binocular vision approach for treatment of amblyopia that yields the best outcomes without the unwanted emotional stress of occlusion therapy.
You you can find more articles on amblyopia compiled in the VisionHelp Category Cloud “Amblyopia” or click here. To find a doctor who provides office based optometric vision therapy including binocular vision therapy for amblyopia, go to www.covd.org and click on “Locate a Doctor”.
Dan L. Fortenbacher, O.D., FCOVD
I am really happy to see this article. Dr. Fortenbacher. You have raised a very significant point in the way we treat Amblyopes, especially children. During the span of my 40 years as a vision therapy practitioner, I have on numerous occasions pondered why the patient dislikes to look through the non-active eye. Years ago I came to the conclusion that the reason is simply, they don’t want to see out of this eye, AND, there must be a good reason for this. In my clinical work I made it a point to find out why? Is it possible to isolate certain perceptual experiences from the patient, while doing normal monocular and binocular vision therapy. I closely observed when the visual acuity was improving and what aspects of their life were they becoming clearer about. It appears that each human being has access to specific perceptual mechanisms for handling the massive complexity of information entering the eyes. The manner of the suppression, the refractive findings, and the way they process through both eyes reveals their personal code. And, this is different through each eye, in the way they process information. I have found this information to be of great help in guiding the patient in reducing their need to suppress their perceptions through one eye. I am happy to share more if you and others are interested. Thanks again for this fine contribution to the literature.
Thank you Dr. Kaplan! I’m glad that you found this helpful and certainly concurs with your experience. For those of us who have provided binocular vision therapy it is often easy to forget that most parents of children with amblyopia only hear about “patching only” treatment unless their family eye doctor works with a specialist in their community who provides office-based optometric vision therapy. We call those doctors the “bright spots” and I wrote a VisionHelp post https://visionhelp.wordpress.com/2012/05/22/convergence-insufficiency-a-diagnosis-that-begins-with-bright-spots/ . Given the magnitude of amblyopia in terms of numbers, it is important for parents with a child with amblyopia to find a doctor who enjoys working with children and if they do not provide binocular vision therapy will consult with a specialist in their community who does. More and more doctors are working together to provide the best care for the child with amblyopia.