Patient Resources - Homonymous Hemianopia
Welcome! If you’re here, we’re assuming you or a loved one have been fit with Peli Lens ™ training prisms. You’re on your way to experiencing more visual awareness. We created this page to help you get the most possible benefit out of your training prisms.
If you like the training prisms, you’ll love full-power prisms because they offer almost double the benefit.
If you have questions, we encourage you to reach out to your doctor first. But we’re here to help if you need more.
Printable Instruction Guide
Our printable guide gives you the highlights of what you need to know about using your training prisms. It also includes a lens tracing area in case your doctor did not perform a lens tracing for you. We highly recommend you read this immediately so that if your prisms fall off you can reattach them.
Using Your Training Prisms
Training prisms are ideal for situations when you are mobile, like shopping and walking, but not as helpful for stationary activities like reading or watching tv.
Placement
It is very important that you look between the prisms to get the benefits of the expanded visual field. Looking directly through the prism will cause double vision. This is undesirable. When first worn, peripheral prisms create a certain level of visual confusion. You try to distinguish what information is in your blind field, and what information is in your seeing field. The goal of training is to minimize this confusion.
How to Reattach Your Prisms
In the event that a prism falls off your lens, use the tracing template below to reapply your training lens.
- Align prisms on lens to prisms on template.
- Trace around the edge of your frame.
- Use the trace of your frame to reapply prism.
Cleaning and Caring for Your Prisms
Important: Do not remove prisms from spectacle lens for cleaning. For proper care of your temporary prisms, follow the instructions below. If the prisms become discolored or permanently detached, see your eye care professional for replacement.
- Rinse spectacle lenses under a gentle stream of warm running water. If contaminants remain after rinsing, use a brush to clean grooves.
- Pat or blot dry with a soft, lint-free cloth.
- Follow any special cleaning procedures as instructed by your eye care specialist.
Training with Your Prisms
We want you to get the most out of your prisms. What we’ve found is that the more effort you put into practicing and using your training prisms, the more you’ll get out of them.
Studies have shown that spending as little as 20 minutes a day performing the exercises below dramatically increases your ability to detect information on your blind side. If you follow that timeline as your guide, you should be able to do about 6 hours of training before your follow-up appointment, which is ample time to get you accustomed to and comfortable with them.
We recommend practicing with your prisms in situations where you will wear them frequently such as: grocery shopping, walking your dog, golfing, going to the mall, etc.
Training with Reach and Touch
With a Buddy: While you fixate on the nose of your buddy, they move their hand into your blind field. You point to and touch their hand as you detect it through the prism.
DIY Method: You can do this training by yourself by reaching and touching objects as you detect them through the prisms.
Training While Walking
Walk from uncluttered areas such as a hallway to progressively cluttered areas such as a living room filled with furniture as potential obstacles. Note your observations. When doing this exercise at home or in public places, you may want someone to assist you.
Permanent vs. Temporary Prisms
You may be wondering whether you need permanent prisms and why. We’ve found there are significant benefits that come from having permanent prisms rather than temporary ones. They include:
Increased Field Expansion
Permanent prisms offer 76% more field expansion than temporary prisms!
Increased Collision Detection
Permanent Prisms offer more than double the potential collision detection over temporary prisms. Walk confidently through a grocery store or a mall.
Better Quality
Permanent Prisms are made from a top quality PMMA acrylic, giving better contrast, and more visual field. And they’re glued into the lens using a resilient UV-cured adhesive. They simply won’t peel off or fall out.
Ask Us About Permanent Prisms
Peripheral Prisms are most helpful when you’re walking or driving. But really, how much of the time are you walking or driving? Chances are, not too much. But when you are, you need something quick to give you awareness of your blind field.
SLAM: Our Most Popular Permanent Prism
Chadwick’s SLAM technology is a single removable lens that attaches to your glasses lenses via magnets.
This makes it super easy for you to quickly and deftly attach the lens when you need field expansion, then remove it when you don’t.
In addition to our SLAM technology, we have many combinations of options to help fit both your lifestyle and your budget.
Additional Peli Lens™ Resources
Still hungry for more information about how the Peli Lens™ works? We get it. There’s a lot to absorb. Below are links to pages about how the Peli Lens™ works, driving with the Peli Lens™, and using the Peli Lens™ for improved mobility.
How the Peli Lens™ Works
An overview of the concept, the science behind the Peli Lens™, and its real-world application.
The Peli Lens™ for Driving
Visit this page to learn more about the Peli Lens™ for driving and considerations to take into account.
Find a Doctor
Need help finding a doctor to fit and prescribe the Peli Lens™? We’ve got you covered. Reach out to us directly and we’ll help you find the closest doctor to you.