Hi Ed,
I realized I didn't make something it clear (I hope I explain this correctly.)
I think there are two kinds of light-
1. The light emanating from the display/screen
2. The invisible light coming from the system/camera which is bouncing off the user's eye, and making the eye gaze system work. This is the light which is drying and irritating, and that is causing the damage. (If you look at the "eye image" used to calibrate a lot of the system, the eye looks really bright.)
I'll do a little research and see if I can find more info.
Margaret Cotts
Low Tech Solutions
From: Edward Hitchcock <xxxxxx@ric.org>
To: "'xxxxxx@alsa.simplelists.com'" <xxxxxx@alsa.simplelists.com>
Sent: Tuesday, February 14, 2017 7:09 AM
Subject: [no phi] RE: Eye issues for PALS-A good eye lubricant?
Yeah good point. Seems like most of the manufacturers have moved to muted and black colors for that reason. But I do not have a good handle on how to evaluate
which emits less light… Makes for good times reprogramming for my clients with Low vision too!
I wonder if a light meter or something like that exists that could kind of tell us which was worse?
Ed Hitchcock OT/L
Technology Center
Rehabilitation Institute of Chicago
From: xxxxxx@alsa.simplelists.com [mailto:xxxxxx@alsa.simplelists.com]
On Behalf Of Margaret Cotts
Sent: Monday, February 13, 2017 9:16 PM
To: xxxxxx@alsa.simplelists.com
Subject: Re: Eye issues for PALS-A good eye lubricant?
Non-lubrication related, but I thought I would toss it out there.
(Full disclosure- I was a rep for LC Technologies at the time...)
Several years ago I worked with a power eye gaze user who had had major eye dryness and irritation from using the Tobii-Dynavox system because it emitted
so much light. She would have to take weeks off at a time without using the device.
She ended up switching to the LC Technologies Eye Gaze system, because it emits significantly less light, and it was a lot easier on her eyes.
(I'm sure that there are other folks on this list who could speak to better to this than I can. I've been out of the direct service loop for a while.)
P.S. Full disclosure, I worked for Dynavox for a while, too ;-)
I want to reinforce Ed's recommendation for getting an ophthalmologist to see the patients. I would be reluctant to have folks get either a prescription
or OTC product without an ophthalmologist consult. There is a nontrivial risk of doing harm.
Richard Hurtig, PhD,
Department of Communication Sciences & Disorders
Great timing. I have a patient at clinic today whose using a Tobii and his eyes are getting very dry and irritated. I remember one of my patients used
a prescription eye lubrication. Does anyone know the name of a good eye lubricant that is over the counter or by Rx? Thanks!
Sincerely,
Amy Roman, MS, CCC-SLP
Augmentative Communication Specialist
Forbes Norris ALS Research and Treatment Center
2324 Sacramento Street
San Francisco, CA 94115
Cell (415)518-0592
Fax (415)600-3778
Dry eyes are definitely a known issue, even regardless of the problem of corneal damage (which we would want to avoid for obvious reasons).
At a minimum, he should be getting consistent lubricating eyedrops. One of my PALS used goggles for a while as well which had kept her eyes hydrated.
I would also recommend an appointment with an ophthalmologist if at all possible.
One last minor detail; if he is using a Tobii eye gaze device, that device needs to see both eyes in order to operate (even if it is set
to track one eye only).
Rehabilitation Institute of Chicago
Keeping XX's eyes lubricated is critical. Corneal damage could render him
blind. A problem with the eyegaze system may be due to light scatter as a consequence of the liquid tears being used. I would recommend an ophthalmologist see XX and make recommendations
to allow XX to continue to use eyegaze system.
Richard Hurtig, PhD,
Department of Communication Sciences & Disorders
Hello fellow Listservers,
I am seeking advice for a professional that reached out to me below. Any ideas, insight appreciated.
I was recently up at XX Regional Vent Center and was working with the SLP re: device issues with XX. He is unfortunately declining and
at this time cannot close his eyes. As a result, he ends up getting some film on his eye, at times some visible sentiment….this is affecting the eye gaze camera from effectively activating to his pupil. He’s had pink eye frequently and is prescribed intermittent
eye drops but does not use anything currently. They do tape his eyes shut at night to rest them, and I recommended taping one eye to allow for access with one eye only, but this didn’t result in increased accuracy accessing his device-the film on the eye seems
to be the biggest barrier. Are you aware of any eye care, eye wash, product, or process completed by nursing, etc. that has been beneficial for staff in your experience that we can recommend for XX, so that he can more effectively use his communication device?
Alisa Brownlee, ATP, CAPS
Assistive Technology Specialist/Consultant
The ALS (Lou Gehrig’s Disease) Association National Office
RESNA Certified Assistive Technology Professional
NAHB Certified Aging in Place Specialist in Home Modifications
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