AMD Clinical Trial
Official title:
A Randomized Controlled Trial of Eccentric Viewing Training vs. Closed Circuit Television Use for Visual Rehabilitation From Age-Related Macular Degeneration
Patients with advanced Age-Related Macular Degeneration will be randomized into one of two treatment groups. One group will receive eccentric view (EV) training while the other a closed circuit television (CCTV) training for 6 weeks. Reading speed and accuracy will be assessed pre- and post- treatment to determine if one treatment is superior to the other.
Age-related macular degeneration is the single most common cause of visual impairment in
Canada, affecting people over the age of 55 years. It causes loss of central, detailed
vision, resulting in difficulty with fine vision tasks, such as reading and writing. At
present there is no fully effective prevention or treatment for this condition, but people
do benefit from visual rehabilitation. Two of the most common rehabilitation techniques are
eccentric viewing training and an electronic magnification system called a Closed circuit
television (CCTV). In eccentric viewing training the person is taught to use his or her
remaining side vision, instead of central vision. The CCTV provides high levels of
magnification to compensate for the loss of detail vision. The purpose of this randomized
clinical trial is to compare the effectiveness of these two interventions. In the study
people will be randomly assigned to either receiving eccentric viewing training or a CCTV.
This will happen after they have received basic, optical low vision services and training
through the CNIB. We will assess their performance with either the CCTV or EV training with
a variety of reading tasks and questionnaires. The results will give evidence for how it is
most beneficial to use resources and as such will be very important in future planning of
low vision services.
Hypothesis: Eccentric Viewing Training will improve reading speed over CCTV by at least 10
words per minute in patients with advanced AMD.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Supportive Care
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