Do all people with homonymous hemianopsias benefit from visual field expanders?
No. While we can help many patients with visual field expanders, some patients adapt to their visual field loss quickly and function well without them. It is also dependent on the patient’s goals. A retired individual staying at home and functioning well within this or her home may not benefit as much as a patient who wishes to return to work or drive. I tried press-on prisms on my glasses years ago and i didn’t like it. Are systems different now? Unfortunately, press-on prisms have been over used and often in manners that were not effective. The modern visual field expanders have better quality of the image as they are made of high quality optical plastics. Additionally, in the past prisms were placed on both eyes. We know today that that is not an effective method. The new types of visual field expanders, when prescribed by doctors experienced in hemianopsia rehabilitation and combined with appropriate saccadic eye movement therapy provide better outcomes. After my stroke, they put p
