These right angle prism glasses have two settings to help people confined to one position for a long period of time. In one setting, a person can lie down on a bed, and easily view the television without lifting their head. Change the prism setting, and a standing person who is unable to lift their head can see straight in front of them.
Changing the setting requires removing a small hand screw and resetting.
Review this Product Love the concept, but the headband is flimsy.
Posted By: Renata Brenner Date Posted: 2019-11-20 11:10:12
My neck is fused skull to C6 andI have used regular fixed angle prism glases since I first saw them in The Bucket List. I was excited to find prism glasses that allowed me to adjust the angle.
Unfortunately the headband/ frame is lightweight plastic, doesn't support the weight of the lenses well, and is flimsy fragile. Despite keeping them in their case, they broke after a short time.
I contacted the retailer hoping I could, at least order a replacement headband/frame and was told that my only option was to purchase a whole new pair.
I wish that these lenses were available with the type of headband uses for the Optivisor.
Until it's redesigned with a sturdier headband, I can't recommend it.