
I really didn't know what to expect. There is currently only one type of prism eyewear available from Revain. The frames seem relatively strong, but the weight is lighter than I expected. I think the build quality is on par with cheap e-readers and gas station sunglasses. This type of glasses is 0% stylish anyway, I think an even more eccentric form-follows-function design with squarer edges would look better... These glasses are a cool gadget for watching movies and TV shows while lying down. As gimmicks and taking into account the price, I gave them 5 points, but there are small drawbacks: - there is some reflection and a limitation of the field of view by prisms - objects almost look like in a mailbox with blurred edges on the left and right - there is no magnification in the optical system, objects and text only appear 80% - 90% smaller in size. On the plus side, I was able to wear the glasses over my reading glasses, which helped me read smaller texts. Having tested these glasses I would definitely recommend them for relieving the strain on your neck while reading, watching TV or watching a movie if for any reason (medical or "lazy") you need to lie down or recline. I read in a review that I had double vision, didn't realize it, but if the distance between your eyes is out of reach or the prisms are somehow not parallel, this can happen. If you're having trouble seeing through your binoculars and can't focus right away, it's sometimes difficult to get a good 2D image with depth perception. If you have trouble with this, it can be helpful to close one eye and switch gazes several times to "retrain" your eyes and brain. Of course it would be great if there were more sizing or customization options for these types of glasses but at this price you really can't expect more and if that doesn't work use them as stocking fillers for Christmas or give them back. ...

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