Not bad for the price

For the price I paid I cannot complain about the product. They help reduce eye strain while reading, either on the computer, smart phone, or hard copy books. I prefer to use these compared to cheap reading glasses, which create eye fatigue. My main complaint mainly about these particular pinholes is that they create a haze under certain lighting conditions, mainly when there is sunlight in present. I believe this is due to the reflective properties of the type of plastic material used. When there is less intense daylight they work much better. I have another pair of pinholes which work better in all light conditions and produce less distortion, but which cost much more..

Verified purchase: Yes