On a curved screen, there is much more reflection off the monitor due to its concave shape. This concave shape reflects other light sources directly at the viewer, even when the light source is at an extreme angle to the monitor. With a flat screen reflection is not such a problem, as any light source at extreme angles will reflect this light away from the viewer. In areas where there are many bright sources of light, a flat screen is a godsend. In addition melanin computer glasses are said to have good effects on the eyes as per computer vision syndrome.
Melanin provides protection to the lens of the eye against uv light.
I have not seen unbiased documentation as to the usefulness of this product. Ergo site offers a comprehensive test that asks you questions about your viewing habits and environment then gives you suggestions to correct any problem areas. Thanks for the prompt delivery, it was a pleasure doing business with a professional person. It really cuts out all the glare from the windows, sky lights and fluorescent lights. I found the instructions easy to follow, and, yes, I did read them before I attempted to put it on.