The Acunis FL-41 filters are designed to protect against unpleasant glare and help those with light sensitivity due to migraines, traumatic brain injury and other eye conditions. Acute light sensitivity is a common side effect of migraines and other eye diseases and can aggravate their symptoms. 

In contrast to conventional sunglass lenses which attenuate all light wavelengths evenly, the Acunis lenses reduce the transmission of select light wavelengths responsible for glare, thereby providing a more comfortable viewing experience. 

The anthracite frames are lightweight and have a fashionable design.