shutter shades

Etymology
From the trademarked name of a brand of sunglasses created by Shutter Shades, Inc., in 2007. Similar louvered/slatted sunglasses which existed as early as the 1950s and were popular in the 1980s were known by other names, such as "Venetian blinders".

Noun

 * 1) A style of sunglasses which have frames containing horizontal slats as opposed to tinted lenses.