The refractive index of current eyeglass lens materials ranges from 1.498 (CR-39 plastic) to 1.74 (a specific variety of high-index plastic). So for the same prescription power and lens design, a lens made of CR-39 plastic will be the thickest lens available, and a 1.74 high-index plastic lens will be the thinnest.
Principal photography on the film began on April 25, 2016, in Pittsburgh, Pennsylvania, in the Hill District, and wrapped in mid-June 2016. Fences was released in the United States on December 16, 2016, by Paramount Pictures, received positive reviews and grossed $64 million.
The movie was released in theaters in the United States on November 19, 2004 by Paramount Pictures. The movie was first aired on TV on November 12, 2006, during the Best Day Ever marathon. It was distributed in Switzerland, Spain, and Netherlands by Universal Pictures. On March 29, 2011, Paramount released the movie on Blu-ray. On December 30, 2014, Paramount re-released the movie on Blu-ray.