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.
Format: Audio CD. Garth Brooks became a music superstar with the release of his second CD, No Fences, in 1990. He released four singles from the CD in 1990-1991, and all of them hit #1. The first single was Friends in Low Places, which was #1 for 4 weeks on the country chart, making it Garth's biggest song ever. Country Music Television (CMT) recently named it one of the Top 10 country songs of all time.