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.
, Movies aren't just men in capes. According to the DVD FAQ on DVD Demystified, the first feature films released on DVD were four films released in DVD on Japan on December 20, 1996: Point of No Return (known as The Assassin outside the US), Blade Runner, Eraser, and The Fugitive.