Human eye The upper end of the range is given in terms of normal visual performance as 10 cd/m (100,000,000 or one hundred million candelas per square meter). The eye includes a lens similar to lenses found in optical instruments such as cameras and the same physics principles can be applied. The pupil of the human eye is its aperture; the iris is the diaphragm that serves as the aperture stop. Refraction in the cornea causes the effective aperture (the entrance pupil) to differ slightly from the physical pupil diameter. The entrance pupil is typically about 4 mm in diameter, although it
The Eye (2008 film) The Eye (2008 film) The Eye is a 2008 American supernatural horror film directed by David Moreau and Xavier Palud, scripted by Sebastian Gutierrez, and starring Jessica Alba, Parker Posey, Alessandro Nivola, and Rade Šerbedžija. It is a remake of the Pang Brothers' 2002 film of the same name. Sydney Wells is a successful classical violinist from Los Angeles who has been blind since she was five years old, caused by an accident with firecrackers. Fifteen years later, after celebrating conductor and pianist Simon McCullough's birthday during rehearsal, Sydney undergoes a cornea transplant, which causes her eyesight to return, a