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
She Has a Name with you long after the lights have gone up." She Has a Name She Has a Name is a play about human trafficking written by Andrew Kooman in 2009 as a single act and expanded to full length in 2010. It is about the trafficking of children into sexual slavery and was inspired by the deaths of 54 people in the Ranong human-trafficking incident. Kooman had previously published literature, but this was his first full-length play. The stage premiere of "She Has a Name" was directed by Stephen Waldschmidt in Calgary, Alberta in February 2011. From May to October 2012,