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
Flower A. Newhouse 9, 1994) was born with eye infections and had her eyes removed surgically at the age of five and went to live in a school for the blind. She married Albert William Carson (June 13, 1893 - Jan. 6, 1975) on Dec. 22, 1933 in Los Angeles, California. According to her mother, as a child Flower first began to reveal the abilities of clairvoyance, which were prevalent throughout her life. From childhood Flower revealed that her life purpose was to live and teach the way of Christian discipleship and esoteric Christian mysticism through an ever deepening experience of God and