The word Chamomile comes from the Greek meaning ground apple, probably because of its apple-like fragrance. The Romans used Chamomile for incense. Roman Chamomile gained its name, not from ancient Rome, but because a 19th century plant collector found some growing on the ruins of the coliseum in Rome.
What Is Perfect Vision? In cases of normal vision, also called perfect vision or 20/20 vision, the eye is able to focus light from objects precisely on the retina at the back of the eye. Refractive errors occur when the eye is unable to properly focus light on the retina.
The f- number of the human eye is about 2.55, whereas for a standard Camera it is 1.8, and the most sensitive vision is of the deep sea Crustacean Gigantocypris (f-0.25). The position of eye over the head decides the field of vision. There are two types of fields of vision viz., the field of view of an individual eye, and overlapped portion of field of view (binocular field). When the eyes are on either side of the head, view is almost panoramic, but there is a loss of stereoscopic depth perception.