There are three classification systems for individuals with visual impairment that are used by education professionals. To be declared legally blind, an individual must have visual acuity of 20/200 or less, or have a field of vision restricted to 20 degrees or less at the widest point. However, this federal classification system is used primarily to determine eligibility for adult agency services.
have an eye for something. to be good at noticing a particular type of thing She has an eye for detail. He had an eye for the unusual and the exotic which made him a very good shopping companion. See also: an, eye, for, have.
The Eye of Horus is an ancient Egyptian symbol of protection, royal power and good health. The eye is personified in the goddess Wadjet (also written as Wedjat, or  Udjat , Uadjet, Wedjoyet, Edjo or Uto).It is also known as ' 'The Eye of Ra' '.unerary amulets were often made in the shape of the Eye of Horus. The Wadjet or Eye of Horus is the central element of seven  gold, faience, carnelian and lapis lazuli  bracelets found on the mummy of Shoshenq II. The Wedjat was intended to protect the pharaoh [here] in the afterlife and to ward off evil.