Visual impairment

Visual impairment, also known as vision impairment or vision loss, is a decreased ability to see to a degree that causes problems not fixable by usual means, such as glasses. Some also include those who have a decreased ability to see because they do not have access to glasses or contact lenses. Visual impairment is often defined as a best corrected visual acuity of worse than either 20/40 or 20/60. The term blindness is used for complete or nearly complete vision loss. Visual impairment may cause people difficulties with normal daily activities such as driving, reading, socializing, and walking.

The most common causes of visual impairment globally are uncorrected refractive errors (43%), cataracts (33%), and glaucoma (2%). Refractive errors include near sighted, far sighted, presbyopia, and astigmatism. Cataracts are the most common cause of blindness. Other disorders that may cause visual problems include age related macular degeneration, diabetic retinopathy, corneal clouding, childhood blindness, and a number of infections. Visual impairment can also be caused by problems in the brain due to stroke, prematurity, or trauma among others. These cases are known as cortical visual impairment. Screening for vision problems in children may improve future vision and educational achievement. Screening adults may also be beneficial. Diagnosis is by an eye exam.

Blindness (disambiguation)

Blindness is a visual condition.

Blindness may also refer to:

See also

Blindness (novel)

Blindness (Portuguese: Ensaio sobre a cegueira, meaning Essay on Blindness) is a novel by Portuguese author José Saramago. It is one of his most famous novels, along with The Gospel According to Jesus Christ and Baltasar and Blimunda.

Plot summary

Blindness is the story of an unexplained mass epidemic of blindness afflicting nearly everyone in an unnamed city, and the social breakdown that swiftly follows. The novel follows the misfortunes of a handful of characters who are among the first to be stricken and centers on "the doctor's wife," her husband, several of his patients, and assorted others, thrown together by chance. After lengthy and traumatic quarantine in an asylum, the group bands together in a family-like unit to survive by their wits and by the unexplained good fortune that the doctor’s wife has escaped the blindness. The sudden onset and unexplained origin and nature of the blindness cause widespread panic, and the social order rapidly unravels as the government attempts to contain the apparent contagion and keep order via increasingly repressive and inept measures.

Alison

Alison may refer to:

People

Music

Media

Alison (given name)

Alison or Allison is a given name, usually a feminine name in English-speaking countries. It was originally a medieval French nickname for Alis, old form of Alice derived with the suffix -on or -son sometimes used in the former French nicknames such as Jeanson ("little Jean") or Pierson ("little Pierre").

The variant spelling Allison is the most common form in the United States. Other variations include Alisson, Allyson, Alyson, Alysson, Alicen and Alycen, with nicknames Allie, Alley, Alie, Ali, Ally, Aly, Aley and Alli.

Allison also has separate roots as a family name, in which case when used as a given name is traditionally masculine, and is of disputed meaning.

In countries including Brazil, Portugal and Indonesia, Alison and variant forms are also used as masculine given names.

Alison, variant form Alizon, is a French surname.

Popularity

The name is first recorded in Scotland in the 12th century. It was popular until the early 19th century and, spelled Allison, was the 45th most common name given to baby girls in the United States in 2005 (Allyson was #253; Alison, #259; Alyson, #468; Allie, #256; Ally, #656; and Alice, #414). In 1990 in the United States, Allison was the 228th most popular name for women of all ages; Alison was #347, Allyson, #775; Alyson, #981; Allie, #764; Ali, #2434; and Alice, #51. Alison in any spelling did not enter the top 100 baby names in 2005 in England and Wales.

Alison Henrique Mira

Alison Henrique Mira most commonly known as Alison (born 1 December 1995 in Santa Cruz do Rio Pardo, Brazil) is a Brazilian football player who since 2015 has played forward for Shonan Bellmare in J. League Division 1.

Career statistics

External links