[n] körlük

Türkçe - İngilizce

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blindness

concealment

Want of intellectual or moral discernment; mental darkness; ignorance, heedlessness

{n} a want of sight or sense, ignorance

is acknowledged where documented evidence confirms that the patient has been registered blind (not partially sighted) thus having severely deteriorated vision in both eyes Blindness was considered due to diabetes if it was explicitly documented as such in the records or if blindness occurred following a history of severe diabetic eye disease

Inability to see with one or both eyes. Transient blindness (blackout) can result from vertical acceleration causing high gravitational forces, glomerulonephritis (a kidney disease), or a clot in a blood vessel of the eye. Continuing blindness may arise from injuries or diseases of the eye (e.g., cataract, glaucoma), including the retina, the optic nerve, or the brain's visual centres. Many infectious, noninfectious, and parasitic systemic diseases can cause blindness. Sexually transmitted diseases and rubella in pregnant women can cause blindness in their infants. See also macular degeneration; visual-field defect

Permanent loss of sight in both eyes, as confirmed by an ophthalmologist registered to practice in Canada The corrected visual acuity must be worse than 20/200 in both eyes, or the field of vision must be less than 20 degrees in both eyes This definition is similar to the presumptive clauses in disability policies The event can be the result of an accident, injury or illness The benefit will be paid regardless of whether the cause is injury, disease, or degeneration of the eyeball, of the optic nerve or nerve pathways connecting the eye to the brain, or the brain itself

There are over 50 definitions of blindness worldwide The World Health Organisation definition of blindness is less than 3/60 in the better seeing eye This means that the better seeing eye cannot read the top letter on the Snellen visual acuity chart at three metres

A person may be legally blind with either 20/200 vision in both eyes with best correction, OR a field of vision restricted to 200 or less

As evidenced by permanent loss of sight in both eyes with corrected visual acuity of less than 20/200 or a field of vision in both eyes less than 20 degreesÂof less than 20/200 or a field of vision in both eyes less than 20 degrees

A lack or loss of vision due to damage to the organs of vision or to the vision centers of the brain A person is considered legally blind if they have corrected visual acuity of 20/200 (they can at best see at 20 feet what ordinarily can be seen at 200 feet) or less in the better eye, or a visual field of no more than 20 degrees in the better eye

visual impairment The historic name for many forms of visual impairment, it is now regarded as unhelpful because it suggests there is one condition rather than a spectrum of possible visual impairments

transient or permanent inability to see with one or both eyes

Inability to see Legal blindness is corrected visual acuity of 20/200 or less, or corrected visual field to 20 degrees or less, in the better seeing eye See Low Vision in Eye Care Encyclopedia See General Eye Care in Free Eye Tests

State or condition of being blind, literally or figuratively

if one eye or both eyes are reported totally blind and have no vision

A condition in which a person has lost the use of vision for ordinary life purposes, although some residual vision may exist Legal blindness is defined as visual acuity (sharpness of vision) of 20/200 or worse in the better eye, after correction, or when the field of vision is less than 20 degrees in the better eye, after correction

Someone in America goes blind every seven minutes Currently, 80 million Americans have eye disorders which potentially can lead to blindness Over six million Americans are going blind from retinal degenerative diseases By 2030 the number is expected to reach more than 10 million

{i} state of being unable to see; ignorance, unenlightened state

lack of sight

The condition of being blind; unable to see

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[n] kör·lük