Reasons For Blindness
Blindness is the inability to see things including light.
Reasons for blindness. Nearly all cases of blindness in the united states are caused by eye diseases with less than 4 percent of blindness caused by eye injury or trauma. In many cases prompt diagnosis and treatment can prevent permanent blindness. Vision loss is different from blindness that was present at birth and this article is concerned with causes of vision loss in an individual who previously had normal vision.
It is a rare issue that is caused by a lack of blood flow to the eye and it can last anywhere from several seconds to several minutes. Sudden blindness total or near total vision loss in one or both eyes is a medical emergency. 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.
Blindness is known as the state of being sightless in both of the eyes. Visual impairment is often defined as a best corrected visual acuity of worse than either 20 40 or. For example poor eyesight may contribute to a car crash or to a fall.
However the term blindness is commonly used to signify low vision or visual impairment in one or both eyes this means that even with contact lenses eyeglasses medicine or even surgery an individual does not see well. Learn about causes diagnosis treatment and more. Whatever the reason for vision loss any vision change can compromise an older person s quality of life and indirectly health.
Leading causes of blindness. Some also include those who have a decreased ability to see because they do not have access to glasses or contact lenses. Blindness is preventable through a combination of education and access to good medical care.
It can be partial or complete. Nutritional causes of blindness are preventable through proper diet. Most cases of blindness from glaucoma are preventable through early detection and appropriate treatment.
Episodic blindness could be a sign of a more serious condition such as a stroke. Learn more about what. A totally blind person is not able to see anything even light.
Loss of vision can be especially devastating to older people coping with other problems as well. Vision loss can also be considered as loss of sight that cannot be corrected to a normal level with eyeglasses. With 47 9 percent of all causes of blindness cataract tops the chart in all parts of the world except for the developed countries.
Cataract is mostly age related and is common in old age group. Most traumatic causes of blindness can be prevented through eye protection.
