Home Diseases and Disorders What Are The Causes For Blindness?

What Are The Causes For Blindness?

Eyesight is important. This helps us in seeing the things around us. It is important that this sense of human remains as it is. Any damage to it and a human will face difficulty. Still, there are many people who lose eyesight every year.

blindnessThe blindness can be the result of physiological or neurological factors. There are various ranges to determine the blindness.  Blindness, technically, is defined to refer the complete loss of vision, also known as ‘no light perception.’ The factors which cause blindness are listed below.

Cataracts:

It is formed on the lens of the eye. It is common between the elderly generations. It happens as the lens started to get the cloudy deposition. This may cause blurred and hazy image. The person might feel as if he/she is looking through a fog. This normally affects the most Americans every year. It can be easily treated with surgery. The following could be the symptoms:

1)  Color faded image
2)  Blurred vision
3)  Double vision
4)  Glare
5)  Can’t see at night
6)  Very frequent prescription change of the eyewear

Macular Degeneration:

This is common among the Americans over 60. This happens due to the gradual decline of the macula or the nerve that is responsible for the sharp image vision. Also known as the age-related macular degeneration (AMD), this affects the ability to drive, read, watch television and other daily routine tasks.

In some cases, it approaches slowly without letting the person know about the vision change. Whereas, in some cases, it is fast and affect the vision of both the eyes. These are of two types: dry and wet. In dry, the light sensitive cell in the macula breaks down resulting in the blurring central image. Whereas in wet, the abnormal blood vessel grows under the macula.

Unfortunately, there is no treatment for this problem will date. Although, regular checkup may help one with the diagnosis.

Glaucoma:

It is one of the leading causes of blindness. It attacks the eye optic nerve and damages it. This happens as fluid inside the eye rises slowly and damages the optic nerve. There are no symptoms as such and it can be detected by the regular eye tests.

Due to the no symptoms, it is estimated that many Americans suffer from it but are not aware. It is quite common in African Americas. Also, between the ages of 45 to 64, this problem has higher chances of affecting African Americans as compared to white.

The doctor may prescribe few eye drops or/and surgery but there is no such cure available for this problem.

Diabetic Retinopathy:

As the name says this problem in found in people who suffer from diabetes. It affects the light sensitive tissue at the back of the eye, known as the retina. This is also one of the leading causes of blindness in U.S. adults.  The full eye checkup is suggested for those who have diabetes to diagnose it.

This could be treated by the surgery or laser treatment. Although with timely control of the diabetic and diet, this situation can be prevented.

It is important that one takes care of the eye, properly. Above are the only few commonly known problems which cause blindness. It is necessary to go for the regular checkup of the eye at least once a year in order to prevent the worse situation.