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night blindness

العشي-الليلي

What is night blindness disease?

Night blindness is a type of visual impairment also known as nyctalopia. People with night blindness have poor vision at night or in dimly lit environments.

Although the term “night blindness” means that you cannot see it at night, this is not the case. You may have more difficulty seeing or driving in the dark.

Some types of night blindness can be treated while others are not. See your doctor determine the underlying cause of your vision impairment. Once you know the cause of the problem, you can take steps to correct your vision

Infection with this disease affects the field of vision, and the affected person needs to check a lot to see things around him.

How do we find out who is afflicted with it

To determine night blindness, the American Academy of Ophthalmology suggests that people consider the following questions:

  • Is moving around the house in dim light difficult?
  • Is driving at night increasingly difficult?
  • Is it difficult to recognize faces in low light?
  • How long does it take to adapt to a lighting room and is it longer than normal?
  • Is it taking too long to see in a dark room after being in the light?

Symptoms of night blindness

Night blindness has several different symptoms for the person:

  • Poor vision at night: The person’s inability to see clearly in the dark, and stumbling in things while moving due to lack of vision, especially in low light.
  • Blurred vision: this is an indication of a problem in the eye, it could be night blindness or other diseases.
  • Keratitis: As a patient with a night blind night, the cornea can become dehydrated and irritation of the cornea more than others.
  • Retinitis pigmentosa: gray spots can be seen in the white of the eye.
  • It took a long time to adjust the eyesight to change the lighting.

What are the causes of night blindness

Some eye diseases and complaints can cause night blindness, including:

  • Nearsightedness, or blurred vision when looking at distant objects
  • Cataracts or so-called clouding of the lens
  • Retinitis pigmentosa, which occurs when the dark pigment collects in your retina and creates what is called a tunnel vision.
  • night blindness
  • The so-called tunnel vision
  • Usher syndrome, a genetic condition that affects both hearing and sight

The elderly have a greater risk of developing cataracts. Thus, children or young adults are more likely to have night blindness due to cataracts.

In rare cases in the United States or in other parts of the world where diets may differ, a lack of Vitamin A can also lead to night blindness.

  • Vitamin A, also called retinol, plays a role in converting nerve impulses into images in the retina. The retina is a light-sensitive area in the back of your eyes.
  • People with pancreatic insufficiencies, such as individuals with cystic fibrosis, find it difficult to absorb fat and are at greater risk of developing vitamin A deficiency because vitamin A is fat-soluble. This puts them at greater risk of developing night blindness.
  • People with high blood glucose or diabetes also have a higher risk of developing eye diseases, such as cataracts.

How to treat night blindness

You should know the real reason for this, and this is what the ophthalmologist will do after examining your eyes to diagnose night blindness. You may also need to give a blood sample. A blood test can measure vitamin A and glucose levels.

The promising thing is that night blindness caused by nearsightedness, cataracts or vitamin A deficiency can be treated. Using corrective lenses, such as glasses or contacts, can improve short-term vision during the day and at night.

Tell your doctor if you still have a vision problem in dim light even with corrective lenses.

  • Cataract

Cloudy parts of your eye lens are known as cataracts. It can be removed through surgery. Your surgeon will replace the cloudy lens with a clear artificial lens. Night blindness will improve dramatically after surgery if this is the underlying cause.

  • Vitamin A deficiency

It is a very important vitamin for vision and vision. If vitamin A levels are low, your doctor may recommend vitamin supplements. Take supplements as directed.

Most people do not have a vitamin A deficiency because they get proper nutrition.

  • Genetic conditions

Genetic conditions that cause night blindness, such as retinitis pigmentosa, cannot be treated. The gene that causes pigment accumulation in the retina does not respond to corrective lenses or surgery.

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