How to know you have night blindness?

How to know you have night blindness?

Night blindness is vision impairment which is also referred to as nyctalopia. Individuals with night blindness have poor vision at night. Additionally, it can be more difficult for you to drive or see in darkness. In this guide, we have focused on the points to make you understand if you have night blindness or not.

What is night blindness?

Night blindness (Nyctalopia) in which the eye is not able to adapt to the low-light conditions, specifically at nighttime. Well, itself is not a condition but this can occur due to existing eye problems.

With this condition, the person is not able to see in dim light but it does not cause complete blindness. Example: The person is not able to see road signs at night. The eye needs time to adapt properly when it is changed from light to dark settings.

What are the symptoms of night blindness?

Night blindness can occur due to eye disease which affects the vision in dim lighting. Example: With this condition, the person is not able to see the stars or obstacles in a dark room. To identify night blindness, your eye specialist will ask you the following questions:

  • Are you having difficulty moving around the house in dim light?
  • Is it very difficult to drive at night?
  • Are you not able to recognize faces in dim light?
  • Do you face problems adjusting to the lightroom from a dark room?
  • Do you need more light to perform daily tasks?
  • Do you need more time to see in a dark room after being in the light?

There are additional symptoms which come along with night blindness and nature will depend on the underlying cause which includes:

  • Headaches
  • Eye pain
  • Nausea
  • Light sensitivity
  • Vomiting
  • Blurry, or cloudy vision
  • Difficulty seeing the distanced object

If you have any of these symptoms then you should seek medical help from our eye doctor for the best treatment program.

Potential Causes

Night blindness can occur due to one of these conditions, many of them are treatable. Some of the conditions include:


A glaucoma is a group of eye problems that damage the optic nerve that connects to the brain and causes pressure in the eye. This condition can lead to permanent vision impairment.


Cataracts occur when the lens gets cloudy. It happens when the proteins in the lens break down due to aging. Due to this, vision can get affected in the dim light.


Nearsightedness is also known as myopia. In this condition, the person is not able to see the objects from the distance. The problem occurs when the eye grows too long and it is not able to focus on light correctly.

Deficiency of Vitamin A

Vitamin A is an important nutrient for vision. It helps in making a protein that absorbs light in the retina and it supports eye functioning. If a person is suffering from Vitamin A deficiency, then it can impact the vision.