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Bordering Cedar Park & North Austin, minutes from Lakeline Mall. NW Corner of El Salido Pkwy & 620, behind AutoZone.
Bordering Cedar Park & North Austin, minutes from Lakeline Mall. NW Corner of El Salido Pkwy & 620, behind AutoZone.
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Night Blindness

What Is Night Blindness?

Night blindness, also known as nyctalopia, affects vision clarity in low-light conditions. Despite its name, night blindness does not only affect your vision at night, but also the ability to see in dimly lit areas, such as a movie theater or restaurant any time of the day.

Night blindness isn’t a stand-alone condition. It’s a symptom of several conditions, including eye diseases, severe myopia, and a vitamin A deficiency.

If you are finding it difficult to drive at night, or are having trouble navigating, or recognizing faces and objects in dimly lit conditions, you may be suffering from night blindness.

How Does Night Vision Work?

In order to be able to see well at night, or in low-light conditions, your eyes need to adjust. When your eyes are exposed to a dimly lit or dark environment, your pupils will become larger, to enable more light to enter your eye. This light will then move through a series of steps in order to be received by the retina. The retina is the light-sensitive tissue in the back of your eye that contains all of the photoreceptor cells, called cones and rods.

Decreased night vision or total night blindness can occur when the rods stop working. This is usually a result of an eye injury, disease, or condition. In some cases, poor night vision can be part of the natural aging process.

How is Night Blindness Diagnosed?

The only way to diagnose night blindness is through a comprehensive eye exam. Your eye doctor will ask you questions about your medical history and conduct a series of tests to identify signs of a vision condition or an ocular disease.

Do I Have Night Blindness?

Night blindness can be caused by a number of underlying conditions. While symptoms may vary, the most common signs of night blindness include:

  • Cloudy or blurry vision in low light
  • Difficulty seeing distant objects in low light
  • Inability to see stars in the night sky
  • Sensitivity to light
  • Seeing halos or a glare around lights
  • Total loss of vision when entering a dark room that lasts more than a minute or two.

If you are experiencing any of these symptoms, contact Lakeline Vision Source. We can diagnose the underlying problem and treat or manage the condition affecting your vision.

At Lakeline Vision Source, we put your family’s needs first. Talk to us about how we can help you maintain healthy vision. Call us today: 512-918-3937 or book an appointment online to see one of our Cedar Park eye doctors.

Want to Learn More? Read on!

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What You Should Know About Night Blindness

If you don’t see well while driving at night, there’s a chance you have night blindness. Night blindness, or nyctalopia, is the inability to see well at night or in dim lighting. It’s not considered an eye disease, but rather a symptom of an underlying problem.

Our eye doctor in Cedar Park can help diagnose, manage and treat your night blindness with specialized digital eye exams, so that you can enjoy being out and about at night again.

Here are 4 things you should know about night blindness:

Causes of Night Blindness

The inability to see well at night can be the result of a condition such as:

  • Vitamin A Deficiency — Vitamin A helps keep your cornea, the layer at the front of your eye, clear; it’s also an important component of rhodopsin, a protein that enables you to see in low light conditions. Although uncommon in North America, deficiency of this vitamin can induce night blindness.
  • CataractsA buildup of protein clouds the eye’s lens, leading to impaired vision, especially at night and in poor lighting conditions.
  • Diabetic RetinopathyDamage to the eyes’ blood vessels and nerves can result in vision loss, including difficulty seeing at night.
  • GlaucomaThis group of eye diseases is associated with pressure build-up in the eye that damages the optic nerve. Both glaucoma and the medications used to treat it can cause night blindness.
  • MyopiaAlso called nearsightedness, myopia makes distant objects appear blurry, and patients with it describe a starburst effect around lights at night.
  • KeratoconusAn irregularly shaped cornea causes blurred vision and may involve sensitivity to light and glare which tend to be worse at night.
  • Retinitis Pigmentosa (RP)A progressive genetic eye disease which can be associated with other diseases, RP leads to night blindness and peripheral vision loss.
  • Usher SyndromeThis genetic condition causes both hearing loss and vision loss, including night blindness and RP, mentioned above.

Symptoms of Nyctalopia

Since night blindness is a symptom of some serious vision problems, it’s important to get your eyes checked regularly to ensure that everything is in good working order. Contact your eye doctor as soon as possible if you notice that you don’t see as well in dim light as you used to, such as when driving at night or when adjusting from being outdoors in the sunshine to being indoors.

Symptoms of Night Blindness Include:

  • Reduced contrast sensitivity
  • Difficulty seeing people outdoors at night
  • Difficulty seeing in places with dim lighting, like a movie theater
  • Trouble adapting to the dark while driving
  • Excessive squinting at night
  • Trouble adjusting from bright areas to darker ones

Treatments for Night Blindness

Your eye doctor will want to diagnose the cause of your night blindness in order to treat it. For example, in the rare case of vitamin A deficiency, it can be treated with vitamin supplements and vitamin-A rich foods; myopia can be corrected with eyeglasses or contact lenses. Other conditions may require medications or surgery.

If night blindness is caused by a birth defect, Usher syndrome, or retinitis pigmentosa, low vision aids and devices can help you make the most of your remaining vision.


While there is no proven way to prevent night blindness resulting from genetic conditions or birth defects, consuming healthy, nourishing foods and taking certain vitamin supplements may prevent or slow the onset of some eye conditions that cause night blindness.

If you experience poor vision at night or in dim lighting, we can help. Contact Lakeline Vision Source in Cedar Park to schedule your appointment today.

Frequently Asked Questions with Dr. Eric Hammond OD

Q: Can you request lenses made from glass? Is glass still used for lenses?

  • A: Yes. Opticians still sometimes use glass for lenses. However, glass is not used very often because they aren’t as safe. If these glass lenses breaks, they can shatters into many pieces and can injure the eye. Glass lenses are much heavier than plastic lenses, so they can make your eyeglasses less comfortable to wear.

Q: Can a coating be added to eyeglasses to protect them from further scratches?

  • A: A protective coating can’t be added to a lens after it’s scratched. The coating is applied when the lens is manufactured and can’t be put on later.

Quality Frames For Prescription Eyeglasses & Computer Glasses In Cedar Park, Texas. Visit Lakeline Vision Source for an eye exam and eyeglasses that match your style.

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