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Night Blindness

What Are The Main Causes Of Blindness?

Eye Exams and Vision Care at Professional VisionCare

Eye Exams and Vision Care at Professional VisionCare

About 39 million people around the world currently live without sight.

Why so many? What causes it?

There are several reasons people become blind, which we will delve into below. Hopefully, by spreading awareness about the causes of blindness and ways to prevent it, Professional VisionCare in Lewis Center will help people like you preserve their vision for a lifetime. Call today to schedule your eye exam.

Top Causes of Blindness

1. Age-Related Macular Degeneration (AMD)

This eye disease is the leading cause of near-vision impairment in people over the age of 50. Patients living with AMD often lose part or all of their central vision, making it hard to perform daily tasks like driving, recognizing faces, and watching television.

2. Cataracts

A cataract occurs when the eye’s natural lens begins to cloud. While most people associate cataracts with advanced age, they can actually occur at any point in a person’s life, and for a variety of reasons. Risk factors for cataracts include genetics, age, radiation, trauma, and certain medications.

An estimated 17% of North Americans above the age of 40 have cataracts. Fortunately, they are easily removed through surgery. Left untreated, cataracts can eventually lead to blindness.

3. Glaucoma

Glaucoma is a group of eye diseases caused by increased ocular pressure. The two most common forms are open-angle glaucoma and closed- angle glaucoma. Open-angle is more common and typically progresses silently over a long period of time. Closed-angle glaucoma is a more painful and acute form of the disease. All forms of glaucoma can eventually lead to blindness.

Early detection and treatment are key in preventing vision loss from glaucoma.

4. Diabetic Retinopathy (DR)

DR is a complication of diabetes that occurs when excess sugar in the blood damages the retina’s blood vessels. There are 4 stages of DR, with the first stages rarely presenting noticeable symptoms. In many cases the condition can be managed and treated by your eye doctor, especially if caught early on.

Regular dilated eye exams are crucial for patients with diabetes, as it helps ensure the earliest possible detection of DR.

Frequently Asked Questions About Vision Care

Q: What does it mean to be ‘legally blind’?

  • A: People often assume those who are blind are unable to see anything. The truth is that to be considered legally blind, a person’s eyesight must be 20/200 — in other words, you’d need to stand 20 feet away from an object that one with healthy vision could see at a distance of 200 feet away. Furthermore, those who are legally blind cannot correct their vision with glasses or contact lenses.

Q: Can blindness be reversed?

  • A: Certain types of blindness are reversible. In cases of cataracts, corneal diseases, wet AMD and some instances of diabetic retinopathy, surgery, injections, and other treatments can return at least some sight to an individual who has experienced vision loss. On the other hand, diseases like glaucoma, retinitis pigmentosa, and dry age-related macular degeneration can cause irreversible vision loss.

Quality Frames For Prescription Glasses & Computer Glasses


As you may have noticed, the underlying theme in preventing all of these sight-threatening conditions is early detection. By undergoing yearly comprehensive eye exams, you stand a higher chance of keeping your eyes and vision healthy for the long term.

To schedule your annual comprehensive eye exam, call Professional VisionCare in Lewis Center today.

Refs
https://ibvi.org/blog/what-are-the-main-causes-of-blindness/

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 Lewis Center 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.

Prevention

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 Professional VisionCare in Lewis Center to schedule your appointment today.

Frequently Asked Questions with Dr. Amy R. Lay

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 Lewis Center, Ohio. Visit Professional VisionCare for an eye exam and eyeglasses that match your style.

The appointment scheduler is currently under maintenance, you can call or text us today to schedule your appointment at 614-898-9989