Would you like to switch to the accessible version of this site?

Go to accessible site Close modal window

Don't need the accessible version of this site?

Hide the accessibility button Close modal window
Accessibility View Close toolbar
VH

Our Location

(707) 206-0290

Open mobile navigation
  • Home
  • New Patient Center
    • Online Forms
    • Insurance and Payments
  • About Us
    • Meet the Optometrist
  • Eyecare Services
    • Contact Lens Exams
    • Eye and Vision Exams
    • Lasik Eye Surgery
    • Hard to Fit Contacts
    • Computer Vision Treatment
    • Sports Vision
    • Sunglasses
  • Frames
    • Designer Frames
  • Testimonials
  • Contact Us
    • Appointment Request
  • Community Content
  • Home >
  • Articles >
  • Newsletters >
  • Causes of Low Vision

Causes of Low Vision

  • Created in Newsletters

Woman struggling with vision

Eye Conditions That Cause Low Vision

Low vision causes permanent changes to your eyesight that can make life a little more challenging. You may have low vision if you can't see well, even when wearing prescription eyeglasses. If the best you can see with your glasses is 20/70 to 20/160, you have moderate low vision, according to a low vision classification used by the World Health Organization. Other categories of low vision include:

  • 20/200 or Higher: Severe low vision
  • 20/500 to 20/1000: Profound low vision
  • Less than 20/1000: Near-total low vision

These eye diseases and conditions can affect your eyesight, causing low vision.

Diabetic Retinopathy

Keeping your glucose (blood sugar) level under control is essential if you have diabetes. When your blood sugar is consistently too high, you may be more likely to develop heart disease, nerve damage, high blood pressure, kidney damage, or vision loss.

Diabetic retinopathy occurs when abnormal blood vessels grow in your retina. The retina lines the back of your eye and sends electrical impulses to the brain, which then converts them to images. Abnormal blood vessels leak blood or fluid, interfering with vision. Damage to the retina can also occur in some cases.

Glaucoma

Increased pressure inside the eye can damage your optic nerve, the pathway between the eye and the brain, if you have glaucoma. If the optic nerve is damaged, some or all of the electrical impulses sent by the retina won't reach the brain depending on the extent of the damage. As a result, you may develop blind spots or even lose your vision completely.

Pressure changes can happen gradually or suddenly. Gradual changes usually don't cause any symptoms until your vision is permanently damaged.

Fortunately, visiting your optometrist for yearly eye exams can help you avoid vision loss caused by glaucoma. During your exam, your eye doctor will test the pressure inside your eyes and dilate your eyes to view your optic nerve.

Torn or Detached Retina

If your retina tears or separates from the back of the eye, you may notice blind spots in your vision or feel as if a dark curtain has fallen over your eye. Unfortunately, if you don't receive prompt treatment for a tear or detachment, you may experience some degree of permanent vision loss.

Eye injuries and aging are the most common causes of retinal detachments, according to the National Eye Institute. Other causes include eye injuries, certain eye disorders, or previous surgery on the eye.

Macular Degeneration

Macular degeneration, a common age-related eye disorder, affects the central part of your vision. Cells in the macula, the center part of your retina, begin to degenerate, creating blurry or blind spots. These spots make it hard to read, drive, or recognize faces.

If you're diagnosed with macular degeneration, your eye doctor will tell you whether you have the wet or dry form. The dry type occurs when the macula thins and yellow deposits called drusen form under the retina. The wet form happens when abnormal blood vessels grow in the macula and leak. Injected medication or laser therapy may be helpful if you have the wet form of the disorder. Unfortunately, there is no treatment for the dry form yet.

Cataracts

A cataract happens when the normally clear lens inside your eye becomes cloudy. The lens focuses light on your retina and plays an important part in the visual process. When the lens becomes cloudy, you may notice that colors are duller and everything looks a little blurry. Glare and halos around lights may also be a problem.

Most people notice an improvement in their vision after cataract surgery. The surgery involves removing the clouded lens and replacing it with an artificial lens implant. If you have cataracts and also have other eye diseases, like macular degeneration or diabetic retinopathy, you may still have some trouble seeing after your surgery.

Retinitis Pigmentosa

Cells in the outer part of the retina begin to degenerate in retinitis pigmentosa (RP). As time goes on, your side vision slowly shrinks, leaving you with only a small amount of central vision. RP also makes it hard to see at night or in low light. The condition is inherited and often causes legal blindness by age 40, according to the Foundation Fighting Blindness.

Are you struggling to live with low vision? Low vision aids can help you make the most of your remaining vision. Your optometrist can help you find the most effective visual aids for your condition. Contact our office to schedule a visit with the eye doctor.

Sources:

National Eye Institute: Retinal Detachment

Foundation Fighting Blindness: What Is Retinitis Pigmentosa?

American Optometric Association: Low Vision and Vision Rehabilitation

American Academy of Ophthalmology: Causes of Low Vision, 6/14/21

National Eye Institute: Low Vision

  • Common Eye Conditions
    • Age-Related
    • Cognitive and Acquired
    • Vision Impairment
    • Injury & Irritation
    • Eye Lids
    • Changes in Appearance
  • Contact Lenses
  • Eye Diseases
  • Eyeglasses
    • Eyeglass Lenses
  • Eye Symptoms
  • How the Eyes Work
    • Basic Visual Skills
  • Pediatric Vision
  • Protecting Your Eyes
  • Visual Rehabilitation
  • Vision Problems
  • What is Vision Therapy
  • Vision Therapy Programs
  • We Can Help With
    • Cataracts
    • Corneal Disorders
      • Disorders
    • Glaucoma
    • Refractive Disorders
    • Adult Strabismus
    • Retinal Disorders
  • Newsletters
    • Glasses & Frames
    • Contacts
    • Tips for Healthy Eyes
    • Conditions That Affect Vision
    • Kid's Vision
    • Amazing, Interesting Eyes
    • Medical Perspectives

Contact Us

We look forward to hearing from you.

Hours of Operation

Our Regular Schedule

Rohnert Park Office

Monday:

11:00 am-4:00 pm

Tuesday:

10:00 am-7:00 pm

Wednesday:

9:00 am-7:00 pm

Thursday:

9:00 am-5:00 pm

Friday:

9:00 am-5:00 pm

Saturday:

Closed

Sunday:

Closed

Locations

Find us on the map

    No testimonials found. Please add

Featured Articles

  • April Newsletter: Tired of Contacts? Consider Orthokeratology.

    Wish you didn't have to wear your daily or monthly contact lenses? Orthokeratology can sharpen your vision. ...

    Read More
  • April Newsletter: Corneal Abrasion Could Lead to Infection. See Your Eye Doctor!

    Has something scratched your eye? A visit to the eye doctor could help you avoid a serious infection. ...

    Read More
  • March Newsletter: Are Your Eyes Getting Enough Vitamin D?

    Not getting enough of a key vitamin might increase your risk of several eye diseases. ...

    Read More
  • March Newsletter: Is Your Prescription Up to Date? What You Need to Know about When and Why You should See Your Optometrist

    Not sure when you need to see the eye doctor? ...

    Read More
  • Saccadic Fixators

    This entails a wall-mounted square board with a starburst design. Along the various striations of the starburst are lighted buttons. As the buttons light up, the patient works quickly to see how many of these lit buttons they can push before they go out. The key is to keep the head still. Peripheral ...

    Read More
  • Patches

    Eye patches are used to strengthen muscle control in weak eyes. By placing a patch over the strong eye, the weaker eye is forced to do the heavy lifting. While it may be uncomfortable for the patient at first, the muscle controlling the weaker eye will become tougher and more resilient. This will allow ...

    Read More
  • Rotation Trainers

    Rotation trainers consist of a disk – with various designs – that is attached to a rod-like base. As the disk rotates, the patient is asked to perform tasks that are designed to test and enhance eye-hand coordination, space awareness, perceptual awareness and visual acuity. ...

    Read More
  • Computer Software

    Computer aided vision therapy consists of a software package designed to enhance eye tracking skills, visual thinking, processing skills and binocular vision skills. Eye teaming, focusing and tracking are not optical in nature, and problems in these areas are the result of poor eye muscles. Specialized ...

    Read More
  • Prisms

    A prism has the same cross-section across the entire length of its shape. When used in eyeglasses, they often correct abnormalities associated with nearsightedness, farsightedness and double vision. Eyeglasses, or corrective lenses, reduce or increase the size of the image based on the eyes’ ability ...

    Read More
  • February Newsletter: Age-Related Macular Degeneration (AMD) Awareness Month

    Do you know how age-related macular degeneration could affect your vision? ...

    Read More

Newsletter Signup

Sign up for more articles!

  • Copyright © 2023 MH Sub I, LLC dba iMatrix
  • Admin Log In
  • Site Map