Shadow vision in one eye: Eye floaters – Symptoms and causes

Shadows or Dull Areas in the Vision Huntington Beach

What are Shadows or Dull Areas in the Vision?

Shadows or dull areas in your vision are small spots that drift around aimlessly in your field of vision casting slight shadows on your retina. The shadows that you experience are known as eye floaters. They are made up of the vitreous, a clear gel-like material that fills most of the eye. The floaters may appear to you as grey or black specks, strings, or cobwebs that drift about when your eye and the vitreous gel inside the eye moves.

Causes of Shadows or Dull Areas in the Vision

The most common cause of eye floaters is age-related changes and is normally found in individuals aged 50 and above.

As you age, the vitreous or jelly-like substance filling your eyeballs begins to liquefy, crowding the inside of the eyeball with deposits and debris. As the vitreous shrinks and sags, it begins to clump together. This debris obstructs some of the light traveling through the eye casting tiny shadows on your retina, causing eye floaters.

Floaters may also occur as a result of less common causes, such as:

  • Eye infection or inflammation
  • Eye trauma or injury
  • Diabetic retinopathy
  • Torn or detached retina
  • Bleeding in the eye
  • Eye medications and eye surgeries
  • Near-sightedness

Symptoms of Shadows or Dull Areas in the Vision

Some of the common symptoms of eye floaters include:

  • Shadowy specks or dots
  • Cobweb shapes
  • Rings
  • Small lines
  • Other irregular shapes

When Should You See a Doctor for Shadows or Dull Areas in the Vision?

You need to seek immediate medical attention from your doctor if you notice:

  • A sudden outbreak of new floaters
  • More than usual eye floaters
  • Blurred vision or loss of side vision
  • Appearance of flashes of light
  • Eye pain

Diagnosis of Shadows or Dull Areas in the Vision

In order to diagnose eye floaters, your doctor will carry out a thorough eye examination including dilation of the eyes to better visualize the posterior part of your eyes as well as the vitreous humor to establish the cause of the floaters.

Treatment for Shadows or Dull Areas in the Vision

Most eye floaters do not require any kind of treatment. If you experience temporary obstruction of vision due to floaters, just roll your eyes from side to side and up and down to move the obstructing debris. However, if the floaters are a result of an underlying condition such as inflammation, bleeding, or diabetes, then the condition needs to be treated accordingly.

In rare cases, eye floaters may also cause vision impairment. To treat this, your doctor may consider other treatment options, such as:

  • Surgical removal of the vitreous: During the surgery, your ophthalmologist will perform a vitrectomy, surgical removal of all or some of the vitreous humor from the eye, through a small incision and replace the vitreous with a solution to assist your eye to preserve its shape.
  • Use of laser to shatter the floaters: During this method, your ophthalmologist will employ a special laser to break up the floaters in the vitreous to make the floaters less noticeable.

Related Topics

  • Floaters & Flashes
  • Vision Disorders
  • Blind Spots
  • Blurred Vision
  • Distortion of Central Vision
  • Shadows or Dull Areas in the Vision
  • Burning Eyes
  • Itchy Eyes
  • Watery Eye
  • Eye Pain

What Is Carotid Artery Disease?

Carotid arteries are the main blood vessels in your neck that send blood to your eyes and brain. There are two carotid arteries in your neck: one on the right side and one on the left side. Carotid artery disease is when blood flow through your carotid artery is blocked. Without enough oxygen from blood, your eyes and brain do not work properly. You may notice that one side of your body is weak or numb, and you may lose vision on this side of your body.

What causes carotid artery disease?

A buildup of material in your arteries causes a plaque to form. This buildup eventually narrows or hardens the arteries. Pieces of plaque can break off into the blood stream, slowing or blocking blood flow to the eyes and brain.

Vision problems may be warning signs of carotid artery disease

Know the warning signs of a possible blocked carotid artery. If you have these symptoms, call your primary care doctor or ophthalmologist right away.

  • Vision that seems like a curtain is being drawn over your eye. This could be due to a temporary blockage in your carotid artery, called a TIA (transient ischemic attack, or “mini-stroke”). It may last a few minutes to an hour. This could be a warning sign that you may soon have a blocked carotid artery. Call your doctor right away.
  • Loss of side vision or total vision loss. This, along with muscle weakness or paralysis on one side of your body, may be a stroke. This can happen when the carotid artery is completely blocked. Do not wait—get help right away if you think you are having a stroke.

Who is at risk for carotid artery disease?

People at increased risk for carotid artery disease are those who:

  • smoke
  • have high cholesterol
  • drink a lot of alcohol
  • are obese
  • have high blood pressure
  • are not physically active enough
  • have a family history of carotid artery disease

Except for family history, you have some control over these risk factors. Talk with your doctor about ways to help reduce your risk of carotid artery disease. Your doctor may suggest that you eat a healthy diet, stay at a good weight, be active each day, and possibly take medicine.

Diagnosis of carotid artery disease

Your ophthalmologist or primary care doctor may want you to have certain tests if you are at risk for carotid artery disease.

Tests may include certain types of scans of the body. Those scans can show how well blood is flowing through your carotid arteries. Your ophthalmologist might dilate (widen) your pupils and examine the back of your eye to check for blocked blood vessels.

Treatment of carotid artery disease

Your doctors will work as a team to treat carotid artery disease. Your treatment may include:

  • blood-thinning medications (such as aspirin) to help prevent blood clots
  • medicine to lower your blood pressure
  • surgery to remove a blocked section of the carotid artery

Blurred vision in one or both eyes – [Dr. Kurenkov Clinic]

Blurred vision is when the vision loses its sharpness and instead of a clear picture, you see a blurry image. Objects seem to be out of focus and have blurred outlines.

It is quite logical that such a problem causes concern. There are many reasons for blurry vision. It can be myopia, farsightedness, astigmatism, presbyopia, all these vision problems are related to refractive errors. Sometimes the loss of image clarity can be evidence of dangerous diseases and neurological disorders that should not be ignored.

If you have problems with vision, then the first thing we do is go to the doctor, he will check your eyes in all respects and determine if treatment is needed. It is very important to check the eyes comprehensively.

Causes of blurred vision and how to cure it

Nearsightedness or myopia : In this case, you feel excessive tension in your eyes, up to a headache. There may be strabismus and blurred vision in one eye or both.

Treatment options include wearing glasses, contact lenses, surgical methods such as LASIK operations or photorefractive keratectomy.

Farsightedness : in this case, you can see objects in the distance perfectly, but not near. To see an object up close, you have to strain your eyesight. The eyes are very tired in this case. The treatments are similar to myopia – glasses, contact lenses or refractive eye surgery.

Astigmatism: If you have trouble seeing objects both near and far, this may be a sign of astigmatism. Its cause is the deformed shape of the cornea.

In this case, the light rays do not focus on the retina, which means that a clear picture does not add up, the distance to the object in this case does not matter.

Methods of treatment – glasses, lenses, surgery.

Presbyopia : This disease is a consequence of the body’s natural aging. And if your age is over forty, don’t be surprised that you find it hard to read text messages on your phone, the fine print on the packaging. As a treatment, your doctor may prescribe glasses to correct refractive errors and presbyopia. Additional options in glasses such as anti-reflective coating and photochromic lenses are very important. For more information about which glasses are best for you, contact your optometrist.

Chronic Dry Eye Syndrome : If your eyes are often dry, this can cause the picture to become blurry from time to time. As a treatment for this ailment, the doctor will recommend you artificial tears – these are drops that have a lubricating effect. If the situation is very serious, then the doctor will prescribe prescription drugs or special plugs inserted into the lacrimal canal – they have several names – obturators, occluders of the lacrimal openings.

Pregnancy: when a woman is expecting a baby, her body often produces surprising reactions, including vision problems – a fuzzy picture or double vision. Hormones are to blame for everything – they are able to influence the shape and thickness of the cornea. All this leads to blurred vision. Often blurred vision is a consequence of dry eyes, which also often happens during pregnancy.

Eye migraines or migraine headaches :

Migraine is an extremely unpleasant condition, but not dangerous in general. Among the symptoms, one can distinguish the appearance of a veil before the eyes, the flickering of light and luminous zigzags.

Floating flies : You may experience vision problems when some strange flies are swimming in front of your eyes. Very often, this problem appears with age: the gel-like vitreous body of the eye loses its dense structure over the years and becomes more liquid. Tiny bits of tissue inside it float freely around the eye and cast shadows on the retina, which is why we see floating objects.

Blurry vision after LASIK surgery : Vision may be blurry after refractive surgery. But this unpleasant effect passes after a few days. However, it will take a little longer for vision to return to normal.

Eye drops and medicines : eye drops, or rather the preservatives that are part of them, can cause a fuzzy picture, as well as eye irritation. Dry eyes and blurred vision may be due to the use of histamine preparations. These side effects are usually indicated in the instructions for medications. If you don’t know why you have blurry vision, you can ask your doctor this question, and he will find out if this is a “side effect” from any medications.

Unsupervised wearing of contact lenses : Normally you can wear lenses for a short period of time, this period is indicated on the lenses themselves, but very often we neglect these recommendations. If you wear contact lenses for too long, dirt, including protein, accumulates in them. This can not only cause blurred vision, but also an eye infection.

Blurred vision as a symptom of dangerous vision problems

Eye diseases: if you are over 60 years old and you feel that your vision is suddenly blurred, there is a risk that you have a macular hole – a retinal tear. Many eye diseases can result in irreversible loss of vision, so you should immediately go to the hospital if you feel that your vision has deteriorated sharply.

Cataract : This disease is dangerous because if left untreated, you can become completely blind. Cataract symptoms are blurred vision, glare and halos around the world at night, the solution is cataract surgery and an artificial lens. These surgeries will restore lost vision.

Glaucoma: symptoms – fuzzy picture and “tunnel vision”. It is very important to start treatment on time, because otherwise you can completely lose the ability to see.

Age-related macular degeneration : In the course of this disease, you suffer not so much from the fuzziness of the picture, but from the fact that the image becomes deformed – straight lines ripple or become broken. This age-related disease is again dangerous because you can completely go blind.

Diabetic retinopathy : Diabetes can lead to diabetic retinopathy, a dangerous disease that causes severe damage to the retina of the eye.

Cardiovascular and other systemic diseases: Blurred vision can be a sign of the onset of a very dangerous disease such as a stroke or cerebral hemorrhage. It may also be the first sign of multiple sclerosis. Therefore, if you suddenly feel that your vision has lost clarity or you have double vision, you should immediately seek medical help.


What is an amblyopic eye? | CooperVision Russia

Amblyopic eye is associated with strabismus. Amblyopia usually occurs when there is significant loss of vision in one eye and sometimes strabismus, a common problem of visual axis deviation.

Let’s look at how amblyopia and lazy eye affect your vision and how it can be treated and corrected.

Lazy eye/amblyopia: What is the difference?

There are two main conditions that lead to amblyopia:

Amblyopia is a problem associated with the development of the eye-brain connection: one eye is not involved in the visual process. The brain perceives information from only one eye. Amblyopia is not a vision problem, although it can be caused and created by these problems.

Strabismus is a deviation of the visual axis when the six muscles of the eye responsible for focusing cannot function together. This can be both a cause and an effect of amblyopia..

How does lazy eye affect my vision?

The most common symptoms of amblyopia are visual axis deviation and strabismus. However, amblyopia can cause serious vision problems:

  • Rapid loss of visual acuity if the disease is not corrected
  • Loss of binocular vision resulting in inability to perceive depth.
  • Increased risk of vision loss in the healthier eye because visual problems that usually affect the healthier eye first

What causes an amblyopic eye?

Amblyopia occurs due to poor interaction of visual functions with the brain or their insufficient development. When the eye muscles are unable to focus the eyes, especially during development, the brain receives different images from each eye. At the same time, the brain cannot combine these images into one volumetric one. As a result, the work of one eye is suppressed, and the corresponding part of the brain does not develop.

Another common cause is inadequate refraction of the eye (nearsightedness, farsightedness, or astigmatism), which is greater in one eye. This also results in the inability to match the two images of both eyes into a single unit.

Anything that creates this kind of visual imbalance can lead to amblyopia. This includes cataracts in children, cloudy lenses, anatomical and other structural abnormalities

Treatment of amblyopia

The sooner amblyopia is diagnosed, the better the chances of recovery. However, the treatment of amblyopia in adults is also effective, especially if the recommendations of the ophthalmologist are followed. Studies have shown a significant improvement in visual acuity in the lower visual eye in older patients, albeit with poor performance and recovery rates.

There are two main steps in the treatment of amblyopia:

Step 1: Correction of visual problems

Disorders such as cataracts and inadequate refraction of the eye must be corrected first. Often this is simply the prescription of glasses for nearsightedness and farsightedness. Sometimes, in some cases, correcting the vision of the eye with a lower level of vision is quite enough to eliminate amblyopia.

Stage 2: Amblyopic eye training

In most cases, the optometrist blocks the eye with a higher level of vision in order to force the brain to perceive the image from the amblyopic eye. This can be achieved with a patch or eye drops that temporarily cause blurry vision.