Astigmatism: Causes, Symptoms & Treatment | Bausch + Lomb

Astigmatism

Astigmatism is a common vision condition that happens when a person's cornea is not symmetrical. A normal cornea is round like a baseball. With astigmatism, the cornea curves more severely, like a rugby ball.

What Causes Astigmatism?

Astigmatism can come in combination with shortsightedness and longsightedness. Because of its asymmetrical curvature, the astigmatic eye focuses light correctly along one axis, but incorrectly along the other. Light entering the eye is not focused on a single point on the retina, so objects both near and far become blurred or distorted producing an effect similar to looking through a pane of wavy glass.

Symptoms of Astigmatism

An eye care professional may diagnose astigmatism through a variety of tests, including a simple vision test, light refraction test, cornea measurement, or electronically mapping the surface of the eye. Common symptoms of astigmatism include:

  • Objects both near and far appear blurred
  • Inability to read small print
  • Constant squinting of the eyes

Treatments for Astigmatism

Since astigmatism occurs from the uneven distribution of light rays, it's corrected when light rays are focused on a single plane. This is done in a number of ways:

  • Spectacles
  • Contact Lenses : PureVision 2 HD for Astigmatism and Soflens Toric for Astigmatism lenses are designed to meet the special vision correction needs of people with astigmatism

Related Articles

Babies Eye Concerns

While chances are excellent that your baby's vision will develop normally, some infants have a higher risk for certain conditions that may affect their sight...

Know More

Toddlers and Childrens Vision Concerns

Parents are usually the first to notice that their children may have special vision needs, so if you have any concerns about your child’s vision, don’t hesit...

Know More

Keeping your Eyes Healthy

It is important that your eyes stay healthy because you’ll need good vision for just about every activity you choose—and you want to keep your 20/20 vision f...

Know More

Eye Concerns

Generally, changes in your vision now are just a factor of aging. If you experience any of the issues below, you may have the early warning signs of a m...

Know More

60s+ Eye Concerns

Many eye diseases have no early symptoms. They may be painless, and you may see no change in your vision until the disease has become quite advanced. Only yo...

Know More

Shortsightedness (Myopia)

A person with shortsightedness can see close objects clearly, but may have trouble seeing objects from a distance – like a road sign, blackboard, or face acr...

Know More

Longsightedness (Hyperopia)

Contrary to what the name implies, a person who is longsighted has blurred vision when looking at close objects, unless they make a constant effort to focus,...

Know More

Presbyopia

Presbyopia is a natural occurrence where near vision becomes blurred, making it hard to focus while doing things like reading, using a mobile phone, or worki...

Know More

Age-Related Macular Degeneration

If you’ve been diagnosed with Age-related Macular Degeneration (commonly abbreviated as AMD), you’re not alone. It is estimated that as many as 16 million pe...

Know More

Bulging Eyes

Bulging eyes, or proptosis, occurs when one or both eyes protrude from the eye sockets due to space taking lesions such as swelling of the muscles, fat, and ...

Know More

Cataracts

The eye's natural crystalline lens helps us focus on people and things at varying distances. Unfortunately, as we grow older this lens often stiffens and har...

Know More

Cataracts in Babies

What is a cataract?

Normally, babies are born with a transparent lens in each eye. The lens focuses objects on the retina, and it brings objects in...

Know More

Diabetic Macular Edema

Diabetic macular edema (DME) is a complication of diabetes caused by fluid accumulation in the macula, or central portion of the eye, that causes the macula ...

Know More

CMV Retinitis

CMV retinitis is an infection that attacks the light-sensing cells in the retina. It is a serious disease that should be diagnosed and treated immediately, b...

Know More

Color Blindness

Nearly all people who are “color blind” can see colors but have difficulty distinguishing between certain colors. Not all people who are color blind have tro...

Know More

Crossed Eyes (Strabismus)

Crossed eyes (or strabismus) occur when a person’s eyes are not able to align on the same point at the same time, and appear to be misaligned or pointed in d...

Know More

Herpetic Keratitis (Eye Ulcers)

You've probably heard that the herpes simplex virus (HSV) can cause open sores on the face and genitals but did you know the infection can be transferred to ...

Know More

Keratoconus

Keratoconus is a condition that results from an irregularly shaped cornea, which prevents light from focusing correctly on the retina. In keratoconus, the no...

Know More

Eye Floaters and Eye Flashes

Eye floaters are tiny spots, specks, lines or shapes that enter into your field of vision, appearing to float in front of the eye. They may seem like distant...

Know More

Glaucoma

Glaucoma occurs when a build-up of fluid creates pressure in the eye, which then damages the optic nerve. The optic nerve is responsible for the transmission...

Know More

Lazy Eye (Amblyopia)

Amblyopia, commonly known as lazy eye, occurs when there is a lack of vision in one eye because the eye and the brain are not working together. The brain may...

Know More

Ocular Hypertension

Ocular hypertension occurs when the pressure in the eye (known as intraocular pressure) is above the range considered normal (often defined as above 21 mm Hg...

Know More

Retinal Detachment

Retinal detachment occurs when the retina becomes separated from the nerve tissues and blood supply underneath it. While painless, visually this has a cloudi...

Know More

Eyelid Twitching

Sometimes your eyelid simply twitches. It is rarely uncomfortable and does not affect your vision-- but it can be irritating. Most of all, it may make you wo...

Know More

Low Vision

Low vision is a term that refers to vision 20/70 or worse that cannot be fully corrected by glasses or contact lenses. People with low vision generally fall ...

Know More

Uveitis

Uveitis is an inflammation of the uvea (or uveal layer) – the middle layer of three that make up the eye. It may be infectious or noninfectious. It is a trea...

Know More

Don’t Believe These 5 Myths About Glaucoma

You will find that every year, multiple national and international eye institutes, health organizations, opticians, universities, and NGOs combine efforts to...

Know More

Common Eye Disorder Explained - The Usuals vs. The Red Flags

Our eyes are highly complex and sensitive organs. If you want your eyes to be healthy and enjoy a colorful and vibrant life, you need to take good care of th...

Know More
Get Your Free Trial Today