Tag: cataracts

Cataracts are a clouding of the eye’s lens that prevents a clear image from forming on the retina, blurring vision. Most are related to aging. They are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.

A cataract can occur in either or both eyes. It cannot spread from one eye to the other. Although most cataracts are related to aging, there are other types:

• Secondary cataracts can form after surgery for other eye problems, such as glaucoma. They also can develop in people who have other health problems, such as diabetes. Cataracts are sometimes linked to steroid use.

• Traumatic cataracts can develop after an eye injury, sometimes years later.

• Congenital cataracts sometimes appear in newborn babies or are developed in childhood, often in both eyes. These may be so small that they do not affect vision. If they do, the lenses may need to be removed.

• Radiation cataracts can develop after exposure to some types of radiation.

The eye’s lens is made of mostly water and protein, which is arranged in a precise way that keeps the lens clear and lets light pass through it. But as people age, some of the protein may clump together and start to cloud a small area of the lens. This is a cataract. Over time, it may grow larger and cloud more of the lens, making it harder to see.

Researchers suspect that there are several causes, such as smoking and diabetes. Or, it may be that the protein in the lens just changes from the wear and tear it takes over the years.

The most common symptoms are:

• Cloudy or blurry vision.
• Colors seem faded.
• Glare. Headlights, lamps, or sunlight may appear too bright. A halo may appear around lights.
• Poor night vision.
• Double vision or multiple images in one eye. (This symptom may clear as the cataract gets larger.)
• Frequent prescription changes in your eyeglasses or contact lenses.
• These symptoms also can be a sign of other eye problems. If you have any of these symptoms, check with an eye care professional.

Cataract is detected through a comprehensive eye exam that includes:

• Visual acuity test. This eye chart test measures how well you see at various distances.

• Dilated eye exam. Drops are placed in your eyes to widen, or dilate, the pupils. Your eye care professional uses a special magnifying lens to examine your retina and optic nerve for signs of damage and other eye problems. After the exam, your close-up vision may remain blurred for several hours.

• Tonometry. An instrument measures the pressure inside the eye. Numbing drops may be applied to your eye for this test.

Early symptoms may be improved with new eyeglasses, brighter lighting, anti-glare sunglasses, or magnifying lenses. If these measures do not help, surgery is the only effective treatment. Surgery involves removing the cloudy lens and replacing it with an artificial lens.

A cataract needs to be removed only when vision loss interferes with your everyday activities, such as driving, reading, or watching TV. Sometimes a cataract should be removed even if it does not cause problems with vision. For example, a cataract should be removed if it prevents examination or treatment of another eye problem, such as age-related macular degeneration or diabetic retinopathy.

Sunburn Risks, Treatment and Prevention

Sunburn Risks, Treatment and Prevention

Most, if not all, skin diseases are caused by overexposure to the sun. If the sun does not cause them, many of them are made worse by exposure to the sun’s UV rays. However, there are benefits to sun exposure, particularly in the case of UV rays, which help the

Enjoy a Clearer More Colorful Day

In a normal eye, light passes through a clear lens to the retina, where it is changed into nerve signals that are sent to the brain. The eye’s lens is made mostly of water and protein. Some of that protein may clump together and form what’s called a cataract, which

The Benefits of Cataract Surgery Go Beyond Your Sight

Previous research has suggested links between visual impairment and cognitive decline and/or Alzheimer’s disease in older adults. A common reason for vision impairment in this age group is cataracts: a condition that causes the lens of the eye to become opaque, and blurs the image you see when you focus

From the Editor: Considering Cataract Surgery?

Cataracts are a leading cause of vision loss in older adults, but a relatively simple surgical procedure can restore your sight if you develop them. The procedure has a low risk of complications, and research points to numerous benefits. In this month’s issue we’re looking at a recent study suggesting

Research Sheds Light on Vitamins For Eyesight

Research Sheds Light on Vitamins For Eyesight

Thanks to the landmark Age-Related Eye Disease Study (AREDS and AREDS2), we know that high-dose vitamins for eyesight supplements containing vitamin C, vitamin E, copper, zinc, and the antioxidant beta-carotene helped slow disease progression in people who were at risk for developing advanced age-related macular degeneration, or AMD. We also

21 Calcium Deficiency Symptoms That Will Surprise You

21 Calcium Deficiency Symptoms That Will Surprise You

Calcium, the most abundant mineral in the human body, is best known for its important role in bone health and protection from osteoporosis. However, in addition to its key role in imparting strength to bones and teeth, calcium plays a critical role as a messenger in cell-signaling pathways throughout the

Take Measures to Reduce Your Risk of Falls

You can employ many strategies that will lower your odds of falling and suffering a debilitating injury.

As the number of older adults rises, so does the number of injuries and falls suffered by this population. Among adults age 65 and older, falls are the top cause of injuries and death

6. Medications for Arthritis

Acrucial weapon in the fight against arthritis is medication that, in some cases, slows disease progression as well as easing pain, maximizing joint function, and improving quality of life. There is no one-size-fits-all solution—trial and error may be required to find the drug (or drug combination) that works for you.

6. Medications That Manage Your Cholesterol

You could be following a heart-healthy diet, getting regular exercise, and optimizing your weight and still not have your lipids and cardiovascular risk level where they need to be. When lifestyle changes aren’t enough to control your cholesterol, your physician may prescribe a medication to help you out.
Fortunately, you have

×
Enter Your Log In Credentials
This setting should only be used on your home or work computer.

×
×

Please Log In

You are trying to access subscribers-only content. If you are a subscriber, use the form below to log in.

Subscribers will have unlimited access to the magazine that helps people live more sustainable, self-reliant lives, with feature stories on tending the garden, managing the homestead, raising healthy livestock and more!

This setting should only be used on your home or work computer.

×

Please Log In

You are trying to access subscribers-only content. If you are a subscriber, use the form below to log in.

Subscribers will have unlimited access to the magazine that helps the small-scale poultry enthusiast raise healthy, happy, productive flocks for eggs, meat or fun - from the countryside to the urban homestead!

This setting should only be used on your home or work computer.