Many people have expressed concern about potential harm to the eyes from blue light emitted by the screens of our electronic devices. Risks to the eyes from exposure to this light are negligible, but blue light may have other effects on our health.
Research supports the cardiovascular benefits of moderate consumption of dark chocolate; now a study suggests that it may also help support and improve visual perception.
Floaters in the eyes are annoying but generally not harmful. An experimental treatment can remove a certain type of floater with a laser, but without further study it’s too soon to recommend it.
While bacterial conjunctivitis responds to antibiotic treatment, many people with the more common viral type are prescribed antibiotics unnecessarily, which contributes to increased resistance to these medications.
As we age our eyes become susceptible to dryness due to decreased tear production or slowing glands. Other conditions can contribute to dry eye syndrome as well, including looking at the screen of a computer, phone, or tablet for too long. There are a number of simple treatments that can bring relief and prevent infection and other problems.
If you spend lots of time looking at a screen, you may be at risk for “computer vision syndrome,” a cluster of eye-related symptoms that tend to afflict computer users. But is this really a new “syndrome,” or just a fancy name for eye strain? Here, we explore exactly what a syndrome is — and give you some tips to combat this newest addition to the list of technology-related “syndromes.”
When kids pack for summer camp, sunglasses may not always top the supply list. But I made them a priority for my 12-year-old son Carson, who just started rowing camp in Florida, because eyes are vulnerable to damaging ultraviolet rays, which are especially intense near reflective surfaces. Ultraviolet rays can damage the eyes several way, ultimately leading to cataract, glaucoma, macular degeneration, and other thieves of vision. You don’t have to spend a bundle to get a good pair of sunglasses. Just make sure to pick ones that block close to 100% of ultraviolet A and ultraviolet B (UVA and UVB) rays.
“Floaters” and flashes are a common sight for many people. Floater is a catchall term for the specks, threads, or cobweb-like images that occasionally drift across the line of vision. Flashes are sparks or strands of light that flicker across the visual field. Both are usually harmless. But they can be a warning sign of trouble in the eye, especially when they suddenly appear or become more plentiful. That can be the sign of a tear in the retina, the patch of light-sensitive cells along the back of the eye that captures images and sends them to the brain. A retinal tear can lead to a retinal detachment, which can lead to permanent vision loss.
Many adult Americans take aspirin every day, often to prevent a heart attack. Headlines about a study published today linking aspirin use with age-related macular degeneration (AMD) may scare some aspirin users to stop, but that’s the wrong message. In the study, aspirin’s effect on vision was small—far smaller than the lifesaving benefit it offers people with heart. Macular degeneration occurs when something goes wrong with the macula, a small part of the eye’s light-sensing retina. The macula is responsible for sharp central vision. In the new study, published in JAMA, 1.4% of long-term daily aspirin users and 0.6% of non-users developed macular degeneration over a 20-year period. The American Academy of Ophthalmology recommends that people age 65 and older have comprehensive exams at least every other year to check for macular degeneration and other eye problems.
There are several good reasons to have cataracts fixed. Restoring clear, colorful vision certainly tops the list. A study published today in the Journal of the American Medical Association (JAMA) adds another benefit—a lower risk of breaking a hip. Researchers analyzed the effect of cataract surgery on the frequency of hip fracture in the following year. Among more than a million adults ages 65 and older who had cataracts, the frequency of hip fracture was 16% lower among those who had cataract surgery compared with those who didn’t have it, and the reduction in risk was even greater (23%) if the cataract was severe. Besides the immediate benefit of improved vision on everyday activities, and the longer-term one of preventing broken hips, cataract surgery may have other, less obvious benefits. These include more independence, better physical fitness, and better mental health.