Lens replacement because of cataracts may improve sleep in seniors, finds study

Seniors who get new lenses implanted during cataract surgery may not only see better but also experience better sleep, suggests a new study of how light entering the eye regulates the body’s internal clock

Lens replacement because of cataracts may improve sleep in seniors, finds studyIn the small laboratory study, researchers determined that people with new lenses spent more time in deep sleep and performed better on tests of cognition than healthy age-matched individuals, according to the results published in JAMA Ophthalmology. “The main take-home message is that cataract lens replacement may be associated with improved circadian rhythms, better cognitive […]

Man takes entire bottle of Viagra, develops problems in vision

Indeed, consuming excessive amounts of sildenafil, the active ingredient in Viagra, may be toxic for cells in the eye. This happened to a man in Massachusetts who developed vision loss after consuming an entire bottle of Viagra, according to a news report

Man takes entire bottle of Viagra, develops problems in visionThe man, who is in his mid-50’s, drank a 30-millilitre bottle of liquid sildenafil all at once. The bottle contained 750 milligrams of the erectile dysfunction drug, about 10 times the recommended dose, according to the report, published today (Jan. 10) in the journal JAMA Ophthalmology. Then, the eye problems began and did not go […]

This is why sleeping with your contact lenses on is a dangerous habit

Do you ever fall asleep while wearing your contact lenses? If you’ve done it, you know the morning struggle to get those dried out lenses unstuck from your eyeballs. It happens a lot. Sleeping in lenses was the most common offense reported by people who wear contacts. You know it’s bad for your eyes, but how bad is it? According to health experts, falling asleep, or even napping, without removing your contact lenses can significantly increase the likelihood of serious health problems

This is why sleeping with your contact lenses on is a dangerous habitSo you dozed off without removing your contact lenses. Even though we are adequately warned against doing this, it remains one of the most commonly reported behaviours among people who use contacts. It looks like a lot of us underestimate how dangerous the habit can be. “It’s like having a plastic bag over your head […]

Chemical in cigarette smoke may damage visions, cautions study

US researchers have highlighted a connection between cadmium exposure and impaired contrast sensitivity. Writing in JAMA Ophthalmology, scientists described their findings from an observational study of 1983 participants from the Beaver Dam Offspring Study

Chemical in cigarette smoke may damage visions, cautions studyExposure to a chemical in tobacco smoke could make it more difficult for people to see in low-contrast conditions, such as low light, fog or glare, a new study suggests. Researchers found that higher levels of cadmium in the blood were associated with diminished contrast sensitivity, they report in JAMA Ophthalmology. “This particular aspect of […]