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Visual Defect / Disturbance News

Could Regular Pot Smoking Harm Vision?

Posted 17 hours ago by Drugs.com

THURSDAY, Dec. 8, 2016 – Smoking pot regularly may be linked to a limited degree of vision impairment, a new French study suggests. The finding stems from very preliminary research involving just 52 participants, 28 of whom were regular marijuana users. That meant they used marijuana at least seven times a week. The question posed in the study: Does marijuana affect the healthy functioning of retinal ganglion cells (RGCs), which are situated on the surface of the retina? These cells receive incoming visual information, and are considered the first link in the pathway that connects the retina to the part of the brain where eyesight is processed. The answer: Regular pot users do appear to experience a slight delay in their RGC signaling. And that could indicate impaired vision, the study authors said. Still, experts stressed that the findings remain preliminary and people shouldn't be ... Read more

Related support groups: Smoking, Smoking Cessation, Cannabis, Visual Defect/Disturbance

'Halo' Effect Common After Lasik Eye Surgery

Posted 7 days ago by Drugs.com

FRIDAY, Dec. 2, 2016 – Nine out of 10 Lasik laser eye surgery patients report satisfaction afterwards. But a sizable percentage experience new visual disturbances – like seeing halos around lights – up to six months after the procedure, a new study finds. "While Lasik has long since been proven safe and effective over decades of use, a small but significant subset of patients report post-operative effects including glare, halos and other vision symptoms, as well as dry eyes," said Dr. Christopher Starr. He's an associate professor of ophthalmology at Weill Cornell Medicine/NewYork-Presbyterian Hospital in New York City. "These effects typically resolve over time, either during the healing process, which can take up to 12 months, or with additional treatments if needed," said Starr, who wasn't involved in the new study. Of hundreds of patients surveyed, fewer than 1 percent said any ... Read more

Related support groups: Eye Conditions, Retinal Disorders, Myopia, Visual Defect/Disturbance

Lengthy Space Missions May Harm Astronauts' Vision

Posted 11 days ago by Drugs.com

MONDAY, Nov. 28, 2016 – Researchers have pinpointed the cause of a vision problem affecting astronauts who have completed long-duration space missions. The condition – called visual impairment intracranial pressure (VIIP) – has been reported by nearly two-thirds of astronauts after extended time on the International Space Station. The astronauts experienced blurred vision and were found to have structural changes, such as flattening at the back of their eyeballs and inflammation in their optic nerves. VIIP is caused by changes in the volume of clear fluid found around the brain and spinal cord, according to the study. "People initially didn't know what to make of it, and by 2010 there was growing concern as it became apparent that some of the astronauts had severe structural changes that were not fully reversible upon return to Earth," study lead author Noam Alperin said in a news ... Read more

Related support groups: Eye Conditions, Retinal Disorders, Visual Defect/Disturbance, Refraction - Assessment

Consider Eye Safety When Choosing Kids' Toys

Posted 15 days ago by Drugs.com

THURSDAY, Nov. 24, 2016 – Are you planning to shop on Black Friday for holiday gifts for the kids? Experts urge you to keep an eye on eye safety when making your choices. U.S. emergency rooms treated 251,800 toy-related injuries in 2014, according to a report last year from the U.S. Consumer Product Safety Commission. Forty-four percent of those injuries were to the head and face area. And a recent study in the journal JAMA Ophthalmology said basketball, baseball and air guns caused nearly half of all primary sports-related eye injuries. "When giving the gift of sports equipment, Prevent Blindness strongly urges also providing sports eye protection," Hugh Parry, president and CEO of Prevent Blindness, said in a news release from the group. "An eyecare professional can provide guidance for the best protection for each sport and athlete," he added. Prevent Blindness also offers these toy ... Read more

Related support groups: Eye Conditions, Eye Dryness/Redness, Visual Defect/Disturbance

Safety Group Releases Annual Dangerous Toys List

Posted 16 Nov 2016 by Drugs.com

WEDNESDAY, Nov. 16, 2016 – With the holiday season approaching, the consumer watchdog group World Against Toys Causing Harm (WATCH) has released it annual list of the most dangerous toys. The organization urges parents to be cautious when buying toys this holiday season, noting that since January 2015 there have been recalls involving more than 800,000 individual products, including 500,000 this year alone. According to WATCH, every three minutes a child is treated in a U.S. emergency room for a toy-related injury. Since January 2015, there have been at least 19 toys with safety defects recalled in the United States. These recalls involved more than 800,000 units of toys – including 500,000 this year, the group said in a news release. "Consumers can inspect new toys as well as toys already in homes and schools for dangerous hazards and stay away from any toys that may have been ... Read more

Related support groups: Eye Conditions, Eye Dryness/Redness, Fracture, bone, Corneal Abrasion, Visual Defect/Disturbance, Wound Cleansing, Wound Sepsis, Prevention of Fractures, Wound Debridement

Doctors Use iPads to Treat 'Lazy Eye,' With Mixed Results

Posted 11 Nov 2016 by Drugs.com

THURSDAY, Nov. 10, 2016 – Does playing video games on an iPad work better than standard eye-patching for improving vision in children with lazy eye? Two new studies in the journal JAMA Ophthalmology reach seemingly contradictory answers. In one, patching worked better. In the other, gaming outperformed standard treatment. "If parents prefer their child to play a computer game for an hour a day rather than wear a patch for what is usually two hours a day, then the computer games are a reasonable alternative," said ophthalmologist Dr. John Sloper, who wrote a patch-versus-play editorial for the same journal. "But there is no evidence that they produce better results in the long term." Sloper is an honorary consultant in the strabismus and pediatric service of Moorfields Eye Hospital in England. An estimated 3 percent of kids in the United States have amblyopia, or lazy eye. In these ... Read more

Related support groups: Eye Conditions, Visual Defect/Disturbance

Nearly 6 in 10 Diabetics Skip Eye Exams, Study Finds

Posted 10 Nov 2016 by Drugs.com

THURSDAY, Nov. 10, 2016 – Almost two-thirds of people with diabetes don't get annual eye exams, despite having an increased risk for serious eye disease and vision loss, researchers say. About one in 10 Americans has diabetes. Having a dilated eye exam yearly or more often can prevent 95 percent of diabetes-related vision loss, the study authors said. "Vision loss is tragic, especially when it is preventable," study lead author Dr. Ann Murchison said in a news release from the American Academy of Ophthalmology (AAO). "That's why we want to raise awareness and ensure people with diabetes understand the importance of regular eye exams," said Murchison. She is director of the eye emergency department at Wills Eye Hospital in Philadelphia. The study included information from nearly 2,000 people aged 40 and older with type 1 or type 2 diabetes. The researchers found that 58 percent didn't ... Read more

Related support groups: Diabetes, Type 2, Eye Conditions, Smoking, Smoking Cessation, Diabetes, Type 1, Insulin Resistance, Pre-Diabetes, Diabetes Mellitus, Retinal Disorders, Diabetic Retinopathy, Abnormal Glucose Tolerance, Visual Defect/Disturbance, Retinopathy

Some Primates Have Vision Troubles as They Age

Posted 8 Nov 2016 by Drugs.com

TUESDAY, Nov. 8, 2016 – Just like humans, some primates start having difficulty seeing things up close as they age. Researchers reviewed photos of 14 wild bonobos as they groomed each other. The primates were between 11 and 45 years old. The older they were, the longer they stretched their arms as they groomed, the study reported. The findings were published Nov. 7 in the journal Current Biology. "We found that wild bonobos showed the symptoms of long-sightedness around 40 years old," study author Heungjin Ryu, from the Primate Research Institute at Kyoto University in Japan, said in a journal news release. "We were surprised that the pattern found in bonobos is strikingly similar to the pattern of modern humans," he said. There have also been anecdotal reports of similar behavior in chimpanzees. Long-sightedness might hinder the social lives of older bonobos and could explain why ... Read more

Related support groups: Visual Defect/Disturbance, Myopia

Paintball Causes Many Vision-Robbing Eye Injuries

Posted 3 Nov 2016 by Drugs.com

THURSDAY, Nov. 4, 2016 – Paintball guns pose the greatest risk of vision loss among the sports most commonly associated with eye injuries, a new study finds. Basketball, cycling and baseball injuries to the eye occur more often than paintball-related eye accidents. But the popular air guns are far more likely to impair sight when an eye injury occurs, at least in the short term, researchers say. The findings emphasize the importance of eye protection, said Dr. Matthew Gardiner, director of emergency ophthalmology services at Massachusetts Eye and Ear in Boston. "It's important to be aware of the threat to vision in these activities and wear safety glasses," said Gardiner, who wasn't involved in the study. "Simple preventive measures can solve almost all these problems." The new report is the most extensive analysis of its kind, said lead author Dr. R. Sterling Haring, a research fellow ... Read more

Related support groups: Eye Conditions, Retinal Disorders, Ophthalmic Surgery, Visual Defect/Disturbance

Health Tip: Are Your Screens Causing Eye Strain?

Posted 31 Oct 2016 by Drugs.com

-- Staring at your TV, computer, smart phone or tablet can cause a problem known as computer vision syndrome, or digital eye strain. The American Optometric Association says to watch for these warning signs: Feeling that your eyes are strained. Developing headaches. Having blurred vision. Developing dry eyes. Having pain in your shoulders and neck. Read more

Related support groups: Eye Conditions, Dry Eye Disease, Visual Defect/Disturbance

Undiagnosed Eye Problems Pose Risks for Migrant Farm Workers

Posted 10 Oct 2016 by Drugs.com

MONDAY, Oct. 10, 2016 – Vision problems are common among migrant farm workers, but many never get eye exams, a new study shows. Researchers studied 289 Hispanic migrant farm workers in North Carolina who did not use eyeglasses. About three-quarters of them had never had an eye exam. Of those, 70 percent said they never considered having one, and 14 percent cited cost or lack of insurance. Vision tests found that about 2 percent of the farm workers had moderate to severe problems with distance vision. About 7 percent had impaired near vision. Predictably, older workers had more problems with their eyesight. Twenty-one percent of those 40 and older had moderately to severely impaired near vision. About 5 percent had distance vision problems. Among younger workers, 0.5 percent had trouble with either near or distance vision. "Vision examinations indicate that a number of farm workers ... Read more

Related support groups: Eye Conditions, Myopia, Visual Defect/Disturbance

Health Tip: Remember Eye Protection at Work

Posted 27 Sep 2016 by Drugs.com

-- Some jobs pose a heightened risk of eye injury, especially if the job involves machinery or chemicals. The American Optometric Association recommends: Familiarizing yourself with workplace dangers that could threaten your eye safety. Using devices such as work screens or machine guards at work. Wearing appropriate protective gear for your eyes. Making sure eye protection is in good condition, replacing any that's damaged. Read more

Related support groups: Eye Conditions, Keratitis, Corneal Ulcer, Corneal Abrasion, Visual Defect/Disturbance

Laser Device Approved for Nearsightedness

Posted 14 Sep 2016 by Drugs.com

WEDNESDAY, Sept. 14, 2016 – The VisuMax Femtosecond Laser has been approved by the U.S. Food and Drug Administration to treat nearsightedness in candidates 22 and older. Nearsightedness, medically called myopia, is present when a person can see close objects clearly, but not objects farther away. Common causes include a misshapen cornea or excess length of the eyeball, the FDA said in a news release. The procedure to permanently reshape the cornea is not appropriate for everyone, the agency said. Of 328 people clinically evaluated six months after having the surgery, 88 percent had 20/20 vision, the FDA said. The most common complications from the procedure included surgical debris, dry eye, glare and the appearance of a halo. The device is produced by Carl Zeiss Meditec Inc., based in Dublin, Calif. More information Learn more about this approval from the FDA. Read more

Related support groups: Eye Conditions, Myopia, Visual Defect/Disturbance

Immune-Based Drug May Ease Chronic Eye Condition

Posted 8 Sep 2016 by Drugs.com

WEDNESDAY, Sept. 7, 2016 – People with chronic eye inflammation known as uveitis may be able to keep the condition at bay with the immune-suppressing drug Humira (adalimumab), a new study finds. "Humira doesn't cure uveitis, but it does cause it to become quiet," said lead researcher Dr. Glenn Jaffe. He's a professor of ophthalmology at Duke University School of Medicine in Durham, N.C., and a consultant for Humira's maker, AbbVie. "The hope is while the disease is in a quiet state, the disease activity just burns itself out – but it can also come back," he said. The U.S. Food and Drug Administration approved Humira for the treatment of uveitis in June. The results of the study were published Sept. 8 in the New England Journal of Medicine. The study was funded by AbbVie. Uveitis – a term used to describe a group of inflammatory diseases inside the eye – can cause loss of vision and ... Read more

Related support groups: Prednisone, Eye Conditions, Humira, Methylprednisolone, Prednisolone, Hydrocortisone, Medrol, Cortisone, Dexamethasone, Triamcinolone, Betamethasone, Budesonide, Decadron, Entocort, Uveitis, Solu-Medrol, Entocort EC, Cortef, Medrol Dosepak, Celestone

Laser Pointers Can Cause Serious Eye Damage in Kids

Posted 1 Sep 2016 by Drugs.com

THURSDAY, Sept. 1, 2016 – Laser pointers may look harmless enough, but when children play with them kids can end up with blurry vision, blind spots or potentially permanent vision loss, eye experts report. A new study details the cases of four children, aged 9 through 16, whose horseplay with laser pointers caused dramatic injury to the retina, the light-sensitive tissue at the back of the eye that is essential to seeing clearly. The cases "bring to light this is happening more frequently," said study author Dr. David Almeida, an ophthalmologist in private practice in Minneapolis. "It was previously thought this was a one-in-a-million event. It's still probably a rare to uncommon reaction, but it's not a never reaction," Almeida said. Part of the problem is unreliable labeling of laser pointers, which are typically sold in office supply stores and online, the study found. Prior ... Read more

Related support groups: Eye Conditions, Retinal Disorders, Visual Defect/Disturbance

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