glasses
Outdoor Play Prevents Nearsighted Vision
Posted by Elvin Adams on
If you let your children get plenty of play outdoors they may never need glasses for nearsightedness. Nearsightedness, (myopia), is very common. Nearsighted school children are often assigned seats in the front of the classroom and usually need to wear glasses to see distant objects clearly. It is estimated that nearsightedness affects 42 percent of the people in the United States.
A research team in Cambridge England analyzed data from eight other studies that examined the amount of time children spent playing outside and correlated that with the prevalence of myopia. More than 10,000 children were examined in these studies.
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Tripping Over Obstacles? Better Examine Your Glasses
Posted by Fred Hardinge on
Risk of failing greater in older people when wearing multifocal glasses and performing a secondary visual task.
Multifocal lenses have been a great blessing to many of us. However, when obstacles at ground level are viewed with these glasses, blurring and depth perception problems can occur. Researchers from New Zealand tested 30 community dwelling individuals while walking with multifocal glasses and with single-lens glasses.
Study subjects were asked to walk a 15 meter (50 ft) walkway where they had to step over foam-block obstacles placed randomly. When they wore multifocal lenses their pace was significantly slower than when wearing single-lens glasses. They then walked the same walkway while reading letters at eye-level posted at the end. During this dual task they contacted the objects much more frequently than when wearing multi-focal lenses.