New types of eyeglass lenses
Unknown benefits of blue-blocking lenses
Blue-blocking lenses are traditionally used to block those harmful blue rays. However, blue-blocking lenses have been proved by scientists from John Carroll University in Cleveland to provide additional benefits. These new lenses are claimed to benefit people who have difficulty in falling asleep at night. Blue light rays are supposed to delay the production of melatonin, which helps induce sleep as part of natural biological clock. In this case, by blocking blue rays during several hours before bedtime, these blue-blocking lenses can actually improve sleep patterns. In addition, those researchers say that blue-blocking lenses can also reduce symptoms of attention-deficit hyperactivity disorder.
Progressive lenses slow down myopia progression
A study published in the February 2007 issue of Investigative Ophthalmology & Visual Science showed a difference of myopia progression between children wearing single vision eyeglass lenses and those wearing progressive-addition lenses (PALs). In the past, most children who were myopic wore single-vision eyeglasses for distance vision. With the invention of progressive-addition lenses, researchers say that the kids can benefit more from these lenses. Correcting vision at near, intermediate and far ranges, progressive lenses can slow myopia progression in some children.
iZon eyeglasses improve night vision
iZon Wavefront-guided eyeglasses from Ophthonix Company are claimed to greatly improve night vision. Compared with conventional lenses, these new lenses enable drivers to identify pedestrians by an average of 330 milliseconds or 30 feet sooner when driving 55 miles per hour. The production of iZon lenses uses a Z-View Aberrometer to measure the patient’s eyes. This measurement involves higher-order aberrations that are beyond conventional eye exams. For certain, iZon lenses are customized to meet personal needs.
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