Myopia, or nearsightedness, a vision condition in which close objects are seen clearly, but objects farther away appear blurred, is extremely prevalent in our society and appears to be on the rise. A recent article estimated the prevalence of myopia in people aged 12 to 54 increased from 25 percent in the years in the early 1970s, to 41.6 percent in the years 1999 to 2004.
Now, a new study suggests that treating myopia early with bifocal lenses—glasses that use two corrective powers in each lens–instead of single-vision lenses may slow progression of the eye condition in children.
Many factors are felt to contribute to myopia, most important being genetic factors. Children who are myopic generally have parents who are myopic.However, environmental factors are possible contributors and attempts are being made to alter these to slow the progression of myopia.