Many special purpose lens designs work well for computer eyewear. Because these lenses are prescribed specifically for computer use, they are not suitable for driving or general purpose wear. The simplest computer eyewear have single vision lenses with a modified lens power prescribed to give the...

After age 40, the single pair of glasses or contact lenses you previously wore generally will no longer give you clear vision at all distances — or at least not without some compromises. These vision problems are caused by presbyopia, which affects all of us beginning in middle age and reduces ...