Sometime after age 40, you will begin to notice the symptoms of presbyopia, including that feeling that your arms “aren’t long enough” to hold a newspaper or magazine at a position where you can read it clearly.
While most presbyopes these days choose line-free progressive lenses, conventional bifocals have some advantages over progressives. In particular, bifocal lenses usually provide wider reading than progressive lenses while with a set back of “image jump” from far to near vision.
Though multifocal lenses usually are prescribed for adults over age 40 to compensate for presbyopia, in some cases bifocals are prescribed for children and young adults who have eye teaming or focusing problems that cause eye strain when reading.
