We know there are various kinds of bifocal glasses types with different functions. Though they are all bifocal glasses, there exist many differences between them. So before you purchase bifocal glasses, you should make a clear awareness of the types of bifocal glasses.
For many senior citizens, the bifocal glasses
are needed urgently. Usually, the single vision eyeglasses are enough for them. However, bifocal glasses can always reduce eye strain in early stages. Customers should make a consultation with an optometrist before choosing suitable bifocal glasses types, because there are various styles of bifocals available, but they have many differences.
Usually, the nearsightedness and farsightedness are the most common vision problems. In most cases, people with vision problem suffer from either nearsightedness or farsightedness. Meanwhile, most prescription glasses are designed to correct only one type of refractive error. But for some eyeglasses wearers, they have the above problems both. Obviously this kind of prescription glasses cant meet their demands.
As for the bifocal glasses, the lower portion is for closer objects and the upper part for distance vision. The reason for this design is that people always put their heads slightly down when they try to read and write. However, customers will always get unsatisfied if they expect bifocal glasses
types to deal with all situations. When it comes to computer use, the common bifocal design is not suitable, because the computer monitor is directly in front of the lenses.
So choosing a pair of right glasses is very important. Before we make the decision, we should have a clear sense.