What is the difference between progressive and bifocal?

We’ve sorted through the technical jargon and noted the key points. From a cosmesis point of view, no line multifocal or progressive lens is considered more appealing than the bifocal with visible lines separating two vision zones. Provision of intermediate power zone is found in between distance power and near power in the progressive lens for maintaining clear vision while looking at the intermediate distance.

The power of this section can be used to see objects in your immediate zone of vision, or around inches away. A progressive lens’ upper part contains the strength required in clearly seeing in the distance. These lenses support a gradual transition throughout . However, it may be difficult for some people (as much as 10%) to adapt to wearing progressive lenses because it is more specialized in blending than having specific focal areas .

• Both bifocals and progressive lenses are often prescribed for people with presbyopia.
• Unlike bifocals, progressives have a middle or intermediate area.
• Some bifocals have this dividing line straight across, while in other bifocal lens types, a half moon shape is really a part of the lower portion of the eyeglass lenses.

These different lenses support a gradual transition from top to bottom . Adding bifocals or progressive lenses to a prescription is primarily a matter of convenience. Because the eyes age and our dependence on magnification increases, we may need a stronger couple of glasses for reading up close. Sometimes you will notice an individual with two pairs of glasses — one can be used to correct their regular vision while another pair can be used strictly for reading.
You can find two main forms of prescriptions that want different lenses—single vision lens prescriptions and progressive lens prescriptions. When you’re looking into, one of the first questions we ask is whether your prescription is single vision or progressive.

You may feel an initial difference in peripheral vision which will require some slight changes in horizontal head and eye movement. A lot of people will adapt in a couple of hours although some can require given that two weeks. If you are not adapted within a fortnight you need to return for an appointment with the optician that fitted your eyeglass frames to that person. The only way to learn if progressive lenses is wonderful for you would be to try them and observe how your eyes adjust. In the event that you don’t adapt after fourteen days, your optometrist might need to adjust the strength in your lens.