Changes in vision seem to go hand in hand as you grow older. When you age, not only does your body muscle lose its flexibility, even your eye muscle loses its functionality to give you 100% eyesight.
Presbyopia is a common condition among middle aged people who find it hard to focus on different ranges of objects. This happens because, with age, your eyes lose the ability to focus on objects effectively. These changes often result in the need for bifocal lenses.
What's a bifocal lens? Let’s find out.
A bifocal lens is a specially designed lens that has two different areas of focus within its vision area. A bifocal lens comes with two different focus areas to help people see clearly at different focus ranges.
As we have already said, a standard bifocal lens is segmented into two focus areas. It is typically designed to be placed at the line where your eyelid falls naturally. This segmentation of bifocal lenses has gone through many evolutions over the decades, and today, it has different variations to offer.
The full bottom half.
The half moon or the D segment.
The Ribbon segment.
The Round segment.
If you look closely, you will find a bifocal lens that has visible lines. These visible lines sometimes create problems for the wearer while walking. To reduce such problems, you can go with round bifocal lenses, which have a less visible line.
The great thing about wearing a bifocal lens is that it helps the wearer correct nearsightedness and farsightedness in one pair of glasses.
The whole lens is divided into two segments. The top of the lens consists of a prescription of farsightedness. When you walk or look around, you naturally look through the top of the lens.
The bottom lens contains the prescription for shortsightedness. This portion of the lens covers the entire bottom portion. It helps you look at the object that is closer to you. For instance, you are working on your desk, reading, or doing any other closer tasks.
Flat Top: The flat bottom bifocal lens is common among people. The flat top type has a half moon of a D shape on its side. This is the segment that is used to see closer objects.
Blended: Blended bifocal lenses were popular before no-line bifocal were introduced in the market. They are typically made with a round segment where the edges of the two lenses are blended in together.
Round Segment: In this type of bifocal lens, there is a round segment that is used while reading or looking at close things.
Executives: An executive bifocal is quite simple. The whole lens is divided into two segments with a clear straight line. The top part is for farsightedness, and the bottom part is for nearsightedness.
Progressive: progressive lenses are the ones with no like at all. Although a single frame comes with two types of lenses, you will not find the line. This is because of their invisibility. As you cover your eyes from top to bottom, you will find that your reading power is increasing.
The main draw of a bifocal lens is that they are multi-functional. They prevent you from switching between two frames for various work. One single frame will get the job done.
If you want to look at the distance, just look straight. And if you want to read what's written on those products, look down. As simple as that.
Let’s look at the benefits more clearly.
The main draw of a bifocal lens is that they are multi-functional. They prevent you from switching between two frames for various work. One single frame will get the job done.
If you want to look at the distance, just look straight. And if you want to read what's written on those products, look down. As simple as that.
Let’s look at the benefits more clearly.
We have already said that bifocal lenses are specified to offer convenience to both farsightedness and short-sightedness in a single lens. Therefore, if you are investing in bifocal lens mean, you are preventing yourself from wasting money to have an alternative lens for far/shortsightedness.
With a bifocal lens, you can see objects from a distance while looking straight and slowly looking downward to increase the focus.
As we have already mentioned, having a bifocal lens prevents you from managing two different glasses for different needs. However, you can get the job done with one pair of glasses with a bifocal lens in them.
Although bifocal lenses are a customizable item in the market, if you see the bigger picture, you are saving a lot. In fact, with the right customization, you can get yourself Bifocal Sunglasses.
That means now not only can you see objects near and far, you can also protect your eyes from harmful UV rays of the sun while being out.
Most people question how difficult it will be to adjust with two different focus points. Fortunately, with the latest technology, lenses have become more sophisticated when it comes down to offering multiple fields of vision.
Yes, the initial use might create a problem or two, but with regular use, you will soon get used to the differences.
Potential Visual Distortion: Bifocal lenses are the reason behind the majority of visual distortion experiences. For instance, you will experience a nightmare while climbing stairs. When you look down, you're looking through the section used for reading. As a result, you might find your feet looking bigger, making it difficult to read the environment.
Distracting Bifocal lines: While some people enjoy two focus lenses in one frame, some find it hard to cope with the differences line creates. This happens because, using two different lens types, one cuts their line of sight in half, reducing the field of vision.
When people develop Presbyopia, they find the need to wear bifocal glasses. It is difficult to understand whether you will need bipolar glasses.
As you age, your cornea muscles lose their flexibility and find it hard to focus on both near and distant objects.
After you cross 40, you will find that you are having problems while reading in a darker environment or reading labels of medicine. This is when you will need to wear bipolar glasses.