When purchasing lenses as per your prescription or customized needs, it is imperative to keep in mind the features offered by the lenses, by having properties that are suited for your eyesight. Since our eyes are constantly shifting the field of vision and the focus must be kept on multiple objects at once, it is natural that after a certain age the ability to swiftly do the same becomes difficult. Old age and lifestyles greatly affect your eyesight, where the nerves and muscles within the eye become weaker due to strain. This results in the eye conditions such as myopia (short-sightedness) and presbyopia (long-sightedness) which require special prescription lenses.
The solution to the problem of shifting focus is a bifocal lens. As the name suggests, it offers you two preferred fields of focus, for instance, having focal options for close reading as well as to seeing distant objects. A bifocal lens is an integral cornerstone in the study of vision correction as it is one of the first examples of eyewear offering two solutions in a single pair of glasses. Due to its convenience and universal demand, a bifocal lens is one of the most sought lenses chosen by customers for their eyewear needs. Let us take a closer look at the basics of a bifocal lens and its benefits.
What is Bifocal Lens?
A bifocal lens is a special purpose-designed lens that offers segmented fields of focus within its vision area. Multifocal lenses are defined as having two or more power prescriptions built into one lens to help you see different objects at different distances in a seamless manner. Therefore, one can understand a bifocal lens as a dual-purpose lens that can cater to your near-sighted or long-sighted needs.
A standard bifocal lens is usually segmented into two, where for objects far away you will have to look through the distance portion of the prescription lens, and for objects or reading material placed closer than 18 inches you will look through the bifocal segment.
Bifocals are typically designed to be placed at the line that falls at the same height as your lower eyelid. The segmentation of a bifocal lens has had many evolutions through the decades, one can choose from the following as per their discretion:
• The full bottom half or The Franklin (famously dubbed after Benjamin Franklin who is often touted as the inventor of the bifocal lens)
• A half-moon or D segment
• A round segment
• A ribbon segments
Bifocal lenses usually have visible lines at the point of segmentation, but round segments in bifocals are less visible than a standard flat-top or half-moon bifocal lens. Now that the fundamentals of a bifocal lens have been established, let us look at the benefits.
Benefits of Wearing Bifocal Lens
1. Dual Purpose:
Bifocal lenses are designed to be convenient and effective owing to their ability to offer two different prescription needs in one pair. Investing in a bifocal lens prevents the need to alternate between two separate pairs of glasses for different purposes. With the bifocal lens, you can look straight ahead or downwards as per the focal requirements
2. Affordable:
As aforementioned, one pair of glasses is always more cost-effective than buying and maintaining two different pairs. Although it is a customized option on the market, a bifocal lens is still the most affordable option in multifocal glasses and is also cheaper than progressive lenses which are a more advanced version of multifocal lenses.
3. Easier to Adjust:
New age multifocal lenses and progressive lenses are more sophisticated in terms of offering multiple fields of vision in one pair, but they require a long adjustment period, where your eyes must train to see through different areas of the lens as per requirement. Bifocals, however, are easy to get accustomed to.
A bifocal lens as per prescription is a long-term investment to make in terms of your eye health and vision requirements. With reputed makers such as Titan Eyeplus, you can find your ideal match of bifocal eyewear that is timeless, functional, and accessible.