Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
A Quasi-Bifocal is defined as an ophthalmic lens that incorporates a subtle: non-traditional boost of magnifying power in the lower portion of the lens: without a visible line or a full progressive corridor. It is often referred to as a:
A traditional bifocal has two distinct: powerful focal points (distance and near). A quasi-bifocal is essentially a single-vision lens with a very mild add power (typically between +0.50 and +1.25). This subtle change allows the eye muscles to relax during phone or computer use without the visual jump or peripheral distortion of a standard multifocal.
The primary users are pre-presbyopes: individuals in their late 30s or early 40s who are starting to feel eye strain at the end of the day but are not yet ready for full progressives. It is also excellent for students or office workers who spend more than six hours a day looking at digital screens at a close distance.
Yes: by providing a small amount of magnification at the bottom of the lens: the ciliary muscles in the eye do not have to work as hard to maintain a clear focus on digital text. This reduces the frequency of accommodative lag: which is a leading cause of the headaches and blurred vision associated with Computer Vision Syndrome.
Most major lens manufacturers offer a quasi-bifocal or boost lens: including:
No: the quasi-bifocal is completely seamless and looks exactly like a standard single-vision lens. There is no visible segment or window at the bottom: making it a popular choice for those who want the benefits of near-support without the aesthetic tell of a bifocal.
You can: because the top of the lens is your standard distance prescription: you can wear them for driving: walking: and watching TV. They are designed to be lifestyle lenses that remain comfortable in all environments while providing extra help only when you look down to read.