Do you find yourself squinting to read your phone or struggling to focus on your computer screen? If you're over 40, it's likely that you're experiencing presbyopia, a natural age-related change in your eyes that affects your ability to focus on near objects. Enter progressive lenses – the answer to all your vision needs!
So, what are progressive lenses, you ask? Well, they're an advanced type of multifocal lens that provides clear vision at all distances, from up close to far away. Unlike bifocal lenses that have a visible line separating the two prescription powers, progressive lenses have a gradual change in prescription that allows for a smooth transition between different focal points. This means that you can look down to read a book, look straight ahead to watch TV, or look up to see things in the distance, all without having to switch glasses.
To understand how progressive lenses work, it's helpful to think of the lens as having different "zones" that correspond to different visual needs. The top portion of the lens provides clear distance vision, the middle portion is for intermediate vision (such as computer work), and the bottom portion is for near vision (such as reading). As you move your eyes down the lens, your eyes naturally adjust to the different prescriptions, allowing you to see clearly at all distances without the need for multiple pairs of glasses or a visible line in the lens.
But why are they more expensive than single vision or bifocal lenses, you wonder? The answer lies in the technology used to create these lenses. Progressive lenses use what's called "progressive addition technology" to provide clear vision at all distances. The lens is designed with a gradual curvature that changes from the top to the bottom, allowing for the different prescriptions required for distance, intermediate, and near vision. This requires advanced machinery and precise calculations to create a smooth and accurate lens surface.
Another reason for their higher cost is the customization required to ensure a perfect fit. Unlike single vision lenses, progressive lenses need to be personalized to fit your specific prescription and eye measurements. This customization involves taking into account factors such as the distance between your eyes, the angle at which you hold your head, and your reading posture, to name a few.
So, while progressive lenses may cost more than other types of lenses, their benefits far outweigh the price. They provide clear and comfortable vision at all distances and eliminate the need for multiple pairs of glasses. Plus, with the latest advancements in technology, progressive lenses are now available in thinner and lighter materials, making them even more comfortable to wear.
In summary, progressive lenses are a game-changer when it comes to multifocal vision correction. Their advanced technology and customization make them more expensive than single vision or bifocal lenses, but the benefits they provide are well worth the investment. You can check out different options for your next pair of progressives here!