Single vision lenses provide clear vision at one distance—whether that’s for seeing far away, up close, or somewhere in between. They’re ideal for patients under 40 who typically only need correction for one range of vision. For those in their 40s and beyond, age-related changes in the eyes often require multifocal lenses, such as bifocals, trifocals, or progressives, to see clearly at multiple distances.
Progressive lenses offer a seamless solution for seeing clearly at multiple distances. Designed with distance vision at the top, the prescription gradually changes as you move down the lens—providing clear vision at intermediate and near (reading) ranges. This allows wearers to see at virtually any distance simply by adjusting where they look through the lens.
Unlike traditional multifocal lenses, which typically support only two or three fixed zones, progressive lenses offer smooth, uninterrupted vision across an infinite range. They’re a popular choice for patients over 40 experiencing presbyopia, as they eliminate the need to switch between multiple pairs of glasses.
While progressive lenses offer many advantages, they do come with a brief adjustment period and may have slight peripheral distortion. However, most patients adapt quickly and find progressives both convenient and aesthetically superior—thanks to their no-line design that looks just like a single vision lens.
Bifocal lenses have been in use for over a century—first invented by Benjamin Franklin in 1784—and remain a reliable option today. These lenses feature two distinct viewing areas: distance correction in the top portion and a dedicated reading segment below, separated by a visible line. Bifocals allow wearers to switch between near and far vision without changing glasses. Some variations can also be customized to include intermediate (computer) vision. The main limitation is that bifocals only correct for two specific distances, unlike progressive lenses, which offer continuous vision across all ranges. However, bifocals do provide a wide, stable viewing area for both near and distance vision—making them a good choice for those who prefer simplicity and don’t mind the visible line.
Trifocal lenses are similar to bifocals but include three distinct viewing zones instead of two. These lenses feature two visible lines that separate the different prescriptions: distance vision at the top, intermediate (arm’s length) vision in the middle, and reading vision at the bottom. This setup allows wearers to see clearly at multiple fixed distances without switching glasses. While trifocals are effective, the addition of an intermediate zone means the reading area is smaller than what you’d find in a traditional bifocal. Additionally, many patients find the two visible lines less appealing and prefer the seamless appearance of progressive lenses, which offer a more modern, no-line design.
We can customize computer lenses specifically for the distance you sit from your screen, helping reduce eye strain during extended computer use. Depending on your needs, computer glasses can be made with single vision or multifocal lenses. We also offer BlueProtect lenses, which help filter high-energy blue light from digital screens—reducing eye fatigue and supporting better long-term eye health. An anti-reflective coating can minimize glare and improve visual comfort throughout your workday.
1.67 hi-index lenses are great for moderately high prescriptions.
1.74 hi-index lenses are the thinnest available and best suited for very high prescriptions.
Hi-index lenses help minimize the “coke-bottle” effect and provide a more flattering look in your frames—without compromising on visual clarity.
Polycarbonate is a lightweight, impact-resistant lens material that offers excellent protection and durability. Its shatter-resistant properties make it ideal for children, active individuals, and those needing safety or sports eyewear. Because polycarbonate lenses are thinner and stronger than standard plastic, most patients without high prescriptions choose this material for everyday use—it provides a good balance of clarity, comfort, and safety.
Trivex is a shatter-resistant lens material that offers excellent impact protection along with slightly better optical clarity than polycarbonate. Like polycarbonate, Trivex is commonly used in safety glasses and sports eyewear due to its durability and lightweight feel. While Trivex provides superior optics and comfort, it is typically more expensive than polycarbonate. For this reason, many patients opt for polycarbonate as a more affordable alternative—especially when the optical difference is minimal for their prescription needs.
Antireflective CoatingsAnti-reflective (AR) coatings reduce glare from screens, headlights, and overhead lighting—helping to improve visual clarity, reduce eye strain, and enhance night driving. They also make your glasses look better by eliminating reflections, so others see your eyes more clearly. Lower-end AR coatings are often prone to smudging, discoloration, and cracking when exposed to heat—making lenses difficult to wear over time. At 512 Eye, we only offer high-quality AR coatings that are more durable, smudge-resistant, and designed to hold up to daily use without peeling or haze. If you spend a lot of time on digital devices or driving at night, AR coatings are a smart and practical upgrade.
Blue Protect is a specialized anti-reflective coating designed to reduce exposure to blue and violet light emitted by TVs, computer monitors, tablets, smartphones, and other digital screens. While early studies suggested that blue light may contribute to eye diseases like macular degeneration, more recent research has challenged that idea. The long-term risks of blue light remain unclear—but its short-term effects are better understood.
Blue light has been shown to disrupt REM sleep patterns, particularly when using screens before bed. Blue Protect coatings can help minimize eye fatigue, improve visual comfort during screen time, and may support better sleep quality for sensitive individuals.
At 512 Eye, we recommend Blue Protect to patients who spend extended hours on digital devices or who are concerned about screen-related eye strain or disrupted sleep.
Have you ever gotten a new pair of glasses and noticed that your vision was clear—but not quite sharp? That slight distortion may be caused by higher-order aberrations in the eye, which aren’t corrected by standard lenses.
Free-form lenses, also known as digital lenses, are made using advanced computer-controlled surfacing technology that allows for more precise customization. This process can reduce higher-order aberrations and provide noticeably sharper, clearer vision for many patients. Digital lenses are available in both single vision and progressive designs, making them a great option for those seeking enhanced visual clarity and comfort in their everyday eyewear.
Scratch-resistant coating is a clear protective layer applied to the front surface of eyeglass lenses. It helps harden the lens surface, making it more resistant to everyday wear and tear—such as accidental drops or improper cleaning. This coating is especially beneficial for individuals who are rougher on their glasses and is highly recommended for children’s eyewear. While it doesn’t make lenses scratch-proof, it does significantly improve durability and helps extend the life of your lenses.
Transition lenses—also known as photochromic lenses—automatically darken when exposed to sunlight and return to clear indoors. They’re a great option for patients who want sun protection without the need to carry a separate pair of prescription sunglasses. Available in both grey and brown tints, transition lenses perform well outdoors and provide UV protection and glare reduction. However, they don’t darken as much inside vehicles due to the UV-blocking properties of most windshields. Because of this, some patients still prefer a dedicated pair of prescription sunglasses for driving. For many, though, transition lenses offer a convenient all-in-one solution for both indoor clarity and outdoor sun protection.
At 512 Eye, we offer a wide selection of both prescription and non-prescription sunglasses to suit your style and vision needs. Prescription sunglasses can be fully customized with your choice of lens color, tint intensity, and added features.
We carry a variety of lens tints—from classic browns and greys to bold mirrored finishes in red, blue, and more. For added performance, polarized lenses are available to reduce glare from flat surfaces, making them ideal for driving, boating, and outdoor sports.
We also offer Oakley Prizm™ lenses, designed with activity-specific contrast enhancement. Prizm lenses are available for golf, fishing, cycling, and other sports—helping you see more clearly and perform your best. For example, Prizm Golf lenses enhance contrast on the green, making it easier to spot the ball and read terrain changes.
Not Sure Which Lenses Are Right for You? We Can Help.If you’re still unsure which lens materials or coatings best suit your needs, visit us at 512 Eye. We carry only high-quality lenses and coatings, and our experienced staff is here to guide you through your options. You can explore samples of different lens coatings in person, so you can feel confident in your choice before you buy.
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