High Index 1.74 Bifocal Lenses

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VS Eyewear is the leader in safety and vision with its range of High Index 1.74 Bifocal Lenses.  These glass lenses were engineered with excellence in mind. They are designed to meet the needs of professionals in various industries.  You can select High Index 1.74 Bifocal Lenses from clear or purchase in a variety of transition lenses and a broad range of polarized and non-polarized sunglass lens tints.

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Description

High Index 1.67 Bifocal lenses

 

A Flat Top 28 (FT-28) bifocal is the most commonly used type of lined bifocal. The “Flat Top” refers to the shape of the near vision segment, which is flat across the top, and “28” indicates the width of the Horizontal line of the bifocal measurement in millimeters.  In the Flat Top 28 Bifocal Glass Lenses, the upper portion of the lens corrects your distance vision. The lower part, or bifocal section, contains the reading section or near vision segment, a horizontal rectangular area with a flat top edge. The reading segment is often positioned slightly below the center of the lens.

When wearers look through the upper portion of the lens, they can focus on objects in the distance. Wearers then can look down and use the near vision segment to read or perform close-up tasks. It offers a clear separation between distance and near vision, making it easy for wearers to identify and use the right part of the lens for their desired focus. However, the visible line can be noticeable to others when looking at the wearer’s glasses.

High Index 1.74 Bifocal Lenses – WHAT THEY ARE AND HOW TO USE THEM

The term “high index” refers the refractive indices of lenses. The refractive lens index measures the lens’s ability bend light. The higher the index, the better the lens will be at correcting vision and bending light.

They are also very powerful. High-index lenses can correct vision problems that are more severe while taking up less space than other eyeglasses.

The higher the refractive index of a lens, the stronger the prescription without needing to add thickness.

What prescription strengths require high-index lenses?

High-index lenses are recommended for eye prescriptions between +/-4.00 to +/-8.00. High-index lenses are recommended for those with prescriptions of +/-4.00 to +/-8.00. We recommend 1.74 lenses for those with prescriptions in between.

High-index lenses are not noticeable by people with low prescription strengths. Your optometrist will be able to determine what is best for your prescription.

WHAT ARE THE ADVANTAGES OF High Index 1.74 Bifocal Lenses?

  • They are thinner, lighter and less noticeable within frames. Unlike thicker lenses which may protrude. Low-index lenses may also enlarge or reduce the size of your eyes. This is less likely to happen with high-index lens. .
  • They are versatile. You can choose from high-index lenses that are single vision or progressive. You can even get light responsive. High-index lenses can be ordered that filters blue light. If you are getting sunglasses, high-index polarized lenses are also available. High-index lenses are a great option for customizing your prescription lenses.
  • These lenses fit into most frames. You can choose from a wide range of frames styles even if your prescription is higher. We recommend selecting a frame which centers your eyes behind the lenses to reduce your lens thickness. This is even more important if your prescription is strong! The larger the frame, the thicker the lenses (regardless of refractive index).
  • They are comfortable. High index lenses will not sit heavy on your nose or ears and will be less likely to slide down compared with thicker lenses.

WHAT ARE THE DISADVANTAGES OF High Index 1.74 Bifocal Lenses?

  • They are not as resistant to impact as other lenses. They’re not the best option for children, or those who play high-contact sports. High-index lenses can be slightly more fragile than other lenses.
  • High-index lenses are more expensive than conventional lenses. Because of their materials and manufacturing processes, they can increase the cost of your eyewear. High-index lenses can cost hundreds of dollars extra. Ordering high-index lenses at VS Eyewear will cost you between $50 and $150.
  • They are more reflective than any other lens. They are more reflective than other lenses. This can cause distractions in bright environments. This can make driving and seeing at night more difficult. Antireflective coating for high index lenses is therefore essential. All of ours are already coated with this coating.

Each high-index lens has its own unique benefits.   Explore them further:

These lenses have a 1.67 index and are a popular choice for people with high to moderate prescriptions. These lenses are thinner, lighter and offer improved comfort and aesthetics. There are many lens options available, including clear, sunglass tints in Polarized Gray or Brown, as well as transition lenses, both Signature and Xtractive. This allows you to customize the eyewear according to your style and functionality. They minimize distortions and offer clear vision. These lenses are a great option for many people because they balance affordability, lens thickness and weight.

These lenses have a 1.74 index and are for people with high prescriptions. These are the thinnest, lightest high index lenses and most comfortable plastic lenses available. Choose the type of lens that best suits your vision and style requirements. You can choose from clear, transitions or sunglass tints. These lenses provide excellent optical performance and minimize aberrations, delivering clear vision for wearers who have strong prescriptions.

VS Eyewear understands that everyone has different visual requirements. We offer a wide range of high index lens replacements to suit your prescription, budget, and preferences. We also offer a full range of high index glass lenses for existing glasses.

 

High Index Chart

Additional information

Weight 16 oz

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