Flat Top 28 (FT-28) Bifocal Lenses

 

Flat Top 28 bifocal lenses, commonly referred to as FT-28, are a specialized type of corrective eyewear designed for individuals who need clear vision at both distance and near ranges. These lenses feature a distinctive flat-top “D”-shaped segment positioned at the bottom of the lens. Measuring 28 mm in width, this segment is dedicated to near-vision tasks, while the remainder of the lens is optimized for distance viewing.

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FT-28 Bifocal Lens Design

The FT-28 design emphasizes clarity, simplicity, and efficiency. Unlike progressive lenses that gradually blend multiple focal powers, Flat Top 28 bifocals include a clearly defined dividing line between the distance and near-vision areas. This distinct separation allows wearers to transition quickly and confidently between visual tasks without searching for a viewing corridor.

The flat-top segment provides a wide, usable reading area, making near-vision tasks comfortable and predictable.

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Who Benefits Most from FT-28 Bifocals?

Flat Top 28 bifocal lenses are particularly well suited for individuals who rely heavily on near vision, including:

• Avid readers
• Office professionals and computer users
• Hobbyists engaged in detailed or close-up work
• Individuals who struggle to adapt to progressive lenses
• Wearers seeking a budget-friendly bifocal option

Because the near-vision segment is easy to locate, FT-28 lenses are often favored by first-time bifocal users or those transitioning away from progressives.

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Durability & Frame Versatility

FT-28 bifocal lenses are crafted from high-quality lens materials designed to withstand everyday wear while maintaining consistent optical clarity. This durability makes them a practical choice for active lifestyles and demanding work environments.

Equally important is their style flexibility. Flat Top 28 lenses can be fitted into a wide range of frame designs—from classic to contemporary—allowing wearers to select eyewear that complements both their visual needs and personal style.

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Eye Health, Comfort & Safety

The clear division between near and distance vision zones helps reduce eye strain, especially during extended periods of close work. By eliminating constant refocusing, FT-28 bifocals can be beneficial for individuals prone to eye fatigue or digital eye strain.

For users in environments where eye protection is essential, FT-28 lenses can also be integrated into protective or safety eyewear, ensuring that visual correction and eye safety work together seamlessly.

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Final Thoughts

Flat Top 28 bifocal lenses strike an excellent balance between functionality, comfort, durability, and cost. They offer a wide and stable near-vision area, quick adaptability, and compatibility with a broad range of frame styles. Whether you are new to bifocals or seeking an alternative to progressive lenses, FT-28 bifocals remain a trusted and effective solution.

At Glass Lens Eyewear, we’re committed to helping you find the right eyewear solution to match your vision needs, lifestyle, and work environment.

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Feature	🟩 Progressive No-Line Lenses	🟦 Bifocal Lenses	🟨 Trifocal Lenses
Visible Lines	❌ None	✔ One visible line	✔ Two visible lines
Vision Zones	Distance • Intermediate • Near	Distance • Near	Distance • Intermediate • Near
Visual Transition	Smooth & gradual	Abrupt	Abrupt
Aesthetic Appearance	Modern & discreet	Noticeable	Very noticeable
Intermediate Vision (Computer)	✔ Excellent	❌ Limited	✔ Defined
Image Jump	❌ Eliminated	✔ Common	✔ Common
Peripheral Vision	Softer focus at edges	Stable	Stable but segmented
Adaptation Time	Short for most wearers	Minimal	Minimal
Customization Level	High (wearer-specific)	Low	Low
Everyday Comfort	⭐⭐⭐⭐⭐	⭐⭐⭐	⭐⭐⭐
Cost	💲💲💲	💲	💲💲
Best For	All-day, all-distance use	Reading + distance	Task-specific needs