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The Lenton & Rusby LR4000 Eyeglasses deliver classic round styling and prescription-ready versatility at a price that won't drain your wallet. Part of Altair Eyewear's "budget-friendly frames" collection, these full-rim acetate glasses prove you don't need to compromise on quality or style when shopping for everyday eyewear.
Round Acetate Frames Built for Daily Wear
The LR4000 features a 49mm round lens shape that softens angular features and adds a retro-inspired touch to your look. The full-rim acetate construction is lightweight yet durable—acetate is a plant-based material known for its hypoallergenic properties and ability to hold rich, consistent color over time. Unlike cheaper injection-molded plastics, acetate frames like these resist fading and maintain their finish with proper care.
Available in three versatile finishes—classic Black (001), translucent Taupe Crystal (272), and warm Tortoise (215)—the LR4000 adapts to different styles and occasions. The 21mm bridge provides a comfortable fit for most nose widths, while the 140mm temples feature subtle Lenton & Rusby branding. At just 49mm across, these frames offer a medium fit that works well for square, rectangular, and heart-shaped faces.
Prescription-Ready for Your Vision Needs
These frames accept single vision, progressive, and bifocal prescription lenses. The round lens shape provides ample vertical height (41mm) for progressive lens corridors, making them a practical choice if you need multifocal correction. The full-rim design securely holds lenses of varying thicknesses, and the frame is compatible with anti-reflective coatings, blue light filtering, and photochromic (Transitions) lens options.
Whether you're updating an old prescription or trying round frames for the first time, the LR4000 offers a low-risk entry point. The acetate material can be professionally adjusted for a custom fit, and the sturdy construction stands up to daily wear. Clean them with lukewarm water and mild soap, store them in a protective case, and avoid leaving them in hot cars—acetate is sensitive to heat but will serve you well for years when treated right.
Product Details
Product DetailsModel
LR LR4000Shape
Gender
Material
Bridge Type
Rim Type
Age Group
Color Details
Color DetailsFrame Color
BlackColor Code
001Color Description
Black
Frame Color
GrayColor Code
272Color Description
Taupe Crystal
Frame Color
TortoiseColor Code
215Color Description
Tortoise
Size Details
Size DetailsSize
4921-140
Size
4921-140
Size
4921-140
I’m not sure how a plastic frame can be bent or maybe warped but that’s what I received
Excellent! Very satisfied with the quality and overall order experience
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Frequently Asked Questions
Are the Lenton & Rusby LR4000 frames prescription-ready?
Yes, the LR4000 frames are fully prescription-ready and compatible with single vision, progressive, and bifocal lenses. The 49mm round lens with 41mm height provides enough vertical space for progressive lens corridors. The full-rim acetate construction securely holds prescription lenses of varying thicknesses, and you can add anti-reflective coatings, blue light filtering, or photochromic (Transitions) options.
What face shapes work best with round eyeglass frames?
Round frames like the LR4000 work especially well for square, rectangular, heart-shaped, and angular face shapes because the curved frame softens sharp facial lines and creates visual balance. The 49mm lens width offers a medium fit that won't overwhelm most face sizes. Round frames can also work for oval faces when properly sized.
How do I clean and care for acetate eyeglass frames?
Clean acetate frames with lukewarm water and a small amount of mild soap, then dry with a microfiber cloth—never paper towels, which can scratch the surface. Avoid acetone, rubbing alcohol, and harsh chemicals that can damage the acetate finish. Store frames in a protective case and keep them away from heat sources like car dashboards, as acetate can warp when exposed to high temperatures.
What size are the Lenton & Rusby LR4000 eyeglasses?
The LR4000 measures 49mm lens width, 21mm bridge width, and 140mm temple length (49-21-140). The lens height is 41mm. This is considered a medium fit suitable for most adult faces. The 21mm bridge provides a comfortable fit for average nose widths, and the round shape creates a classic, retro-inspired look.
What is Lenton & Rusby known for?
Lenton & Rusby is a proprietary brand of Altair Eyewear that markets itself as "budget-friendly frames" (BFFs). The brand creates affordable, quality optical frames for contemporary men and women ages 18-55 who want stylish eyewear without the premium price tag. Frames are made from quality materials like acetate and metal with attention to detail and durability.
Can I use the LR4000 frames for high prescription lenses?
Yes, the full-rim acetate construction of the LR4000 can accommodate higher prescription lenses. For stronger prescriptions, consider high-index lens materials (1.67 or 1.74) to reduce edge thickness and weight. The smaller 49mm lens diameter actually helps minimize lens thickness compared to oversized frames, and the round shape keeps your eyes well-centered for optimal vision.