Prescription, Progressive & Zero-Power FL-41 Glasses in India: Lens Options, Coatings and Prices

Quick answer: If you wear glasses, your FL-41 tint should be built into your prescription lens — not clipped on top. Sleepaxa makes FL-41 Light and Dark lenses in zero power, single vision, bifocal and three progressive designs, with high-index 1.67 and 1.74 and prism on request. Every prescription is checked by our optometry team, and every lens carries a 5–6 layer coating stack. Prescription FL-41 glasses start at ₹5,498. Order prescription FL-41 glasses →

Why the tint belongs inside your prescription lens

• No light leaks. Clip-ons and fit-overs leave gaps at the sides and top where unfiltered light gets in.
• One pair, all day. No swapping between specs and tinted glasses every time you walk into a tube-lit room.
• Lighter and clearer. One lens instead of two stacked lenses means less weight and fewer reflections.
• Correct optics. Your optical centres, PD and progressive corridor stay where your optometrist intended.

Sleepaxa FL-41 lens options

FL-41 Dark adds ₹300. Buy any two pairs and save 15%.

The 5–6 layer coating stack on every Sleepaxa FL-41 lens

A tinted lens has a specific problem: light reflecting off the back surface bounces into your eye, and a darker lens makes those reflections more noticeable. That’s why coatings matter more on FL-41 than on a clear lens.

• Anti-reflective coating — front surface. Cuts glare and reflections that other people see, and sharpens contrast.
• Anti-reflective coating — back surface. Stops overhead lights and screens behind you from reflecting into your eye.
• Super-hydrophobic top coat. Water, sweat and smudges bead off, so the lens stays clean longer.
• UV400 protection. Blocks UVA and UVB up to 400 nm on both FL-41 Light and Dark.
• The FL-41 tint itself, applied with Sleepaxa’s proprietary Gradient Engineered Dye Process for an even shade across the lens.

How ordering prescription FL-41 glasses works

1. Choose your frame and tint (FL-41 Light or Dark).
2. Select Prescription Lens and any upgrades (progressive design, high-index, Ultra HD).
3. Share your prescription and pupillary distance (PD) after checkout — a clear photo of your prescription works.
4. Our optometry team checks your prescription and contacts you if anything needs clarifying.
5. Your lenses are made, tinted, fitted and quality-checked in our own optical lab in Surat.
6. Your glasses are shipped with a case and cleaning cloth.

Use a prescription from the last 12 months. If your power has changed or you have had new symptoms, get an eye test first.

Progressive FL-41: what to expect

• Allow 1–2 weeks to adapt, as with any progressive lens.
• If you work long hours on a laptop or monitor, choose wider or extra-wide for a bigger intermediate zone.
• Point your nose at what you want to see and move your head, not just your eyes.
• Tell us your main use (office, driving by day, reading) and our optometrists will suggest the right design.

Why Sleepaxa for prescription FL-41

• Optometrist-led: founded by senior optometrist Suraj Dubey (10+ years, 10,000+ eye tests); clinical advisor Dr. Monica Chaudhry.
• Full range: zero power to bifocal to three progressive designs, high-index and prism — one of the most complete FL-41 prescription ranges in India.
• Measured tints: FL-41 Dark lets through 13.8% at 450 nm and 12.6% at 520 nm, Filter Category 2.
• R&D-backed: our research division Acieon Labs has 7+ Indian patent filings, including granted patents IN 587746 and IN 597482.

Choose your frame and add your prescription →

FAQ

Can I get FL-41 glasses with my power in India?

Yes. Sleepaxa makes FL-41 Light and Dark lenses in your exact prescription — single vision, bifocal, progressive, high-index and prism.

Are progressive FL-41 lenses available?

Yes, in three designs: standard, wider and extra-wide. Wider designs give a bigger zone for computer and office work.

I have a high power. Will the lenses be thick?

Choose high-index 1.67 or 1.74 for thinner, lighter lenses. Our optometrists will suggest the right index for your power and frame.

Can I put FL-41 lenses in my existing frame?

Yes. Our send-your-own-frame service fits FL-41 Light or Dark lenses into your frame, from ₹3,499.

What is the return policy on prescription FL-41 glasses?

Prescription lenses are made to order and cannot be returned or exchanged. Zero-power glasses have a 7-day return or exchange.

Do the coatings change the tint colour?

No. The anti-reflective and hydrophobic layers are designed to work with the FL-41 tint, not to replace it.

Do you offer FL-41 contact lenses?

No. Sleepaxa makes FL-41 spectacle lenses only.

Read next: FL-41 Glasses in India: Complete Guide · Do FL-41 Glasses Really Work?

Sleepaxa eyewear is assistive visual-comfort eyewear, not a medical device. Individual experience varies.