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Prescription lenses Ray-Ban RB4165 Justin
A pair made to measure for your Ray-Ban RB4165. Choose the use, finish and prescription; we check your prescription details before making it.
Your prescription, explained simply
Use this guide to recognise each value. If something doesn't match or isn't on your prescription, attach a photo and we will check it before manufacturing.
The right thickness for your prescription
The index indicates how much the material bends light. A higher index allows a thinner lens when the prescription is strong.
Standard CR39 option for low prescriptions at a lower price.
Standard thicknessHigh-index organic material for a thinner lens.
Depending on finishAvailable in clear lenses for strong prescriptions within the supported range.
Clear · 4–6 DClear vision
Optical materials selected to provide natural vision for everyday wear.
Thinner lenses
Higher indexes need less material to correct the same prescription.
Protected finish
The coating available depends on the tint and index chosen.
Specific cut
Each pair is made to the exact shape and lens size of the RB4165.
One process, checked step by step
From the moment you confirm your configuration until we prepare your shipment, every decision is checked so we make the right pair.
Configure
Select lens size, use, index, finish and personalization.
We review
We check your prescription, pupillary distance and that the configuration is consistent.
We make and inspect
We cut the pair, check the result and pack it securely for shipping.
Your prescription doesn't go straight into production
We check the prescription details, the pupillary distance and that the configuration is compatible. If we have any doubt, we contact you before manufacturing.
We validate that the data for both eyes and the choice of index are consistent.
We make the pair for the exact shape and lens size of the RB4165.
Customer service and production control by our specialist team.
Coverage against manufacturing defects and after-sales support.
Install your RB4165 lenses correctly
Follow the method shown in the video for your model and do not force the lenses. If the frame is very stiff or you are unsure, write to us before forcing it.
Everything about this replacement part for the Ray-Ban RB4165
Your Ray-Ban 4165 Justin frame is in perfect condition — only the lenses need replacing.
Our prescription lenses are custom-made to your exact specifications and guaranteed
to fit the 4165 Justin perfectly.
Is this the right lens for your frame?
Check the inside of your temple for the inscription
4165 JUSTIN. Our lenses are available in:
- Heights: 42 mm and 44 mm
- Diameters: 56 mm and 59 mm
- Base curve: 6 — matching Ray-Ban’s original sizing
Lens features
- Material: Lightweight CR39 — optical grade
- UV protection: UV400 — blocks 100% UVA and UVB rays
- Fit: Custom-cut for the Ray-Ban 4165 Justin frame
- Prescription: Single vision and progressive available
3-year guarantee on every lens · Shipped from Spain · 50+ countries
These lenses are not manufactured by Ray-Ban. They are custom prescription
lenses made to fit the Ray-Ban 4165 Justin frame perfectly.

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FAQ
Is the price for one lens or for the pair?
It's for a complete pair made with the data for both eyes.
What if I don't understand some of the data?
Write to us with any questions before buying, or give us the details exactly as they appear on your prescription: we will check the configuration before starting production.
What's the difference between the indexes?
1.50 is the standard option. Higher indexes reduce thickness for strong prescriptions; their availability depends on the finish.
Do they come with a warranty?
Yes, 3 years against manufacturing defects.
Your review of Ray-Ban RB4165 Justin