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Custom prescription Prescription lenses for Ray-Ban RB4378V
RB4378 frame with the chosen lenses

This is how your lenses would look

Illustrative image: colours, shape and engraving may vary slightly in the final result.

Ray-Ban · Prescription

Prescription lenses Ray-Ban RB4378V

A pair made to measure for your Ray-Ban RB4378V. Choose the use, finish and prescription; we check your prescription details before making it.

Complete pair Prescription checked 3-year warranty
$ 48.74 configured price · per pair
Select the lens size52 mm
Select your favorite tint. Any doubts? Polarized lenses eliminate annoying reflections and Photochromic lenses darken in the sun.
All our solid colors offer 85% darkness (Category 3), ideal for sun protection.
Fantasy solid colors have 75% darkness. Gradients range from 85% at the top to 15% at the bottom (Category 3).
All mirrored colors offer 85% darkness (Category 3) for maximum sun protection.
Both colors reach up to 80% darkness outdoors under optimal sun conditions.
We never engrave registered trademarks (logos or names of Ray-Ban, Oakley or other brands).
JPG, PNG, WebP or PDF, up to 10 MB. Your own images or logos only: we do not engrave registered trademarks (logos or names of Ray-Ban, Oakley or other brands).
Note: Locations are shown in front view (as if looking at another person).
Your configurationPrescription lenses RB4378V
$ 48.74 per pair
Model
Ray-Ban RB4378V
Product
Made to measure · prescription checked
On backorder · ships in 3–6 business days
Quantity: 1 Total $ 48.74
Personalized product. We'll review your prescription and compatibility before production. Not returnable except in the case of a manufacturing defect.
Before you enter your details

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.

SPHSphereIndicates nearsightedness (−) or farsightedness (+). Always keep the sign.
CYLCylinderCorrects astigmatism. If it's blank, the axis is usually blank too.
AXISAxisShows the orientation of the astigmatism, between 0° and 180°; it is not a power.
PDPupillary distanceThe distance between your pupils, in millimeters. On this page it's entered as a binocular value.
Material and index

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.

1.50–1.67
ProductOrganic lens
ProductionMade to measure
Contents1 pair
Index1.50

Standard CR39 option for low prescriptions at a lower price.

Standard thickness
Index1.60

High-index organic material for a thinner lens.

Depending on finish
Index1.67

Available in clear lenses for strong prescriptions within the supported range.

Clear · 4–6 D

Clear 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 RB4378V.

From the configurator to your order

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.

1
Your choice

Configure

Select lens size, use, index, finish and personalization.

2
Prescription checked

We review

We check your prescription, pupillary distance and that the configuration is consistent.

3
Our workshop

We make and inspect

We cut the pair, check the result and pack it securely for shipping.

Our workshop · General process
CristalesRepuesto technician checking a lens in the Granada workshop
Real people, our own workshopWe review every prescription before production
Why choose ReplacementLenses

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.

Prescription checked

We validate that the data for both eyes and the choice of index are consistent.

Specific cut

We make the pair for the exact shape and lens size of the RB4378V.

Team in Granada

Customer service and production control by our specialist team.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Meet our team Talk to us
Model-specific guide

Install your RB4378V 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.

Step-by-step videoSpecialist support
More information

Everything about this replacement part for the Ray-Ban RB4378V

Prescription Lenses for Ray-Ban 4378V
Give your Ray-Ban 4378V frames a new life by replacing worn or scratched lenses with fresh prescription optics. These replacement prescription lenses for Ray-Ban 4378V are not manufactured by Ray-Ban. They allow you to keep the iconic style you love while restoring crystal-clear vision, without the expense of buying new frames. Only the prescription lenses are provided, not the frame. Our online configurator lets you select your exact prescription requirements, lens coatings, and tint options, so you can choose lenses for both prescription sunglasses or everyday optical glasses.

Compatibility of Prescription Lenses for Ray-Ban 4378V

Check the inside of your Ray-Ban temples to confirm the model “4378V” before ordering. The code on the inner arm ensures a perfect fit. These square-shaped lenses (height: 45,47 mm, diameter: 59 mm, base curve: 4) are specifically crafted to match Ray-Ban 4378V frames for optimal integration and performance.

Features of Prescription Lenses for Ray-Ban 4378V

  • UV400 protection for eye safety
  • Durable, lightweight CR39 lens material
  • Selectable indices: 1.5, 1.6, 1.67 for your optical needs
  • Impact resistance and secure fit
  • Customizable colors and surface treatments

How to Install Replacement Lenses

Easily replace your old lenses at home or with your optician. Simply remove the old prescription lenses from your Ray-Ban 4378V frames and slot in the new ones for a seamless fit. Follow the included instructions for best results.

Maintenance and Warranty

Clean your lenses using water and a microfiber cloth for longevity and clarity. We offer a 3-year warranty against manufacturing defects (this warranty does not cover scratches caused by normal use).

Prescription lenses for Ray-Ban RB4378V
Real experiences

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We answer your questions

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.

Search by reference

Find your glasses' reference

Look on the inside of one of the temple arms. That's where you'll find the details needed to find the right replacement part.

Inside of a Ray-Ban temple arm showing reference RB2140, color 901, lens size 50, bridge 22 and arm length 150
RB2140Frame model
901Color code
50Lens size
22Bridge width
150Arm length
●

To find lenses: the model and lens size are usually enough. For arms: we also recommend checking the color and length.