Skip to product information
Ray-Ban | 0RB4427
1/36
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
  • Ray-Ban | 0RB4427
Ray-Ban | 0RB4427

Ray-Ban | 0RB4427

£146.99
£146.99
Colour: Red Cherry
Size: 49-20-145
Will it fit you? Compare with your current glasses

Look inside the arm of your current glasses for three numbers, like 54□18-145. Enter them below.

A guide based on your current frame. Not sure? Our optometrist is happy to advise.

Transitions Gen S

Our most popular adaptive lens. Transitions Gen S darkens in sunlight and clears indoors — automatically, with no effort on your part. Available in 8 fashion colours.

IndoorsVirtually clear
OutdoorsUp to 90% dark
Fade back3–5 minutes
UV protection100% UV400
Colours8 options
Best forEveryday wear

Darkening behind a car windscreen is limited — see XTRACTIVE if you drive often.

Transitions XTRACTIVE

The performance upgrade. XTRACTIVE lenses go darker than Gen S, activate behind a car windscreen, and work in bright indoor light — ideal if you drive or are light-sensitive.

IndoorsSlight tint (comfort)
OutdoorsUp to 95% dark
DrivingActivates in car
UV protection100% UV400
ColoursGrey, Green, Brown
Best forDrivers & outdoors

Has a very slight tint indoors — this is normal and provides extra comfort in bright environments.

Customise your sunglasses

Choose an option to continue

MAR Anti-Reflection

A multi-layer coating that eliminates surface reflections from your lenses. Light passes through cleanly instead of bouncing back as glare — making your vision sharper and your lenses almost invisible to others.

WITHOUT MAR WITH MAR COATING ✗ Glare · Reflections ✓ Clear · Reflection-free
Night drivingCuts oncoming headlight glare
ScreensReduces monitor reflections
AppearanceLenses look nearly invisible
PhotosNo flash reflections in eyes
ClarityUp to 99% light transmission
IncludesScratch & smudge resistance

Recommended for almost everyone. If you wear your glasses full time, MAR is the single biggest upgrade you can make to your lenses.

Blue Filter Coating

Selectively filters high-energy blue-violet light (380–480nm) emitted by screens, LED lighting and the sun. This is the wavelength range most associated with digital eye strain and disrupted sleep.

LIGHT ENTERING YOUR EYES FILTERED OUT PASSES THROUGH 380–480nm · HEV blue light Linked to strain & sleep disruption Strain → Comfortable
Screen timeReduces fatigue from phones & monitors
SleepLess blue light in evenings
SensitivityHelps light-sensitive eyes
LED lightingFilters harsh artificial light
IncludesMAR anti-reflection layer
Best forOffice & heavy screen users

The Blue Filter coating includes a built-in anti-reflection layer, so you get the benefits of both coatings in one. Lenses have a very slight yellow-green tint which is normal and expected.

Varifocal Lenses

We want to make sure your varifocals are absolutely right for you. Accurate measurements are essential — a tiny error can make varifocals unwearable.

For that reason, we'd love to see you in person or speak with you directly before ordering varifocal lenses.

📧 sales@theeyecentre.com
📍 The Eye Centre, 56 High Street, Leicester, LE1 5YN

Sunglasses as Shown — Please Confirm

You'll receive these sunglasses complete with their original tinted lenses, exactly as displayed in the product photos.

No glazing or prescription fitting is included. If you'd like prescription or clear lenses fitted, please go back and choose another option.

👓

Prescription Outside Our Range

We're sorry — your prescription is outside the range we can currently dispense online.

📧 sales@theeyecentre.com
📍 The Eye Centre, 56 High Street, Leicester, LE1 5YN

Distinctly Modern Ray-Ban 0RB4427

The Ray-Ban KAT is an unisex irregular frame that combines contemporary edge with refined craftsmanship. Built from lightweight injected materials for all-day comfort, this full-rim design features a high bridge fit ideal for those requiring enhanced nose support. Perfect for individuals seeking a statement frame that transcends traditional shape conventions.

Frame colour
red cherry — durable, lightweight, and refined
Full Rim construction
Defined frame edge for a confident, structured profile
Irregular shape
Distinctive silhouette designed to flatter and define
Best for face shape
Oval-Square

Frame dimensions

Glasses frame dimensions Lens width 49mm, bridge 20mm, temple 145mm 49mm lens width 20 bridge 49mm lens width 145mm temple

Specifications

ColourRed Cherry
Best forOval-Square
Frame materialInjected
Rim typeFull Rim
ShapeIrregular
Lens width49mm
FitNarrow
GenderUnisex
Best forOval-Square
Expert Optical Glazing
When ordered with a prescription, your lenses are manufactured and glazed by our specialist optical lab to your exact requirements — verified by our GOC-registered optometrist before dispatch.
Ordering with a prescription?
We review every prescription before manufacturing begins. If we have any questions we will contact you directly. Not sure which lenses to choose? Get in touch and we will guide you.

Same fit, different look

Fits like your 0RB4427

49 lens 20 bridge 145 arm
Exact fitBurberry | 0BE2444U

Burberry

0BE2444U

From £214.99

49-20-145

Same lens and bridge as the 0RB4427 — a different look that fits the same.
Exact fitOakley | 0OX8176 (Spindrift Rx)

Oakley

0OX8176 (Spindrift Rx)

From £136.99

49-20-139
±1mmBurberry | 0BE2382D

Burberry

0BE2382D

From £214.99

49-19-145
±1mmPolo Ralph Lauren | 0PH1221TD

Polo Ralph Lauren

0PH1221TD

£144

50-20-145
±1mmOakley | 0OO9439

Oakley

0OO9439

From £159.99

50-19-140

More from the house of

View all 435 →
Ray-Ban | 0RB2140

0RB2140

From £153.49
Ray-Ban | 0RX8908 (0RX8908)

0RX8908 (0RX8908)

From £215.49
Ray-Ban | 0RX7046 (Erika)

0RX7046 (Erika)

From £118.49
Ray-Ban | 0RBR0505S

0RBR0505S

From £175