Noctura 400 Logo
£0 0

Cart

No products in the cart.

Contact us

Clinically Evaluated. Proven Results.

Treating Diabetic Eye
Disease While You Sleep.

The Noctura 400 Sleep Mask treats diabetic eye disease every night while you sleep – Saving sight with light
Trustpilot
Subscribe – £79/month
Buy Now – £250
Learn More
One mask delivers 12 weeks of treatment
30-day Money Back Guarantee
CE-marked Medical Device
Free UK Delivery
NEW CUSTOMER OFFER! £30 off for new 'buy now' customers - use code WELCOME30 at checkout

As seen in:

The Telegraph logo
The Guardian logo
Daily Mail logo

Treats the Root Cause

Low level green light reduces the oxygen demand in your retina -
the part of the eye most affected by diabetes.

While You Sleep

Worn at night. Your eyes get the treatment they need while you sleep.

Clinically Proven

Tested in the NHS with 96% of patients seeing improvement in clinical evaluations.

12 Weeks of Treatment

Each mask provides 12 weeks of nightly treatment.

Easy & Convenient

Just simple, non-invasive nightly treatment at home.

What Is the Noctura 400?

The Noctura 400 is a soft, wearable sleep mask used at home and administers a low-level light through your eyelids whilst you sleep. Treating diabetic retinopathy, macular oedema and maculopathy.
  • Suitable for adults with diabetic eye disease
  • Works alongside existing treatments
  • Non-invasive treatment
  • Easy to use, just wear while you sleep
Learn more about how it works

Trusted by Patients.
Backed by Evidence.

96% Clinical Improvement

In an NHS evaluation

2.5+ Million Hours

Of real-world patient use

66% Clinical Repair

Across all stages of diabetic eye disease

10+ Years

Available for over a decade

CE-Marked

Class IIa Medical Device
See all clinical evidence

Watch: How Noctura 400 Works

See how gentle light technology treats diabetic eye disease while you sleep.

What our customers say

"The all clear from the Ophthalmologist allowed me to be prescribed a GLP-1 drug, and that has helped me to improve my management of my diabetes.  According to my CGM sensors, I have gone from about 92% time in range to 100% and my weight has so far dropped 15Kg.  Without the Noctura mask, I would not have been allowed access to this extremely effective new medication."
Mark Tiller
Read more Noctura stories
"Recently, my consultant told me there are no longer any signs of maculopathy at the back of my eyes."
Rowan
Read more Noctura stories
"I was advised that my eyesight had actually improved in both eyes and that I needed to reduce my prescription !!"
Bill Giles
Read more Noctura stories
"Diabetic retinopathy was R2 in both eyes now reduced to R1"
Trevor Drake
Read more Noctura stories
"From the scan results the little swellings which are the macular oedema have virtually disappeared."
Nancy Savage
Read more Noctura stories
"I noticed an improvement in my eyesight straight away. That was in 2019 and I have been using it ever since."
Michelangelo Biasiucci
Read more Noctura stories
"My eye doctor follows me every 3-4 months and while I have needed rare treatment with injections, I have gone 12-24 months in between any treatments. This has been fantastic news as I have avoided any serious progression of retinopathy."
Jacob Chojnacki
Read more Noctura stories
I’m a gardener by profession, so the mask has meant that I can continue working in the job I love. My eyesight has improved over the four years I’ve been using the mask and there’s no need to have injections or lasers in the eyes now.
Paul Baggs
Read more Noctura stories
As a 20+ year type I diabetic, PolyPhotonix has removed my deepest fear of developing retinopathy complications. I’ve been using Noctura 400 for preventative purposes and haven’t slept so relaxed nights ever since!
Alessandro Giuliano
Read more Noctura stories
“Over the moon didn’t come close! No treatment needed, they said! I’m so incredibly grateful.”
Linda Baker
Read more Noctura stories
“I was told that my retinopathy had been reduced nearly 50%”
Patrick McCrosson
Read more Noctura stories
“I don’t have to buy any new spectacles for my short sightedness – I can now see just as well without them!”
John Brown
Middlesbrough, North Yorkshire
Read more Noctura stories
Trustpilot

How It Works – 4 Simple Steps

Order

We'll ask a few brief questions to get you set up.

Receive

Delivered within 5 working days, free of charge.

Wear

Wear it every night
while you sleep.

See Results

Most patients start to see results within 3 to 6 months.
Can be used alongside existing NHS treatments such as laser therapy or injections – always follow your specialist's guidance.

Two Ways to Buy

Best Value

Subscribe – £79/month

  • New mask every 12 weeks
  • Save £13 on every mask
  • Free UK delivery
  • 30-day money-back guarantee on your first mask
Start My Subscription
Terms & Conditions

Buy Now – £250

  • 12 weeks of nightly treatment
  • Non-invasive treatment
  • Free UK delivery
  • 30-day money-back guarantee on your first mask
Order Now
Terms & Conditions

Fast, Free Delivery

Delivered within 5 working days.

30-Day Money Back Guarantee

On your first mask.
Try with confidence.

Secure Checkout

Your payment details
are protected.

Need Help?

Our UK support team is
here to help you.

Frequently Asked Questions

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean

McWay Falls is an 80-foot-tall waterfall on the coast of Big Sur in central California that flows year-round from McWay Creek in Julia Pfeiffer Burns State Park, about 37 miles south of Carmel, into the Pacific Ocean. During high tide, it is a tidefall, a waterfall that empties directly into the ocean
View all FAQs
Managed by WildPress
About
More
Company
Registered Addresses
Manufacturer : PolyPhotonix Medical Ltd, NETPark, Sedgefield, County Durham, TS21 3FF, UK. CRN: 07605634 www.polyphotonix.com

EU Distributor and Importer: Hzimut, C/ Lopez de Aranda, 35, 28027 Madrid

EC-REP: CMC Medical Devices & Drugs S.L, C/Horacio Lengo n18, C.P 29006, Malaga-Spain
© 2026 All rights reserved
Powered by  GDPR Cookie Compliance
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.