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Preserve your eyesight

A proven treatment and prevention

The Noctura 400 is a sleep mask that treats diabetic eye disease every night while you sleep.

  • Available online and at opticians 
  • 96% of people saw clinical improvement in an NHS trial
  • Proven efficacy & safety: over 1.7 million hours of patient use
  • Comfortable and easy to use
  • Treats you when you sleep
  • Painless, non-invasive treatment
  • 30-day money-back guarantee


How Noctura 400 helps

Noctura 400 is a treatment for diabetic eye disease, including:

  • Diabetic Retinopathy
  • Diabetic Macular Oedema
  • Diabetic Maculopathy

Diabetes and eye damage

Diabetes can damage blood vessels in the eye, causing them to leak fluid and grow weak new vessels. This can damage the macula, the part of the eye responsible for sharp vision. The Noctura 400 uses light of a specific wavelength to target the eyes at night. This light:

  1. Reduces the need for extra oxygen in the eye (needed in darkness).
  2. Prevents a growth factor (VEGF) from making weak blood vessels.
  3. Slows down diabetic eye disease progression and protects your vision.

The Noctura wavelength is specifically selected to target rod photoreceptors in the retina, which may prevent rod cells from adapting to the dark.

This is designed to reduce the need for the additional oxygen, which would otherwise be needed by the dark-adapted eye. It also reduces the risk of nocturnal retinal hypoxia in the diabetic eye.

Using Noctura 400

  • The Noctura 400 sleep mask should be worn over the eyes during sleep for as long as the person is in darkened conditions, up to 8 hours each night.
  • You can use the mask if you have diabetes, even if you have not yet shown any signs of eye disease.
  • It is a home-based, non-invasive treatment, which can be used earlier or in parallel with the current treatments such as laser or eye injections.

What our customers are saying

We're really proud of the results that Noctura 400 has delivered for people.
Here are just a few of our happy customers:

Listen to Sue's experience

On living with diabetic retinopathy — and how Noctura 400 has helped her

Safe, effective and non-invasive

Noctura 400 is a CE marked, MHRA registered medical device.

It has been evaluated within the NHS and has proven safety and efficacy for the prevention and treatment of diabetic retinopathy and diabetic macular oedema in adults.

Noctura 400 is non invasive, does not disturb sleep and can be used on its own or as an adjunct to current treatments.
  • Comfortable and easy to use
  • Simple, non-invasive treatment


We love hearing about the impact Noctura 400 has had on people’s lives. If you would like to write a review please contact us.
Prevent & treat diabetic eye disease

Get the Noctura 400

Noctura 400 Sleep Mask is a non-pharmacological, non-invasive treatment for diabetic eye disease. If used in the early stages, it may slow down or even stop the condition from worsening. 

Call us on +44 (0) 1740 625 555 for advice or to arrange an appointment with an approved Noctura 400 supplier.

  • Revolutionary treatment
  • Doesn’t affect your sleep

Contact our customer care team

Are you a patient interested in getting Noctura 400 for yourself or a family member?

We’d be happy to hear from you!

Please get in touch for more details or to discuss your requirements.

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