Diabetic retinopathy: screening and monitoring

Diabetes can damage the small blood vessels in the retina. Early changes usually cause no symptoms, which is why regular imaging matters.

How we assess it

Advanced retinal imaging alongside a full eye health examination lets us document the retina in detail and compare it visit by visit. NHS diabetic eye screening remains important and our assessment complements it.

When to seek urgent help

Sudden blurring, new floaters, a shadow across your vision or sudden vision loss need same-day advice via NHS 111, your urgent eye service, or A&E.

Common questions

Does a private eye examination replace NHS diabetic eye screening?

No. It complements NHS diabetic eye screening, which you should continue to attend as invited.

What are the early signs of diabetic retinopathy?

The earliest stages usually cause no noticeable change in sight. Later changes can cause blurred or fluctuating vision, dark patches, floaters or difficulty reading.

What is the Noctura 400 mask?

A non-invasive light mask worn during sleep, intended to reduce the retina's increased oxygen demand during dark adaptation. It may be considered for selected patients as part of a clinician-led pathway.

When is diabetic retinopathy urgent?

Seek urgent help for a sudden increase in floaters, flashing lights, a curtain or shadow across your vision, or sudden sight loss. Do not wait for your next routine screening appointment.

How often should I have my eyes checked with diabetes?

At least once a year alongside NHS screening, and sooner if your vision changes or your diabetes care team advises it.

Book an appointment online or call March 01354 660909 / Chatteris 01354 669252.