Diabetic macular oedema (DMO, also written DME) is treated first-line with intravitreal anti-VEGF injections — ranibizumab (Lucentis), aflibercept (Eylea) or faricimab (Vabysmo). Treatment starts with a loading course of three to five monthly injections, then maintenance injections spaced by your response on OCT scans. Each injection is a painless few-minute outpatient procedure under anaesthetic drops. At our partner clinics, private self-pay pricing is from around £850 per injection including the drug, with a consultation and OCT scan from £200–£350. Insurance is accepted.
What is diabetic macular oedema?
Diabetic macular oedema is swelling at the macula — the small central part of the retina responsible for sharp, detailed, straight-ahead vision. It is a complication of diabetic retinopathy: persistently raised blood sugar damages the tiny retinal blood vessels, which become leaky. Fluid and protein seep into the macula, thickening it and blurring the vision you use to read, drive and recognise faces.
DMO is one of the leading causes of sight loss in working-age adults across the UK. It can develop at any stage of diabetic retinopathy and often creeps up gradually, which is why regular retinal screening matters. The encouraging news is that modern anti-VEGF treatment is highly effective: it dries the macula, stabilises vision in the large majority of patients and improves vision in many — provided treatment starts before the swelling causes lasting damage.
Symptoms of diabetic macular oedema
- Blurred or hazy central vision — words and faces lose their sharpness
- Colours appear washed out or dimmer than before
- Straight lines look wavy or bent (metamorphopsia)
- A dim or blank patch in the centre of your sight
- Trouble reading, using screens or driving despite up-to-date glasses
- Fluctuating vision that varies with blood sugar control
Noticing these changes? A retinal assessment with an OCT macular scan measures the swelling precisely and confirms whether anti-VEGF treatment is needed.
Book a retinal assessmentAnti-VEGF drug options
The mainstay of DMO treatment is a class of drugs called anti-VEGF agents. VEGF (vascular endothelial growth factor) is the protein that drives the leaky, abnormal blood vessels behind DMO; blocking it lets the macula dry out. All three drugs below are MHRA-licensed in the UK for diabetic macular oedema. Your consultant recommends the most suitable agent based on your OCT findings, treatment history and how your eye responds.
For eyes that respond poorly to anti-VEGF, or where injections are unsuitable, UK-licensed alternatives include steroid implants — the dexamethasone implant (Ozurdex) and the longer-acting fluocinolone acetonide implant (Iluvien) — and focal or grid macular laser for certain leakage patterns. Your consultant will explain which route fits your eye, and treatments are often combined over time. You can read more about the wider anti-VEGF injection service we provide across retinal conditions.
What happens during an anti-VEGF injection
An intravitreal injection is a quick, sterile outpatient procedure. You stay awake, and the eye is fully numbed with anaesthetic drops so you feel pressure rather than pain. Most people are surprised how brief and comfortable it is — the injection itself takes only seconds.
- Anaesthetic and antiseptic drops numb the eye and clean the surface; a dilute iodine solution reduces infection risk.
- A small sterile speculum gently holds the eyelids open so you don't need to worry about blinking.
- The consultant injects the anti-VEGF drug through the white of the eye (the pars plana) into the vitreous cavity, well away from your line of sight — this takes only a few seconds.
- The eye is rinsed and checked, and a brief safety check confirms the eye pressure and blood flow are fine before you leave.
- Treatment is planned as a loading course followed by maintenance, with OCT scans guiding the interval between injections.
Recovery and treatment schedule
There is very little downtime after an intravitreal injection — most patients drive themselves home once vision settles and return to normal activities the next day. DMO treatment is ongoing, however, so it helps to understand the typical course:
Day of injection
Mild grittiness, a small red patch on the white of the eye, or floaters are common and settle within days. Use any prescribed drops as advised.
First 48 hours
Avoid rubbing the eye and swimming. Report any increasing pain, worsening vision or marked redness promptly, as a precaution.
Loading phase
A course of three to five monthly injections builds the initial effect, drying the macula and stabilising or improving vision.
Maintenance phase
Once stable, intervals are extended where possible — treat-and-extend or as-needed dosing — each visit guided by your OCT scan.
Ongoing monitoring
DMO is a long-term condition tied to diabetes control. Regular macular OCT and review protect the vision your treatment has restored.
Keeping to your review schedule is the single most important thing you can do — anti-VEGF works best when the macula is not allowed to re-swell between treatments. Good blood sugar, blood pressure and cholesterol control support the injections and slow the underlying retinopathy.
Anti-VEGF injection cost for DMO
Private DMO treatment is priced per injection because the number you need depends on your eye's response. Our indicative 2026 self-pay pricing includes the licensed drug and the injection procedure:
- Self-pay: from around £850 per injection including drug for ranibizumab or aflibercept; faricimab is similar or slightly higher; premium 8mg and biosimilar options vary.
- Loading & maintenance: a loading course means several injections up front, and ongoing maintenance injections recur — your consultant will estimate a realistic plan at your assessment.
- Consultation & OCT: initial consultation with a macular OCT scan is approximately £200–£350.
- Insurance: recognised by major UK insurers — we handle authorisation where your policy covers retinal injections.
For the diagnostic scan that guides every treatment decision, see our OCT retinal scan cost guide. Where steroid or laser treatment is the better route, see the Iluvien implant and diabetic retinopathy laser pages.