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Eye screening service (DECS)

The Diabetic Eye Complications Screening Service (DECS) offers eye screening to detect sight threatening diabetic retinopathy. Retinopathy results from damage to blood vessels in the eye caused by raised blood glucose levels. Untreated diabetic retinopathy is one of the most common causes of blindness in the working age population. However, if retinopathy is picked up early it can be successfully treated.

Who Is the Service For?

The DECS service is for people with diabetes who are aged 12 years and over and are registered with a GP in Lambeth, Southwark or Lewisham.

Patients are screened at least annually on a call/recall register. If changes are noted some patients may be monitored more closely and asked to attend for screening every 3 or 6 months.

The service is provided daily from Monday to Thursday, and on Friday mornings.

Contacting the Service

The DECS team are based in the Diabetes Department at Guy’s, St Thomas’, Lewisham, and King’s College Hospitals.





Referral infomation and referral or exclusion form (PDF format)

Tel: 020 7188 1979
Email: decsadmin@gstt.nhs.uk
Post: DECS Central Admin
          2nd Floor South Wing, Block B
          St Thomas’ Hospital
          Westminster Bridge Road
          London SE1 7EH

Download more information on DECS, retinopathy and eye screening below:


DECS: First Visit Information (in pdf format)


The NHS National Screening Programme for Diabetic Retinopathy aims to reduce the risk of sight loss among people with diabetes by the prompt identification and effective treatment of sight threatening diabetic retinopathy.


Download information from the National Diabetic Retinopathy Screening Programme below:


Diabetic Retinopathy: The Facts (in pdf format)


Eye Screening for People With Diabetes: The Facts (in pdf format)


Note these files are in Adobe Acrobat pdf format. If you have not installed and configured Adobe Acrobat Reader on your system, a free download is available from Adobe.




Eye problems

Eye problems
Diabetes can cause a range of sight problems, including blurred vision or loss of vision, which without treatment can lead to blindness.

Complications of diabetes

Complications of diabetes
Over time, diabetes can result in a number of complications which occur because of the effects of raised glucose levels on blood vessels.