Minor Eye Conditions Service (MECS) and Urgent Eyecare Service (UES) is an NHS service provided by opticians to assess and treat both minor and sudden onset eye problems. Patients do not need a referral from a GP. The website has a link to find local participating opticians which patients can then contact directly. Examples of problems that may be suitable include: Red, dry, gritty, painful, inflamed, watery eyes. Flashes, floaters, loss of vision, foreign body in eye, minor eye injuries.