Symptoms of MGD include red and/or itchy eyes, dry eyes, feeling grittiness, sometimes blurred vision. Your eyes may feel heavy. Your doctor can determine whether you have this condition. One test she may do is to press the eyelids to release some meibum. A diagnostic tool standardizes the amount of force needed to express meibum from the meibomian glands. The tool makes it easier for your doctor to assess not only whether there is a problem, but the severity.