Do Diabetics Have Dry Eyes?
Friday, January 28, 2005
Diabetes is associated with a number of ocular complications that can lead to blindness. 47%-67% of diabetic patients develop primary corneal lesions during their lifetime. Persistant dry eye complaints from diabetic individuals indicate a clear role of tear film abnormalities.
Dry eye complaints are associated with both type1 and type2 diabetes. When compared to healthy control groups, a number of studies now show decreased tear film break up time (TBUT), lower Schirmer's test values, increased nitric oxide (NO) concentrations from oxidative stress, squamous metaplasia and goblet cell loss on the ocular surface of the diabetic eye.
Higher levels of nitric oxide are found in the aqueous humour of diabetic patients inducing inflammatory reactions that cause retinopathies, as well as ocular surface cell damage. Dry eye complaints and the disorders of tear film quantity and quality seem relevant to the stages of diabetic retinopathy.
Clinical references available in the Biosyntrx office.