Next May 21, Dr. Rafael Simó, head of the research group on http://es.vhir.org/web_vhir/portal1/grup-equip.asp?s=recerca&contentid=186789 Diabetes and Metabolism at the Vall d'Hebron Research Institute (VHIR) will give a plenary lecture at the European Endocrinology Congress (ECE 2018) in Barcelona. Under the title "The retina as a window for exploring the brain in diabetes," Dr. Simón will explain to the attendees how to evaluate the functionality of the retina by means of a simple exploration, microperimetry, can be useful to identify type 2 diabetic patients who present cognitive alterations. Thus, the results obtained with microperimetry are correlated with neuropsychological tests and brain abnormalities characteristic of Alzheimer's disease in imaging tests. Type 2 diabetes mellitus (DM2) and Alzheimer's are two very prevalent diseases that are very clearly associated: type 2 diabetic patients are about twice as likely to develop Alzheimer's as non-diabetic people of the same age. This association is that both diseases share pathogenetic mechanisms. It should be noted that DM2 accelerates the passage from an incipient state of cognitive impairment to an advanced state of dementia. In clinical practice, it is essential to know the cognitive state of patients to identify the complexity of the therapeutic regimen recommended for diabetes. In addition, early diagnosis will make it possible to initiate possible treatments aimed at preventing or delaying dementia.Since diabetic patients should have regular eye examinations for diabetic retinopathy screening, including the practice of microperimetry could have a high social and health impact.