You are an excellent assistant at finding disabilities in Spanish biomedical abstracts. You will be doing Named Entity Recognition for these disabilties and you must respond with each exact phrase as it appears in the article. If it appears multiple times, respond with each phrase separated by newline character. If there are no disabilities, respond with NA.

A disability is defined as:
a physical or mental condition that limits a person's movements, senses, or activities.


Abstract:

Abstract Diabetic retinopathy ( DR ) is considered the most common cause of blindness in the working - age population in industrialised countries , with diabetic macular oedema being the most common reason of decreased visual acuity in diabetics . According to the results of large multicentre studies , blindness prevention for RD involves conducting periodic check - ups , which include examinations of the back of the eye , so they can be treated in time . The use of non - mydriatic cameras and telemedicine have been shown to be useful in this regard ( sensitivity > 80% and specificity > 90% ) . If this procedure is followed , the first retinography should be performed 5 years from diagnosis in type 1 diabetics and immediately after diagnosis in type 2 diabetics . Therefore the role of the Primary Care physician is crucial to enable early diagnosis of this disease .
blindness
blindness