title: Colour discrimination under C and high-pressure Na illumination in normals and patients affected by various diseases.
abstract: Under illumination produced by a high-pressure sodium lamp, colour discrimination, compared to C illumination, is found to be impaired. In particular, young diabetic patients, without signs of retinal involvement, show the expected decrease in total score as age proceeds from 10 to 25 years under C illumination. This is no longer the case under Na illumination.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002244:Carbon; D002648:Child; D003118:Color Perception / Q000528:radiation effects*; D003920:Diabetes Mellitus / Q000503:physiopathology; D003930:Diabetic Retinopathy / Q000503:physiopathology; D004192:Discrimination, Psychological / Q000528:radiation effects; D006801:Humans; D008029:Lighting / Q000379:methods*; D008875:Middle Aged; D011312:Pressure; D012964:Sodium
chemical_list: D002244:Carbon; D012964:Sodium