title: A twin register for eye studies and need for collaboration.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003930:Diabetic Retinopathy / Q000235:genetics; D004200:Diseases in Twins; D005128:Eye Diseases / Q000235:genetics*; D005901:Glaucoma / Q000235:genetics; D006801:Humans; D007223:Infant; D007391:International Cooperation; D008875:Middle Aged; D009216:Myopia / Q000235:genetics; D009316:National Institutes of Health (U.S.); D012042:Registries; D014481:United States; D014861:Washington