National RAAB; Sample size: 2805; Reference: Minderhoud J1, Pawiroredjo JC2, Themen HC2, Bueno de Mesquita-Voigt AM2, Siban MR2, Forster-Pawiroredjo CM2, Limburg H3, van Nispen RM4, Mans DR5, Moll AC4. Blindness and Visual Impairment in the Republic of Suriname. Ophthalmology. 2015 Oct;122(10):2147-9. doi: 10.1016/j.ophtha.2015.04.033. Epub 2015 Jun 12. and Minderhoud J1, Pawiroredjo JC2, Bueno de Mesquita-Voigt AM2, Themen HC2, Siban MR2, Forster-Pawiroredjo CM2, Limburg H3, van Nispen RM4, Mans DR5, Moll AC4. Diabetes and diabetic retinopathy in people aged 50?years and older in the Republic of Suriname. Br J Ophthalmol. 2016 Jun;100(6):814-8. doi: 10.1136/bjophthalmol-2015-307177. Epub 2015 Oct 20.