<prompt> Degree of diabetic retinopathy depends onType of diseaseDuration of diseaseSeverity of diseaseRetinal involvement  <response>: Risk factors for diabetic retinopathy Duration of disease after onset of puberty :- Most important risk factor.Other :- Age of onset before puberty, sex, poor glycemic control, hypertension, smoking, poor renal status, obesity, hyperlipidemia, pregnancy. 