You might not have symptoms in the early stages of diabetic retinopathy. As the condition progresses, you might develop: 
Spots or dark strings floating in your vision (floaters)
Blurred vision
Fluctuating vision
Dark or empty areas in your vision
Vision loss
 When to see an eye doctor Careful management of your diabetes is the best way to prevent vision loss. If you have diabetes, see your eye doctor for a yearly eye exam with dilation — even if your vision seems fine. Developing diabetes when pregnant (gestational diabetes) or having diabetes before becoming pregnant can increase your risk of diabetic retinopathy. If you're pregnant, your eye doctor might recommend additional eye exams throughout your pregnancy. Contact your eye doctor right away if your vision changes suddenly or becomes blurry, spotty or hazy. More InformationScreening for diabetic macular edema: How often?Spotting symptoms of diabetic macular edema