Assertion: diabetic retinopathy's symptom | /r/HasProperty | observed
Facets:
value: depending on the stage
type: OTHER
Source sentences:
text: This is possibly due to the diet and lifestyle of the ancients, or because the clinical symptoms were observed during the advanced stage of the disease.
text: Once symptoms are noticed, they include poorer than normal vision, fluctuating or distorted vision, cloudy vision, dark spots, episodes of temporary blindness, or permanent blindness.
text: Depending on the stage, different symptoms may be observed; therefore, corresponding therapeutic measures are necessary.