They live in a nest ruled by a queen who is helped by smaller female (worker) bumblebees. Spring. The lifecycle begins in spring, when rising temperatures awaken a queen bumblebee that has been hibernating alone in the soil.
The list of signs and symptoms mentioned in various sources for Diabetic Retinopathy includes the 6 symptoms listed below: 1  Blurred vision. 2  Flashes. 3  Floaters. Retinal bleeding.  Vision 1  impairment. People with known cases of long standing diabetes complain of blurring of vision.  more information...Â».
Diabetic retinopathy is caused by changes in the blood vessels of the retina. When these blood vessels are damaged, they may leak blood and grow fragile new vessels. When the nerve cells are damaged, vision is impaired.iabetic retinopathy is caused by changes in the blood vessels of the retina. When these blood vessels are damaged, they may leak blood and grow fragile new vessels. When the nerve cells are damaged, vision is impaired.