1 Interchangeable needle kits are exactly what they sound like--a set of knitting needle tips, and a set of cords of varying length that can attach and detach from the tips to create many different combinations of needle sizes and cord lengths.
Poor circulation (blood flow) can make your foot less able to fight infection and to heal. Diabetes causes blood vessels of the foot and leg to narrow and harden. You can control some of the things that cause poor blood flow. Don't smoke; smoking makes arteries harden faster.
Diabetic retinopathy is the result of damage caused by diabetes to the small blood vessels located in the retina. Blood vessels damaged from diabetic retinopathy can cause vision loss: 1  Fluid can leak into the macula, the area of the retina which is responsible for clear central vision.2  In an attempt to improve blood circulation in the retina, new blood vessels may form on its surface.lood vessels damaged from diabetic retinopathy can cause vision loss: 1  Fluid can leak into the macula, the area of the retina which is responsible for clear central vision. 2  In an attempt to improve blood circulation in the retina, new blood vessels may form on its surface.