Diabetes often leads to damage of the blood vessels, especially if the blood sugar levels are not well controlled. Swelling, leaking or blockage of the blood vessels in the eye causes a serious condition known as proliferative diabetic retinopathy.
It is important that people with diabetes should get their eyes checked. You can also find more about the best diabetic retinopathy eye screening in Toronto via drdorioeyecare.com.
The retina is a light-sensitive tissue lining the back of the eye. In your eye, the light rays that pass through the pupil, are focused in the lens, and penetrate to the retina, where they are transformed into signals that are transmitted by the optic nerve to the brain and interpreted as images.
Therefore, it is as essential for your vision, as a processor for a computer. Your retina has multiple delicate blood vessels that deliver oxygen and nutrients to sustain its function.
Elevated blood sugar leads to thinning of the blood vessel walls and clumping of the red blood cells. These two processes lead to blood leakage and vessel obstruction. Retina becomes swollen when the blood leaks from the vessels damaged by diabetes.
When the blood vessels get blocked, retinal cells become deprived of oxygen and nourishment in the area of the blood vessel obstruction. A small specialized area in the center of the retina, called macula, is especially sensitive to the consequences of the blood vessel damage.
Macula is essential for clearly seeing the details of the objects located in front of you. If macula becomes swollen (a condition called macular edema), it causes blurry vision, and an impairment of the ability to recognize faces or read.