The retina is the light sensitive tissue that lines the inside or the back of the eye; It is similar to a canvas where images are projected. The light falling on the retina triggers a series of chemical and electrical phenomena that ultimately translate into nerve impulses that are sent to the brain by the optic nerve.
Diabetic Macular Edema
The macula is the region of the retina responsible for providing central vision. With the macula we perform most of our daily activities such as reading, driving, using the computer and watching TV, among others.
In diabetes the most common cause of decreased visual acuity is the presence of diabetic macular edema. In this disease there is swelling of the macula due to the injury of the small vessels of the retina, this diabetes.
To assess these problems may need additional studies such as high-resolution OCT or fluorescein angiography, and thus define the treatment plan.