These processes can prevent light from reaching the retina. OCR provides detailed images of tissues that can be penetrated by light, such as the eye. The proliferative – or severe – forms of retinopathies include the defects identified by newly grown blood vessels, by scar tissue formed within the eye, by closed-off blood vessels that are badly damaged, and by the retina breaking away from its mesh of blood vessels that nourish it retinal detachment. People with very high blood pressure and swelling of the optic nerve require emergency treatment in a hospital. And this is the most common retinopathy. When diabetic retinopathy is mild or moderate, good blood sugar control can usually slow the progression. Side effects of scatter photo coagulation are usually minor. The dip in the retina is the fovea, a region of the macula where vision is normally at its sharpest. Patients need to inform their doctors of any visual effects.
Blindness. If this swelling occurs in the macula area of central vision, sight may be significantly diminished. It is usually possible to know within months whether there is any significant long-term damage to vision.